Salticidae of the Pacific Islands. III. Distribution of Seven Genera with Descriptions of Nineteen new Species and Two New Genera

41 Pages·1998·41.3 MB·English

by  James W Berry

1998. The Journal ofArachnology 26:149-189
SALTICIDAE OF THE PACIFIC ISLANDS.
III.
DISTRIBUTION OF SEVEN GENERA WITH DESCRIPTIONS
OF NINETEEN NEW SPECIES AND TWO NEW GENERA
James W. Berry: Department of Biological Sciences, Butler University, Indianapolis,
Indiana 46208 USA
Joseph A. Beatty: Department of Zoology, Southern Illinois University, Carbondale,
Illinois 6290U6501 USA
Jerzy Proszyhski: Muzeum i Instytut Zoologii PAN, ul. Wilcza 64 00-679
Warszawa, Poland
ABSTRACT. This is the third paper in a series on the jumping spiders (Araneae, Salticidae) of the
Pacific Islands. It includes the genera Cytaea, Hasarius, Menemerus, Pseudicius, Sobasina, and the new
genera Lakarobius and Xenocytaea. It describes 19 new species: Cytaea carolinensis, C. koronivia, C.
nausori, C. ponapensis, C. rai and C. vitiensis; Lakarobius alboniger; Sobasina aspinosa, S. coriacea, S.
cutleri, S. magna, S. platypoda, S. yapensis and S. paradoxa; Xenocytaea daviesae, X. triramosa, X.
anomala, X. maddisoni and X. zabkai. Pseudicius samoaensis is synonymized with P. kraussi. A key to
the species ofSobasina is provided. Types ofallnew species aredepositedintheBishopMuseum(BPBM)
in Honolulu, Hawaii, except for S. cutleri which is in the American Museum of Natural History in New
York.
This is the third paper in a series on the 1978), is newly recorded from the Caroline
jumping spiders (Araneae, Salticidae) of the Islands, Fiji and Tonga. The genus Pseudicius
Pacific Islands (see Berry, Beatty & Proszyn- is widespread and known from all zoogeo-
ski 1996, 1997) and the last to describe new graphic regions ofthe OldWorld. Two genera,
taxa. The genera included here are Cytaea Hasarius and Menemerus, are each represent-
Keyserling 1882, Hasarius Simon 1871, Me- ed by a single well-known pantropical to near-
nemerus Simon 1868, Pseudicius Simon ly cosmopolitan species. Both have been de-
1885, Sobasina Simon 1898 and the new gen- scribed and illustrated repeatedly (e.g., Davis
era Lakarobius and Xenocytaea. Nineteen & Zabka 1989), and we give only new distri-
new species are described: Cytaea carolinen- bution records.
sis, C. koronivia, C, nausori, C. ponapensis, Somejustification is needed forthe descrip-
C, rai, C. vitiensis, Lakarobius alboniger, So- tion of the new genera Lakarobius and Xeno-
basina aspinosa, S. coriacea, S. cutleri, S. cytaea “in a family which is almost certainly
magna, S, platypoda, S. yapensis and S. par- overloaded with generic synonyms” (Wanless
adoxa', and Xenocytaea anomala, X, davie- 1984) and “given the overabundance of ob-
sae, X. maddisoni, X. triramosa and X. zab- scure genera in salticids” (Maddison 1996).
kai. An exhaustive literature search through about
The newly described species are from the 150 described genera ofsalticids, including all
Caroline Islands (Palau, Ponape, Truk and those from Australia and the whole tropical
Yap), Fiji and Tonga. Almost all of them are Pacific, has not turned up any genus into
known at present from single islands or com- which these species would fit. There seems to
pact groups of islands. The genus Cytaea is be no alternative to describing new generaun-
found from Burma and the Philippines der this circumstance. We have been unable,
through Indonesia and Melanesia to Australia, however, to examine specimens of all of the
Fiji and Samoa. It has not previously been re- described genera. It is possible that some less-
corded from Micronesia. Sobasina, previously er known genus might turn out to be synon-
known only from central Melanesia (Wanless ymous with either Xenocytaea or Lakarobius.
149
150 THE JOURNAL OF ARACHNOLOGY
At first we intended to place these species is described as two longitudinal spine rows,
in Cytaea because oftheir similarity in palpal the outer row given first, e.g., 5-4 indicates 5
structure. However, the palps of Cytaea, as is spines in the outer row and 4 spines in the
often the case with the relatively simple palps inner row, 3 to 5-4 to 6 gives the range of
of many salticids, are not really distinctive. variation in each row, outer row first.
They are rather closely matched in other gen- The holotypes of all new species are de-
era such as Ascyltus Karsch 1878, Canama posited in the Bishop Museum (BPBM) (State
Simon 1903, Euryattus Thorell 1881 and Ser- Museum of Hawaii) in Honolulu, except that
vaea Simon 1887. The epigyna ofmost ofthe of Sobasina cutleri, which is in the AMNH.
species of Xenocytaea (except anomala) are Representatives ofsome ofthe species will be
ofan entirely different form from those in Cy- deposited in the U.S. National Museum
taea. In Cytaea the retromarginal cheliceral (Washington) and the Florida State Collection
tooth is broad, with a crescentic distal margin; of Arthropods (Gainesville). All adult speci-
in Xenocytaea (except anomala) it is narrow mens are paratypes unless specifically exclud-
and bifurcate distally. The cheliceral promar- ed in the text; juveniles are not paratypes.
gin in Cytaea has four to five teeth, in Xeno-
Genus Cytaea Keyserling 1882
cytaea only two. There are differences in the
leg spination between the two genera. For ex- Type species CytaeaalbumaKeyserling 1882. Syn-
ample, Cytaea has 3-3 ventral spines on tibia types from Australia in Zool. Staatsinst. und
Zool. Mus. Hamburg.
I, Xenocytaea has 2-2 (except, again for —
anomala). The color pattern characteristic of Discussion^ This genus contains 30 de-
.
most Cytaea, especially that ofthe male, does scribed species known from the Philippines
not occur in Xenocytaea. The four-cusped re- and southeast Asia to Australia and Samoa. It
tromarginal cheliceral tooth, absence oflateral has not been reported previously from Micro-
spines from metatarsus I and non ant-like nesia. Itresembles the othergenerain Simon’s
form distinguish Lakarobius from all other (1903) Cytaeae and Servaeae in a number of
salticid genera in the entire tropical Pacific respects, but is clearly distinguished from
and Australia. them by the characters given in the diagnosis.
The collections on which this paperis based Simon described the Cytaeae as scarcely dif-
were mostly made by J.W. Berry, E.R. Berry, fering from the Hasarieae except by having
and J.A. Beatty (indicated as JWB, ERB, and more than two promarginal cheliceral teeth,
JAB in the text) in a series ofcollecting trips: but some features ofthe cytaeine leg spination
Marshall Islands (1968, three months; 1969, differ from th—e spination in Hasarius.
three months); Palau (1973, six months); Diagnosis. -Retromargin of chelicera with
Guam, Yap, Truk, Ponape, Taiwan (1973, 1- a two-cusp tooth, the cusps ofequal size, pro-
2 weeks each); Yap (1980, six months); Mar- margin with 3 to 6 (usually 4 to 5) teeth. All
quesas, Tuamotu, Society, Cook and Fiji Is- tibiae, patellae and metatarsi normally with
lands (1987, six months total); and Hawaii lateral spines; rarely metatarsus I lacks them.
(1995, 1997, 1998, three months). Specimens Tibiae each with a dorsal spine near base,
were borrowed from the Bishop Museum sometimes lacking on tibiae I and IL
(BPBM) and the American Museum of Nat- The only similar genera in the entire Pacific
ural History (AMNH) and are occasionallyre- are Ascyltus, Euryattus and Servaea, only the
ferred to. The generic diagnoses are intended first of which occurs in the area considered
to distinguish only among salticid genera re- here. Males of all three ofthese have the tibia
ported from the Pacific Islands (Micronesia of the palp 1.25~4X as long as wide. In Cy-
and Polynesia), excluding the large islands taea both tibia and patella are very short, as
near Asia and Australia, the sub-Antarctic and wide as long or wider. Ascyltus has anterolat-
the eastern Pacific Islands. In the descriptions, eral patches of iridescent scales on the cara-
genera are categorized by size as follows: pace, lacking in Cytaea. The epigynal septum
small, 2-4 mm total length; medium, >4-8 ofServaea is much wider than that ofCytaea.
mm; large, >8-16 mm; and very large, over The epigynal fossa of Euryattus has an inter-
16 mm. All measurements are in millimeters. nal sclerotized pouch, extending forward from
Illustrations of male palpi are of the left palp its anterior margin, that of Cytaea does not.
unless otherwise stated. Ventral leg spination Descriptive notes.—Fissident salticids
BERRY ET AL.—PACEFIC ISLAND SALTICIDS 151
Figures l-4.—Cytaea piscula from American Samoa. 1, General appearance of male; 2, Lateral view
of male; 3, Palp ventrally, with arrow indicating distal notch; 4, Palp laterally.
with cephalothorax high, not widened anteri- Epigynum often with two large oval mem-
orly, cephalic region nearly flat; thoracic branous “windows”; ducts formingloopswhich
groove present; ocular region equal in length usually lie almost entirely posterior to the
to thoracic region or somewhat shorter. Ocular windows. In some species the windows are
quadrangle parallel-sided, wider than long. smaller and round, the external appearance of
Anterior eye row straight or slightly recurved, the epigynum then resembling that ofAscyltus
eyes equidistant; ALE diameter half that of species. A median septum between the win-
AME. Second eye row halfway between first dows varies from very narrow to about % of
and third rows. PLE large, located about their the diameter ofone ofthe windows. Palp with
diameter from the PME. Posterior slope of sinuous reservoir, embolus coiled flat on the
thoracic region gradual. Clypeus and base of anterior part of the bulb ventrally or three-
chelicerae densely hairy. Chelicerae small in dimensionally at the anterior end of the bulb
both sexes, with 3 to 6 (usually 4 or 5) pro- (Figs. 3, 8). A characteristic color pattern is
marginal teeth and one retromarginal tooth common to several species (Figs. 5, 18): C
with two cusps. Sternum ovate, broadly trun- alburna Keyserling 1882, C. frontaligera
cate anteriorly. First coxae separated by the (Thorell 1881), C. mitellata (Thorell 1881), C.
width of the labium or more. Labium longer nimbata (Thorell 1881) and the six new spe-
than wide. Leg formula III^IV-I-IL Tibia I cies described below. A somewhat different
with 3“3 ventral spines, lateral spines present pattern is present in C. flavolineata (Berland
C
on both sides. Metatarsus I with 2-2 ventral 1938) and piscula (L. Koch 1867) (Figs. 1,
spines, lateral spines usually present on both 2). Ventral coloration whitish to whitish-yel-
sides. low.
— —
152 THE JOURNAL OF ARACHNOLOGY
—
Cytaea piscula (L. Koch 1867) Discussion. ^The palps of our specimens
Figs. 1-4, Map 2 agree with that of the type specimen, whose
Attuspisculus L. Koch 1867, p. 224. unpublished drawing was made available by
Cytaeapiscula (L. Koch): Berland 1929, p. 73. Dr. M. Zabka. Embolus coiled flat on ventral
surface of bulb, its basal width less than half
C
width of bulb (Fig. 3). In this it resembles
rai new species and C. vitiensis new species.
It is distinguished from these by the retrola-
teral tibial apophysis of the palp which ex-
tends forward to near middle of bulb and in
ventral view shows a distal notch (Fig. 3).
=
Description. Male: (n 2). Total length
4.5, 4.7; length ofcarapace 1.9, 2.2; maximum
carapace width 1.5, 1.7; eye field length 1.2,
1.3; eye row I width 1.5, 1.5. Legs: Leg for-
mula 4-3-1-2, patella-tibia III=IV. Patella-
=
tibia I length 1.6 {n 1).
—
Material examined. AMERICAN SAMOA:
Tutuila, Fagatogo, 26 limm, 14 July 1973 (JAB).
Distribution.—Samoa.
Cytaea carolinensis new species
Map 2. Distribution ofseven species ofCytaea Figs. 5-12, Map 2
in the Pacific. Cytaea piscula (), Cytaea caroU-
nensis new species (•), Cytaea koronivia new spe- Holotype.—Male holotype from Caroline
cies (), Cytaea nausori new species (a), Cytaea Islands, Palau, Malakal Island, dry tropical
ponapensis new species (), Cytaearainewspecies forest, tree shaking, 14 March 1973, (J.W,
(o), and Cytaea vitiensis new species (). Berry & J.A. Beatty) (BPBM).
BERRY ET AL.—PACIFIC ISLAND SALTICIDS 153
—
Figures 5-12. Cytaea carolinensis new species fromPalau, Caroline Islands. 5, Holotype male, dorsal
appearance; 6, Holotype male, frontal appearance; 7, Holotype male, lateral appearance; 8, Palp ventrally
of holotype, with arrow showing projection of bulb lateral to embolus; 9, Palp laterally; 10, Epigynum
with entrances and grooves blocked by waxy material, with arrow indicating heavily sclerotized insemi-
nation duct; 10a, Waxy plug removed from epigynum; 11, Internal structure of epigynum after removal
of material from the copulatory opening; 12, Left single spermatheca and duct (notejunction ofunscler-
otized and sclerotized parts ofthe duct).
Etymology.—The species is named for the tral surface. The smaller loop of the embolus
Caroline Islands, where it was collected. and anterior projection of the bulb lateral to
Diagnosis.—Differs from most other Cy- embolus distinguish it from ponapensis (Fig.
taea in palpal structure (Figs. 8, 9), but cor- 8). The female is similarto C. ponapensisnew
responds with male ofC. ponapensisnew spe- species and C. rai new species in having the
cies (Fig. 21) by having the embolus forming epigynal fossae longer than wide and the in-
a three-dimensional spiral at the anterior end semination ducts posterior to the fossae. It is
of the bulb, rather than a flat coil on the ven- distinguished by having the fossa margin in-
—
7
154 THE JOURNAL OF ARACHNOLOGY
distinct and the external part of the insemi” belt of dense white setae and scales along
nation duct heavily sclerotized, giving an ap- clypeus, chelicerae yellowish-fawn, with a
pearance of two C’s facing in opposite spot of whitish setae medially. Ventral aspect
directions (Fig.—10). light. Pedipalpal femur and patella white.
Description. Male: {n = 5). Total length Legs: Yellow, tibia and tarsus light fawn with
4.1-5.1 (x = 4.67), length ofcarapace 2.1-2.5 sparse long colorless setae. Femur I without
(x = 2.24), maximum carapace width 1.5-1. dark band. Leg formula 3-1=4-2; patella-tib-
(x = 1.58), eye field length 1.1-1.3 (x = ia III=IV.'Patella-tibia I length 2.0-2.3 (x =
1.23), eye row I width 1.5-1.8 (x = 1.63). 2.10). Epigynum: Elongate oval with two oval
Cephalothorax lightyellow, withblackaround depressions separated by a thin, sclerotized
lateral eyes; abrown semicircular spot on tho- ridge, a circular area anteriorly in each de-
racic region, bordered anteriorly by a light pression, delimited posteriorly by a broad
transverse band and posteriorly by a distinct ridge of funnel-shaped copulatory opening
white band on the posterior slope; a darkband (Figs. 10-12). Copulatory duct not sclerotized
on posterior margin (Fig. 5). Sides of cepha- distally, and leading to a sclerotizedtransverse
lothorax whitish-yellow, with marginal band loop which merges with an oval spermathecal
oflight-brown scales (Fig. 7) and thin, whitish chamber (Fig. 12).
line along the ventral edge. Abdomen light Material examined. CAROLINE ISLANDS:
brown, with indistinct pattern of white and Palau, Malakal, dry tropical forest, tree shaking,
dark spots. Clypeus with an anterior line of 666JA(iBn)c.luRdoincgkhIoslloatnydpee)ast19o,f1M4alMaakralc,hd1r9y73tr(opJiWcaBl
small white scales and darker edge; three forest, elev. 100 ft., curled up leaf, 19,8 March
darker yellow triangles between anterior eyes 1973 (JWB). Rock Island east of Malakal, tree
and the band ofwhite scales. Basal and apical shaking, 19 4inim, 9 Febmary 1973 (JWB). Koror,
surfaces of chelicerae dark brown (Fig. 7), Japanese temple ruins, tree shaking. Id, 14 March
separated by transverse band of white setae. 1973 (JAB & JWB). Koror, scrub forest in vacant
A dark spot apically on prolateral surface of lot, tree shaking. Id, 13 March 1973 (JAB &
pedipalpal femur. Legs: Whitish; a dark band JWB). Koror, in cave entrance. Id, 13 March 1973
along anterior surface of femur I and dark (JAB & JWB). Arakabesan Island, mixed tropical
ventral surface oftibia I and patella I in some Ffoerberstu,areylev1.97530-(J7W0B)ft..,AtrraeekasbheaskainngI,sl2adnd,3dirmymt,ro1p6-
specim-ens. Leg formula 3-4-1-2; patella-tib- ical forest, elev, 374 ft., tree shaking, Id19, 1
ia III IV. Patella-tibia I length 1.55-1.8 (x March 1973 (JWB). ArakabesanIsland,mixedtrop-
= 1.69). Palp: Short and broad, triangular, ical forest, 29,1 March 1973 (JWB). Angaur,road-
embolus located anteriorly and twisted into a side bushes, ldl9, 28 April 1973 (JWB & JAB).
coil, seminal reservoir ducts sinuous, but lim- Babelthuap, Airai, lowland tropical forest, north of
ited to retrolateral half of the bulb; apophysis airstrip. Id limm, 27 March 1973 (JAB & JWB).
of medium length, ventrally appears as a nar- Babelthuap, below forestry headquarters atNekkin,
row plate, rounded apically, laterally hook- mixed tropical forest in open, shaking trees, 4d19
2imm, 3 February 1973 (JWB). Babelthuap, Ngar-
like; tibia shor=t (Figs. 8, 9). = emlengui, in woods, ld29 3imm, 21 April 1973
Female: (n 5). Total length 5.5-6.5 (x (JWB & JAB). Babelthuap, Ngaremlengui, grass
5.93), length of carapace 2.5-2.7 (x= 2.59), field, sweeping, 19 limm, 21 April 1973 (JAB &
maximum carapace width 1.9-2.1 (x — 1.91), JWB). Babelthuap, Airai,treeinfield, 1d19 limm,
eye field length 1.3-1.5 (x = 1.43), eye row 7 May 1973 (JAB & JWB). Babelthuap, Airai, be-
pIrwoipdortthio1n.s7-1r.e9se(mxbl=ing1.8m2)a.leB,odpyaleshawpiethaonudt l1o0wMaSrDcAh s1c9h7o3ol(,JdArBy&troJpWiBca)l.fPoerlesetl,iu,1dmi1x9edlitrmomp,-
ical forest, 4d, 22March 1973 (JWB). Truk, Moen,
distinct contrasts. Cephalothorax yellowish
tree shaking, quarry hill. Id limm, 12 June 1973
with slightly darker yellow eye field, lateral (JAB & JWB).
eyes black-rimmed, with a few colorless —
scales on eye field. Abdomen covered with Distribution. -Known from Truk and the
minute brownish scales and small spots of Palau group in the Caroline Islands.
whitish scales that also make an oval anterior Cytaea koronivia new species
spot; abdomen ventrally white, covered by —Figs. 13-15, Map 2
colorless scales. Frontal aspect light fawn, Holotype. ^WHolotype female fromFiji, Viti
with eyes rimmed dorsally with white scales, Levu, 22.4 km of Suva, 5 May 1980 (J.W.
more conspicuous than in male; a transverse Berry & E.R. Berry) (BPBM).
—
BERRY ET AL.—PACIFIC ISLAND SALTICIDS 155
zynski 1984) but has the copulatory openings
nearer the anterior margin of the epigynum
(Fig. 14). The duct of the epigynum differs
fromthatofother species by almostcomplete-
ly encircling one ofthe round windows before
entering the globular spermatheca (Fig. 15).
Description.—Femrz/e.- {n — 2). Total
length 7.3, 7.6; length of carapace 2.9, 3.1;
maximum carapace width 2.2, 2.5; eye field
length 1.7, 1.7; eye row I width 2.1, 2.2.
Cephalothorax dorsally light brown, with ar-
rowhead-shaped whitish spot just behind fo-
vea; eye field fawn, covered with minute col-
orless scales, limited posteriorly by a row of
brown scales, thoracic region medially with
dark brown and whitish scales, sides and pos-
terior slope yellow with sparse whitish scales.
Black areas around lateral and anterior eyes,
covered with whitish and afew reddish scales.
Abdomen light greyish-yellow with indistinct
pattern of lighter pairs of diagonal spots cov-
ered with colorless scales, and separated by
lines ofslightly darker, brownish scales. Fron-
tal aspect without any contrasting spots, pale
AME
fawn, with area around brown, eyes sur-
rounded with whitish setae, clypeus very low
with whitish setae above chelicerae. Chelic-
erae brownish-yellow; pedipalps with femora
whitish, patella and tibia yellow, tarsus light
brown, all covered with whitish setae. Legs:
Prolateral surfaces of femora I whitish, re-
maining segments yellow to light brown, yel-
low on legs II-IV. Tibia I-II with three lateral
spines on each side, retrolateral spines much
shorter than the others; metatarsi I-II with 2-
2 ventral spines and two lateral spines on each
side; legs III-IV spines long or only slightly
shortened on tibiae. Leg formula 4-1=3-2;
=
patella-tibia III IV. Patella-tibiaIlength 2.2,
2.4. Epigynum: Withtwo circular “windows”,
the ducts forming a circle dorsal to the win-
Figures 13-15.—Holotype female ofCytaea ko-
dows, spermatheca globular (Figs. 14, 15).
ronivia new species from Viti Levu, Fiji. 13, Tibia Male: The male is unknown.
I retrolaterally (note reduction in size of lateral
spines); 14, Epigynum, with arrow indicating cop- WMaterial examined.—-FIJI: Viti Levu, 22.4 km
ulatory opening near anterior margin; 15, Internal of Suva City, forest, sweeping and shaking, 19
structure of epigynum with left spermatheca and (holotype), 5 May 1987 (JWB, ERB). Nausori, Ko-
ducts. roniviaResearch Station, ontreetrunk, 19,19May
1980 (JAB).
Etymology.—The name koronivia is a Distribution.—-Known only from Viti
noun in apposition after the locality where the Levu, Fiji.
first specimen was collected. Cytaea nausori new species
Diagnosis. Epigynal fossae round or Figs. 16-20, Map 2
slightly longer than wide, septum wide. Re- Holotype.—Holotype male from Fiji, Viti
C
sembles subsiliens Kulczynski 1910 (Pros- Levu, Nausori Highlands Forest Preserve,
156 THE JOURNAL OF ARACHNOLOGY
—
Figures 16-20. Cytaea nausori new species from Viti Levu, Fiji. 16, Palp ofholotype ventrally, with
arrowindicating wide coiledbaseofembolus; 17, Palpofholotype laterally; 18, Dorsalpatternofholotype
male cephalothorax; 19, Epigynum; 20, Internal structure of left side ofepigynum, with arrow indicating
duct forming two loops.
Leuve-i"toko Block, elev. 1500 ft., shaking whitish scales anterior to PLE. Eye field light
and hand collecting, 27 May 1987 (J.W. & fawn, PLE encircled with whitish scales ven-
E.R. Berry) (B—PBM). trally and anteriorly, with reddish scales pos-
Etymology. The name is a noun in ap- teriorly and dorsally, PME surrounded with
position after the area where the type speci- reddish scales covering black pigmented area.
men was coll—ected. There is a spot of white scales between PME
Diagnosis. The embolus of the palp is and PLE with three transverse bands across
coiled flat on the bulb, its circular base almost the thoracic region behindthe eyes: a flattened
Vi of the bulb width (Figs. 16, 17). The epig- diamond-shaped upper white band; a median
ynum has two circular windows separated by broad band of dense, blackish-brown scales;
a linear septum (Fig. 19), resembling that of and a lower, marginal row of whitish scales,
C. vitiensis new species from which it differs extending along sides beneath lateral eyes
A
by having the duct forming two loops (Fig. (Fig. 18). Ventral edge of carapace brown.
20) rather than—one. row oflong flattened whitish scales behind an-
Description. Male: {n = 1). Total length terior eyes, and behindjunction ofAME afew
4.3, length of carapace 2.0, maximum cara- orange ones. Abdomen whitish, covered
pace width 1.5, eye field length 1.1, eye row sparsely with small, orangish scales, replaced
I width 1.5. Cephalothorax coveredwith semi- by whitish ones along median line. A few
transparent brownish and colorless scales. sparse dark setae scattered over the abdomen.
There are two transverse marginal spots of Frontal aspect differs from Cytaea carolinen-
—
BERRY ET AL.—PACIFIC ISLAND SALTICIDS 157
sis new species (Fig. 6) by absence of trans= and absence of a projection ofthe bulb lateral
verse white and dark belts. Face light brown, to the embolus (Fig. 21). The three-dimen-
clypeus very low, light brown without con- sional apical coil ofthe embolus (Fig. 21) sep-
trasting scales; chelicerae slender, short, light arates it from C. rai. The female has the mar-
brown, apically yellow; pedipalps greyish-yel- gins of the epigynal fossae distinct and the
low, with tibia and cymbium lightbrown. Pro- anterior portions of the fossae obliquely di-
lateral surface offemur I whitish, with a faint vergent (Fig. 23). The epigynum of C. rai is
darkerring near apical end, with no otherdark larger, has parallel fossae and a widening of
marks. Legs: Femora whitish, with transverse the septum near its middle (Fig. 28), while
darkening apically on femur I, remaining seg- that of C. carolinensis has indistinct fossal
ments yellow, with two indistinct darker margins and “c” shaped fossae (Fig. 10).
brown annuli on tibia I. Leg formula 4-3=1- Description. Male: (n = 4). Total length
2, patella-tibia III=IV. Patella-tibia I length 4.3-4.8 (x = 4.54), length of carapace 2.1-
I.5. Palp: Embolus coiled flat on bulb with a 2.2 (x = 2.15), maximum carapace width 1.4-
large circular base, retrolateral apophysis a 1.5 (x = 1.46), eye field length 1.1-1.3 (x =
long slightly curved bluntly rounded triangle 1.21), eye row I width 1.4-1.5 (x = 1.45).
(Figs. 16, 17). Cephalothorax light yellow, almost bare, with
=
Female: (n 1). Total length 5.9, length of whitish scales on black anterior edge and
carapace 2.1, maximum carapace width 1.8, around lateral eyes, spots of brown scales be-
eye field length 1.3, eye row I width 1.6. hind PLE. Two transverse spots of brown
Whitish, with cephalothorax and abdomen scales at mid-length of posterior thoracic
covered with minute orange scales, with no slope, forming a senucircular dark band, bro-
contrasting pattern; lack of scales on lower ken in the middle; a thin dark ventral line
sides of cephalothorax and abdomen leaves along the edge of carapace, covered with
these areas whitish. Lateral eyes, onblackpig- brown scales. Abdomen whitish above, later-
mented spots, are surrounded with whitish ally brown with white stripe; lower sides whit-
scales; a row of elongate colorless or orange ish; spinnerets light greyish-yellow. Frontal
scales above eyes. Frontal aspect pale yellow- aspect whitish with edge of eye field dark,
ish without contrasting marks. Legs: Patella- covered by sparse whitish scales, clypeus light
tibia I length 1.7; uniformly whitish, with tib- fawn; anterior eyes surrounded by long col-
iae-tarsi yellow. Leg formula 4-3-1-2, with orless setae; clypeus almost bare. Chelicerae
patella-tibia III=IV. Epigynum: As described whitish-yellow, with transverse dark brown
in diagnosis (Figs. 19, 20). band in proximal Vs; a brown spot on distal
— end of pedipalpal femur and an irregular dark
Material examined. FIJI: Viti Levu, Nausori grey line along ventro-prolateral edge of fe-
Highlands Forest Preserve, Leuve-i-toko Block,
e2l7evM.a1y501098ft7.,(shJaWkBing&, EpiRcBk)i.ng, 13 (holotype) 19, mIVurw1h.itLiesghs:wiLtehgssIomyeellsoewgimseh-nwthsityee.llLoewg.sNIIo-
— darkenings on legs other than a dark line
Distribution. Known only from Viti along anterior surface offemur 1. Leg formula
Levu in Fiji. 4-3-1-2, patella-tibia III=IV. Patella-tibia I
length 1.5-1.7 (x = 1.61). Palps: Pedipalps
Cytaea ponapensis new species
light yellow, with brownish-yellow dorsal sur-
—Figs. 21-25, Map 2 face of tibia and cymbium. Embolus located
Holotype. Male holotype from the Caro- antero-ventrally, makes IV2 coil; tibial apoph-
line Islands, Ponape, E. ofKolonia, breadfruit/ ysis of medium length, ventrally appears as a
ivory nut forest. 8 June 1973 (J.W. Berry & narrow plate, rounded apically, laterally
J.A. Beatty) (B—PBM). tongue-like; tibia short (Figs. 21, 22).
Etymology. Named after the island of Female: (n = 5). Total length 5.6-6.4 (x =
Ponape (Pohnpei) in the Caroline Islands 6.02), length of carapace 2.4-2.7 (x = 2.54),
where the spec—imens were collected. maximum carapace width 1.8-1.9 (x = 1.86),
Diagnosis. Resembles C. carolinensis eye field length 1.30-1.35 (x = 1.31), eye row
new species in genitalia and C. rai new spe- I width 1.65-1.75 (x = 1.68). Body shape and
cies in color pattern. The male differs from C. proportions resembling male, pale colored,
carolinensis by the wider coil of the embolus without contrasts, except dark rims around
158 THE JOURNAL OF ARACHNOLOGY
—
Figures 21-25. Cytaeaponapensis new species from Ponape, Caroline Islands. 21, Palp of holotype
ventrally, with arrow indicating plate-like tibial apophysis; 22, Palp ofholotype laterally; 23, Epigynum,
with arrow showing fossae distinct with obliquely divergent anterior portions; 24, Internal structure of
epigynum, ventral view; 25, Spermatheca, dorsal view, left side.
AME
and lateral eyes. Cephalothorax yellow- spermatheca. The spermatheca turns laterally,
ish with eye field whitish and with yellowish- then medially, to an oval, terminal chamber.
grey scales on thoracic region. Abdomen That structure resembles closely internal
light, covered uniformly with light yellowish- structures ofepigynum in Cytaea rai new spe-
grey scales. Frontal aspect whitish, anterior cies from Yap, and a little less closely Cytaea
eyes surrounded with dense long white scales; caroiinensis new species from Palau.
clypeus very low; chelicerae, pedipalps and
—
leg I whitish to whitish-yellow. Legs: Whitish. Material examined. CAROLINE ISLANDS:
Leg formula 4-3-1-2, patella-tibia III—IV. Ponape, Kolonia, roadside near CliffRainbow Ho-
Patella-tibia I length 2.0-2.2 (x = 2.07). Epig- tel, 49,3 June 1973 (JWB & JAB). Palm forest E
ynum: (Figs. 23-25). With two large oval fos- of Kolonia, elev. 200 ft., 19 3imm, 5 June 1973
sae, surrounded by thin sclerotized rim; (JWB & JAB). Nett Municipality, Nan Pil, about
anterior part further depressed and also thinly 1500 ft., tree shaking, 3319 limm, 6 June 1973
dark rimmed. These deeper depressions form (JWB & JAB). E of Kolonia, breadfruit-ivory nut
the entrance to a large chamber-like anterior p&alJmABf)o.resSt,WhoafndSeckoellreectSicnhgo,o2l,3,s8haJkuennef1r9o7m3b(usJhWeBs
part of copulatory duct, which runs semicir- on roadside bank, 1319, 10 June 1973 (JWB &
cularly, narrowing, around anteriorhalfofepig-
JAB).
ynum. At the posterior end of the fossa the —
copulatory ducts pass through short, non- Distribution. Known only from Ponape,
sclerotized passage into a narrow sclerotized Caroline Islands.