Species of Bembidiina (Coleoptera: Carabidae: Bembidiini) from the sandy beaches of Rio Grande do Sul, Brazil

6 Pages·2001·1.6 MB·

by  Roig-Juñent, Sergio

ISSN0373-5680Rev.Soc.Eniomol. Argent.60(1-4):249-254/2001
Species of Bembidiina (Coleoptera: Carabidae: Bembidiini)
from the sandy beaches of Rio Grande do Sul, Brazil
----
ROIG-JUNENT,Sergio* and NortonM. GIANUCA**
*IADIZA,C.C.507"5500Mendoza,Argentina;e-mail:[email protected]
**Dep. de Oceanografia,FundacaoUniversidadeFederaldo RioGrande,FURG, C.Postal474/
RioGrande,RS96201-900/Brazil; e-mail:[email protected]
• ABSTRACT~Speciesof Bernbidiina(Coleoptera:Carabidae: Bernbidiini)arere
corded in Brazil for the firsttime inthis contribution. Two speciesof Bembidiina
have been found in the sandy beaches of southern Brazil, Peryphus (Chilio
peryphus)cassinensis sp. nov. and Notaphus (Notaphus)laticolle (Brulle). These
species were collected only in the supratidal zone ofthe beaches. Peryphus
cassinensisn.sp.isplaced withinthe subgenus ChilioperyphusJeannel,together
with the two other known speciesofthis subgenus. The only specimen exami
ned of NotaphusStephensbelongs to the widespread species N.laticolle.
KEYWOR[)S" Carabidae. Bembidiina. Peryphus cassinensis. Notaphuslaticolle"
Brazil.
• RESUMEN. Especies de Bembidiina (Coleoptera: Carabidae: Bembidiini)
de las playas de Rio Grande doSul, Brasil. En esta contribución seda a co
nocer por prirmera vez la presencia en Brasil de dos especies de Bembidiina
(Coleoptera: Carabidae: Bembidiini). Lasdos especies de Bembidiina encon
tradas en lasplayas arenosas del sur de Brasil son Peryphus (Chilioperyphus)
cassinensis sp. nov. y Notaphus (Notaphus) faticolle (Brulle). Estas especies
fueron recolectadas sóloen el habitat supralitoral de las playas. Peryphus
cassinensis sp. nov. esubicada en el subgenero Chilioperyphus Jeannel, que
poseedos especies conocidas. EIunicoespecimen de Notaphus Stephens re
colectado pertenece a la especie ampliamente distribuida: N.laticolle.
PALABRAS CLAVE. Carabidae. Bembidiina. Peryphus cassinensis. Notaphus
leticolle. Brasil.
INTRODUCTION a thousand species (including most rnernbers of
the subtribe Bembidiina) and it isdivided in se
Fewcarabid beetles of the tribe Bembidiini are veral subgenera or species groups. In contrast,
known forBrazil. Until nowall ofthem belonged European authors follow Jeannel's criteria
to the subtribesTachyna (Erwin, 1974a, b, 1975), (Jeannel, 1941)and havesplit Bembidionin nu
Xystosomina (Erwin, 1973), and Anillina (Cicchino ITlerOUS genera, arranged in six natural groups,
& Roig-Iufient, in press).This isthe first record of called phylogenetic series. In his revision of
the Bembidiina in Brazil. Southern South American species, Jeannel
There are two positions regarding the syste (1962) recognized two ofthese groups ofgene
maries of Bembidiina. North American authors, ra, Notaphus and Peryphus, and added a new
like ~v'\addison0993), consider that this subtribe one, the Plataphus group.
includes five genera (Lindroth, 1963; Erwin & Inthe presentcontribution we citetwospecies
Kavanaugh, -1981).One ofthem, Bernbidion La of Bernbidiina for Brazil that inhabit the suprali
treille, isa large genus probably with IT10re than toral zone of southern beaches ofRio Grande do
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Rev.Soc.Entornol.Argent. 60(1-4),2001
SuI. These species are placed in differentgenera,
following the criterion of European authors.
MATERIAL AND METHODS
Methods,descriptiveterrns,and criteriafor taxo
nomic range follow leannel (1962) and Erwin &
Kavanaugh (1981). Illustrations were made with
cameralucidaadapted toacompoundmicroscope.
The materialsstudied are housed atthe Depar
tarnento de Oceanograffa of the Fundacao Uni
versidade Federal do Rio Grande (FURG), Rio
Grande, RIO Grande do SuI, Brazil and lnstituto
Argentino de Investigaciones de lasZonas Aridas
(IA[)IZA), Mendoza; Argentina.
RESULTS
Peryphus (Chilioperyphus) cassinensis sp. nov
(Figs. 1-3)
Holotype.Male, 17 km south of Cassino Beach,
Rio Grande do Sui, Brazil. 2-X-1994, N. M. Gia
nuca col. (FURG)
Paratvpes,Male, 17 krnsouth ofCassino Beach,
Rio Grande do Sui, Brazil, 2·-X-1994, N.M. Gianu
ca col. (iADIZA); male, 18 krn south of Cassino
Beach, RioGrandedo Sui,Brazil, 1-XI-1993,N. M.
Gianucacol. OADIZA);fernale, 17km south ofCas
sino Beach, Rio Grande do Sui, Brazil, 1-X-1994,
N.N\. Gianucacol. (FURG). Fig. 1.Habitus of Peryphuscassinensisn.sp.Scale bar
Etymology. The species name refers to the ex represents1mm.
tensive beach of Cassino, where the specimens
were.collected. Head. Eye size moderate, longer than wide.
Diagnosis. Head with frons and vertex impunc Head smooth, impunctate, and convex dorsally,
tate, frontal furrows parallel, notextended towards not constricted posterior to eyes; frontal furrows
clypeus; eye longer than wide, size moderate; ter shallow and broad, parallel, not extended ante
minal palpornere of maxillary palpi lessthan 0.20 riorlyontoclypeus;dorsal paraorbital groove pre
times the length of penultirnepalpomere;pronotum sent, with two supraorbital setiferous punctures;
narrow and constricted basally; lateral margin si antennae longand slender, antennomeressubrec
nuate basally; posterior angles notched; elytra uni tangular, scape with one anteroapical seta,anten
formly yellowish (without maculae), hurnerous nornere 2 with apical ring ofsetae, apical halfof
rounded;eightstriae, punctuated, intervalssmooth, antennorneres 3-4 with dense pubescence; 5 to
impunctuate, striae 3 with two foveate setiferous 11 covered with dense, short setae in addition to
punct~res; stria 8 markedly costate in apical half; apical ring:' mandibles prorrect, long; maxillary
hindvvings present;abdominal sternaeachwithone and labial palpi long,exceptterminal palpomeres
pairof pararnedial setaein both sexes. very short, lessthan 0.2 times length of penulti
Description. Size:4.8 mm. Habitus (Fig. 1)with mate palpomere; mentum with a rounded tooth;
head large, pronotum narrow, and elytra proportio glossal sclerite with two setae; paraglossae long.
naiy long. Color:bodyand appendagesyellowpale. Prothorax. Pronotum maximum width at middle:
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ROIG-JUNEf\lT, S.andN.M.GIAl\JUCA. SpeciesofBembidiina(Coleoptera)
2
Figs.2-3.Peryphuscassinensissp.n07). 2,medianlobeleftlateralview: 3,leftpararnere.(Scalebarrepresents0.5mm).
disc moderately convex, constricted basally; in frontofthe coastal dunes, azonewhich isonly
basal margin straight; apical angles right; ante flooded by seawater during extreme storm tide
rior transverse impression absent)' but with a events. Afew insects have adaptedto survivethe
row of bead rufotestaceous; median longitudi seimmersion periods! whileothers activelyavoid
nal impression impressed; laterobasal foveae submersion through temporary displacements to
smooth, shallow; one rnidlateral setiferous ward even upper parts of the beach such asthe
puncture. Prosternal intercoxal process margi primary dunes; Although the Bernbidiina distri
nate. Pterothorax. Elytra rnoderately flat, scutellar bution coversthe dryareasofthe supratidal zone,
stria with five or six small punctures; striae with they are more conspicuous on the borders of
small punctures well impressed on apical re~ freshwater streams that drain marshes and
gion, decreasing in size toward apex. Striae ponds located behind the coastal dunes. They
slightly grooved throughout. Recurrent stria appear to feed upon larvae and adults of other
confluent with the fifth stria. Subapical plyca fossorial species, like the abundant rove beetles
present; intervals flat or very slightly convex; (Staphylinidae) B/edius bonariensis Bernhauer
umbilicateseries ofsetiferous punctures on stria and Bledius rnicrocephalus Fauvel, the heteroce
8. Legs. Protarsomere 1 expanded and with rid Efflagitatus freudei Pacheco, the hydrophiIid
small pads of adhesive hairs ventrally in males; Paracymus rufocinctus Bruch and the pigmy mole
all male protarsomeres dorsally sulcate. Meso cricket (Tridactylidae) Neotridacty/us carbonelli
and metatarsomeres long and slender. Female Gunther. Another predator, cornpeting for the sa
tarsomeres longand slender. Male genitalia (Fig. me food that Periphus cassinensis sp. nov., isthe
2). /\;1€dian lobe moderately narrow, with apex carabid Schizogenius costiceps Steinheil. Toget
spatulate, and basal bulb with most right wall her,all these speciesconstituteasortof burrowing
lacking; ventral margin concave in lateral view; assemblage characteristic of that zone of the
internal sacwithout brush sclerite, flagellum long, beach (Gianuca, 1994; 1997; Vanin et a/., 1995).
not extended beyond the basal bulb (Fig. 2). Left Relationshipswith other Bembidiina, Peryphus
pararnere (Fig.3) stiliform, with three apical setae. cassinensissp. nov. isincluded in the same group
Distribution.The specimens recorded areonly of genera (phylogenetic series sensu leannel.
from the type locality (Fig. 4). 1962) that include the genus Petvphus Stephens
Habitat, Peryphus cessinensis sp. nov. dig its because it lacks angulate humeral margin, hasse
burrows on the supratidal zone of the extensive, tiferous punctures of elytra on stria 3, and basal
gently sloping, fine grained, oceanic beaches of bulb of median lobe without most right wall.
Rio Grande do Sui State, Brazil. The supratidal Whithin this group of genera we included this
zone, or backshore, isthe upperpartof the beach newspecies in the genus Peryphusbecause it has
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Rev.Soc. Entornol. Argent. 60(1-4),2001
l
I
II Notaphus (N.) laticolle
e
Peryphus (C.) cassinensis
Fig. 4.DistributionofPeryphuscassinensissp.nov.andNotaphuslaticollein Brazil.
striae represented by grooves and punctures, and angles right; black species, elytra with a post-
pronotumwith basolateral sinuation and constric medial macula; wingless .
ted basally. . " Peryphus (C'hi/ioperyphus) orregoi
The southamerican species of Peryphus were 1', Prothorax constricted basally; posterior angles
arranged by Jeannel into three subgenera, all of right or notched; redish or yellowish species;
them endemic from southern South America. Ba elytra with or without a postmedial macula:
sedon charactersofthe internal sac(withoutbrush hindwingspresent 2
sclerite and along flagellum notextended beyond 2. Prothorax with posterior angles notched; ye
the basal bulb), Peryphus cassinensis sp. nov. is llowish species; elytra without a postmedial
considered as a rnernber of the subgenus Chi macula .
lioperyphus leanne]. This subgenus has only two ............ Peryphus (C'hilioperyphus) cassinensis
known species, Peryphus mendocinus (Jen 2'. Prothorax with posterior angles right; redish
sen-Haarup) and Peryphus orregoi (Germain) that species; elytra with a postrnedial macula
were redescribed and illustrated by leannel (1962). . Peryphus (Chilioperyphus) mendocinus
Keyto identify Peryphus Notaphus (Notaphus) leticolle(Brulle, 1843)
(Chilioperyphus) species (Fig. 5)
1. Prothorax slightlyconstricted basally; posterior Bembidium laticolle Brulle, 1843: 45 (posterior
252
ROIG-JUNENT,S.andN, M.GIANlJCA.SpeciesofBembidiina(Coleoptera)
homonirnofBembidiumlatico/leDuftschmidt,
1812).
Bembidium servilleiSolier, 1849: 174.
Bernbidiurn montevideanus Gemminger and Ha-
rold, 1868:416.
Bembidiurn lacustreGermain, 1905: 601
Bembidium unieolorGerrnain, 1905: 612.
Bembidiurn uliginosumCsiki, 1928: 163.
Notaphus servillei: Jeannel,'1962: 625.
Noiophus (f\lotaphus) laticolle: Ncgrc. 1973: 296
Remarks. The specimen found in Brazil differs
in coloration from the other studied specimens of
N. laticolle frorn Argentina and ChiIe, which ex
hibit a much darker background colour. Besides
this difference the coloration pattern is the same
(Fig. 5)asweiiasothermorphological characters.
Distribution and habitat. Notaphus /aticolle
is a widespread species that occurs in central
Chile, northern Patagonia, central Argentina,
and Uruguay. Specirnens of N. laticolle are
found in different kinds of habitats, even ha
lophytic ones. The material frorr BraziI was
found 73 km south ofCassino Beach (Fig. 4), Rio
Grandedo Sui, Brazil ('18-1-1985, N. M. Gianuca
col.) (lADIZA).This supralitoral habitatisthe same
inhabited by Peryphus cassinensis sp. nov., and
both species dig their burrows on the supratidal
zone, aswas describe above.
ACKNOWLEDGMEf\lTS
Fig. 5. Habitus of Noiaphus laiicolle. (Scale bar repre
To Nelly Horak (IADIZA, CRICYT) for transla sents1rnm).
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