On a new species of Singhius Takahashi (Aleyrodidae: Homoptera) with a key to Indian species

3 Pages·1992·1.7 MB·

by  R Sundararaj

NEWDESCRIPTIONS 103
References
Francke,O.F.(1976):RedescriptionoiParascorpiopsmon- Vachon, M. (1973): Etude des caracteres utilises pour
tana Banks (Scorpionida. Vaejovidae). Ent. News 87 classerlesfamiliesatlesgenresdeScorpions(Arach-
&
(3 4):75-85. nides), Bull. Mus. natn. Hist. Nat, Paris, 3 ser. no.
Tikader,B.K. &Bastawade,D.B.(1976):Anewspeciesof 140,zool(104):857-958.
scorpion of the genus Scorpiops Peters (Family Vachon, M. (1980): Essai d’une classification sousgeneri-
Vaejovidae) from India. J. Bombay nat. Hist. Soc. que des Scorpions du genre Scorpiops Peters 1861
74(1): 140-144. (Arachnida, Scorpionida, Vaejovidae). Bull. Mus.
Tikader, B.K. & Bastawade, D.B. (1983): Fauna ofIndia : natn.Hist. Nat., Paris, 4ser., 2, sectn. A. no. 1: 143-
Scorpions,Vol.Ill: 1-672. 160.
*
ON A NEW SPECIES OF SINGHIUS TAKAHASHI (ALEYRODIDAE:
HOMOPTERA) WITH A KEY TO INDIAN SPECIES1
R.SUNDARARAJANDB. V.DAVID2
(Withatext-figure)
Takahashi (1932) erectedSinghiusas a sub- dorsum; elliptical, broadest at the first ab-
genus under the genus Dialeurodes for the dominal segment region; found singly and scat-
species Aleyrodes hibisci Kotinsky. In 1978 tered on the under surface of leaves; 0.79-0.95
Mound and Halsey elevated it as a full genus. mmlong and 0.55-0.70 mmwide.
Alexander and David (1990) shifted the species Margin: Regularly crenulate, 20 crenula-
Aleurotuberculatus russellae David and Sub- tions in 0.1 mm; anterior and posterior marginal
ramaniam to Singhius and thereby suggested a setae 15p, and 25\i long respectively. Thoracic
new combination. In the present paper a new and caudal tracheal pores indicated.
species is describedunderthis genus fromIndia. Dorsal surface: Dorsal setae capitate,
A
key to the Indian species of Singhius is cephalic setae 17.5p, long, first abdominal setae
provided. (broken), eighth abdominal setae 5[x long, and
caudal setae on either side ofcaudal pore 37.5p,
KEYTOINDIANSPECIESOFSinghius TAKAHASHI long. Dorsum with sparsely distributed minute
—1. Dorsalsetaeshortandcapitate 2 pores; subdorsum with semicircular markings.
Dorsal setae long and with pointed tips Submarginwith suture-like lines running mesad
hibisci(Kotinsky)
mm mm from margin distinct. Submarginal or subdorsal
2. Pupalcase 1.01-1.06 long0.76-0.81 wide;
marginwith25crenulationsin0.1mm; thoracic setae absent.
trachealporeregionslightlyindicated;entiredorsum Vasiform orifice: Subrectangular, wider
— granulated russellae(David&Subramaniam) than long (30-37.5p, x 45-55fx); operculum
mm mm
Pupalcase0.79-0.95 longand0.55-0.70 wider than long (15-20 x 30-35p) towards
wide;marginwith20crenulationsin0.1 mm;
thoracictracheal poreregiondistinct;subdorsum caudal end constricted at half its length and
onlygranulated morindaesp.nov. somewhat rounded, filling the orifice; lingula
concealed. Caudal tracheal furrow funnel-
Singhiusmorindaesp.nov.(Fig. 1) shaped witha constrictionatthe middle halfand
Pupal case: White with a little wax on at the pore end and with minute irregular mark-
ings. Thoracictracheal furrows not indicated.
AcceptedJune 1991.
2Fredrick Institute of Plant Protection and Toxicology, Ventral surface: Ventral abdominal setae
Padappai601301. 17.5fi long and 32.5p, apart; caudal and thoracic
104 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. 89
Fig. 1.Singhiusmorindaesp. nov.A.Pupalcase,B. Margin,C.Vasiformorifice.
tracheal folds indicated but lackstipples ordots. (David and Subramaniam) by the presence of
Material examined: Holotype. Morinda capitate dorsal setae but differs in shape and by
tinctoria, Vellimalai (Tamil Nadu), 3 Aug. 1987. indication of thoracic tracheal pore region. It
Coll. R. Sundararaj. The holotype is with B.V. also resembles S. hibisci (Kotinsky) in shape
David. and size but differs by capitate nature of dorsal
Paratype: One mounted pupal case on setae.
slide, data same as forholotype, deposited inthe
Acknowledgements
collection of the Systematic Entomology
Laboratory, USDA, Beltsville, Maryland, We thank S. James Fredrick, Chairman and
U.S.A. Dr. Clement Peter, Head, Division of Entomol-
This new species resembles S. russellae ogy, FIPPATforfacilities provided.
NEWDESCRIPTIONS 105
References
Alexander, R.W. & David, B. V. (1990): Revision oftwo World.BritishMuseum(NaturalHistory),JohnWiley
whitefly generaAleuroclava Singh andAleurotuber- andSons.
culatus Takahashi (Homoptera, Aleyrodidae). En- Takahashi,R.(1932):AleyrodidaeofFormosa. Parti.Rep.
tomologicalSeries2:1-13.FIPPAT,Padappai. Dep.Agri. Govt.res.InstFormosa59: 14.
Mound, LA. & Halsey, S.H. (1978): Whiteflies of the
A NEW SPECIES OF LIPARIS RICHARD (ORCHIDACEAE) FROM SIKKIM1
S.Z.Lucksom2
In my recent orchid survey in Bhusuk val- Flowers light greenish-pink, 7-8 mm long.
mm
ley of Sikkim, I could collect many interesting Pedicel 4-4.5 long; the floral bracts small,
orchids. A new species ofLiparis Hook, f, col- cordate with amplexicaul base. Sepals 3, sub-
lectedduringthe exploration, is described. equal, brownish-pink; the dorsal sepal 3.6-4 x 2-3
mm, broader than lateral sepals, cordate,
Liparislydiaii sp.nov.
retroflexed; the lateral sepals 5.2 -5.7 x 0.9 - 1.1
Liparis platyrachis Hook, f., affinis, sed mm, spreading, oblong, obtuse, margin
differt pseudobulbo 1-2 cm longus, coepitosus, recurved. Petals 2, 2.9-3.1 x 0.09-0.1 mm,
ovaideo-cylindricus. Folia 4, graciliter oblong, obtuse, translucent, whitish-pink, mar-
membranacea, altema, ovato-oblonga, 1-2.7 cm gin recurved. Labellum 2-2.5 x 0.8-1 mm, cor-
x 0.4 - 0.9 cm, ad marginem integra, ad super- date, slightly deflexed at the middle, hypochile
mm
ficies undulata. Inflorescentia 8-11.5 cm, ter- with 4 calli. Column about 3 long, winged,
minalibus, subpendula, pedunculus 0.8-2.5 cm 2-lobed. Anther ovate, dorsally dome-shaped,
longus, gracilis, teretus, erectus, cum 2-3 brac- about 0.5 mm long. Pollinia 2, about 0.4 mm
teolis, cordatis, basi amplexicaulibus, 5-6 x 2-3 long, translucent, orange yellow, clavate-oblong.
mm, racemus 8-9 cm longus, teretus, cum 4-14 Type: India: Sikkim, Bhusuk valley, 10
floribus. Sepalum dorsale sepalis lateralibus October 1990. Lucksom (Lucksom 198a
majus, 3.6-4 x 2.6-3 mm, cordato-retroflexum. Holotype: Gangtok, Forest Department Herb).
Labellum 2-2.5 x 0.8-1 mm, cordatum, ad Isotypes (198b, Gangtok, Forest Department
mediumparvumdeflexum. Herb).
Etymology: It is named in memory ofmy
Liparislydiaiisp.nov. late mother who was a great source of inspira-
Epiphytic. Pseudobulb 1-2 cm long, tufted, tion for the study of this important group of
mm
ovoid-cylindric, sheathed, 3.5-6 diam., plants.
broaderatthe baseandslightly taperingtowards Flowers and fruits: October- November.
m
the apex. Leaves 4, 1-2.7 x 0.4-0.9 cm, thinly Altitude: 900 -1200m.
membranous, alternate, ovato-oblong, undulat- Ecology: This species grows on the
ing leafsurface, margin entire. Inflorescence 8- branches of arched shrubs in moist and shady
11.5 cm, sub-pendulous. Peduncle 0.8-2.5 cm places.
long, slender, terete, erect with 2-3 cordate The fresh specimens had light greenish-
amplexicaul base bracteoles 5-6 x 2-3 mm; the pink flowers on sub-pendulous peduncle.
raceme 8-9 cm long, terete, with 4-14 flowers. Leaves coriaceous, or sub-coriaceous,jointed at
AcceptedOctober 1991. the pseudobulb or sheath. These characters are
2DFO M & E (SF/TT), Territorial Circle, Forest ofsection Coriifoliae Rich, ofthe genusLiparis.
Department,Gangtok,Sikkim737 102. The new species is closely allied toLiparis