Description of a new species of Oligosita Haliday
(Hymenoptera: Chalcidoidea: Trichogrammatidae) from India
Mohammad
Hayat 1 & F.R. Khan 2
1,2Department of Zoology, Aligarh Muslim University, Aligarh, Uttar
Pradesh 202002, India
Email: 1 mohd_hayat@rediffmail.com; 2 insectqh11@rediffmail.com
Date
of online publication 26 February 2009
ISSN 0974-7907
(online) | 0974-7893 (print)
Editor: T.C.
Narendran
Manuscript
details:
Ms # o1924
Received 19
January 2008
Finally accepted
25 March 2008
Citation: Hayat, M.
& F.R. Khan (2009). Description of a new species of OligositaHaliday (Hymenoptera: Chalcidoidea: Trichogrammatidae) from India. Journal
of Threatened Taxa 1(2): 117-118.
Copyright: © M. Hayat
& F.R. Khan 2009. Creative Commons Attribution 3.0 Unported License. JoTT
allows unrestricted use of this article in any medium for non-profit purposes,
reproduction and distribution by providing adequate credit to the authors and
the source of publication.
Author Details: Dr. M. Hayat, a Ph.D. and D.Sc. in
Zoology from the Aligarh Muslim University. More than 40 years research
experience on chalcidoid Hymenoptera, mainly Encyrtidae, Aphelinidae,
Mymaridae, Trichogrammatidae and Signiphoridae. Retired in August 2006 as
Professor in Zoology. Working as a Principal Investigator in an ICAR funded
‘Network Project on Insect Biosystematics’ since September 2005.
Dr. F.R. Khan,
Ph.D. in Zoology. Presently working as Research Associate in the ‘Network
Project on Insect Biosystematics’ at the AMU, Department of Zoology centre. He
has to his credit several papers on grasshoppers ecology, and recently on
taxonomy of some chalcidoid families.
Author
contributions: M. Hayat did the main work on identifications
and description of the species. F.R. Khan collected the specimens,
provided help in identification, and prepared the final manuscript on the
computer.
Acknowledgements: The authors are
thankful to the ICAR and Dr. V.V. Ramamurthy, Division of Entomology, IARI, New
Delhi, the National Coordinator of the “Network Project on Insect
Biosystematics” for financial assistance. The authors are also grateful to the authorities of the Aligarh Muslim
University and the Chairman, Department of Zoology, for providing facilities.
Abstract: A new species of the trichogrammatid
genus Oligosita Haliday, O. sakara, sp. nov., is described based
on specimens collected in Uttar Pradesh and Orissa, India.
Keywords: Indian Trichogrammatidae, Oligositanew species.
The trichogrammatid genus Oligosita Haliday in Walker (1851)
contains more than 120 species worldwide. Recently, Hayat (2008 a, b) studied the types of all but one species of Oligositadescribed by Mani (1939) and Yousuf & Shafee (1984, 1988, 1992), and
recorded material pertaining to six species. In all, Hayat (2008b) recognized 17 valid species from India and gave a
key to these species. In this paper, a
new species of the genus is described from specimens collected from Uttar
Pradesh and Orissa.
Oligosita
sakara sp. nov.
(Figs.
1-7)
Material
examined
Holotype: Female (on slide), 1.x.2006, Tikona Mod, Bahraich,
Uttar Pradesh, India, coll. F.R. Khan. Deposited in National Pusa Collection, Division of Entomology, Indian
Agricultural Research Institute, New Delhi (NPCI), Registration no. 13/6/59/1.
Paratypes: 4 Females (on slides), same data as per holotype; 1
Female (on slide), 26.ix.2006, Lakhkhi Purwa, Lakhimpur, Uttar Pradesh, coll.
S.M.A. Badruddin & F.R. Khan; 2 Females (on one slide), 27.ix.2006, Imami
Purwa, Lakhimpur, Uttar Pradesh, coll. S.M.A. Badruddin & F.R. Khan. Two paratypes from Imami Purwa, deposited in
NPCI, No. 13/6/59/2; rest of the paratypes in Insect Collection, Department of
Zoology, Aligarh Muslim University, Aligarh
Additional specimens examined, but not designated as types: (All
specimens are on cards): 2 Females, 26.xi.2007, Benipur, Bhubaneswar, Orissa; 1
Female, 29.xi.2007, Chandpur, Puri, Orissa; 4 Females, 1.xii.2007, Matiapada,
Puri, Orissa; 1 Female, 4.xii.2007, Harrajpur, Khorda, Orissa; 1 Female,
11.xii.2007, Budharaja, Sambalpur, Orissa; 2 Females, 15.xii.2007, Sarbahai,
Jharsuguda, Orissa (All coll. F.R. Khan).
Etymology
The specific name is an arbitrary combination of letters.
Description
Female: Length, 0.51-0.60 mm; Head, pronotum, mesopleuron,
metapleuron, gasteral terga beginning posterior half of third tergite (T III)
to T VII, except white apex of T VII, dark brown; two patches in about anterior
two-thirds of mid lobe of mesoscutum, sides of propodeum, posterior half of T
II and anterior half of T III, brown; ovipositor sheaths dark brown; rest of
body pale yellow (Figs. 6, 7); antenna pale infuscate brown yellow; wings
hyaline with a faint yellow tinge, with slight infuscated spots at base of parastigma and at apex of stigmal
vein; veins yellow-brown; last tarsal segment of all legs brown.
Head: compared to other Indian species, flattened; dorsum
about 5x as broad as long, with vertex at level of posterior ocelli, about 4x
as broad as long (Fig. 2) [These dimension vary in specimens treated with KOH
and mounted in balsam. See Fig. 1]; malar sulcus present; malar space
two-fifths of eye length; head, in front view, 1.3x as broad as high in a
normally preserved specimen; vertex with transversely elongate reticulations,
but from sides of eyes down to near the lower margins of eyes with
longitudinally elongate ridge-like reticulations (Fig. 1); ocellar triangle
with apical angle strongly obtuse; setae as in Figs 1 & 2. Mandibles with two teeth and a truncation.
Maxillary palp unsegmented. Antenna (Figs. 3, 4) with scape slightly longer
than pedicel (5:4.5) and shorter than clava (5:6.5); funicle segment as long as
broad and as long as first segment of clava; clava 2.25 to 2.75x as long as
broad, apical segment with a hook-like bristle (Fig. 4).
Thorax: somewhat flattened; setation and dimensions as in
Fig. 6. Fore wing (Fig. 5) about 3x as long as broad; marginal fringe
0.65x-0.70x of wing width. Hind wing
16.4x as long as broad; marginal fringe 2.8x as long as wing width.
Gaster: depending upon the state of preservation and if
not stretched as in Fig. 6, 1.76x to 1.90x as long as thorax; gasteral tergites
1 and 5 (T I, T V) long; setae on tergite as follows; T I, 1+1; T II, 1+1; T
III, 1+1; T IV, 1+2+1; T V, 1+2+1; TVI 1+2+1; T VII, 4; ovipositor as seen
through the derm, appears to originate from about basal third to half of T I,
and very slightly exserted at apex; ovipositor varies from 1.57x to 1.87x as
long as hind tibia; in holotype, 1.87x as long as hind tibia.
Male: Unknown.
Host: Unknown.
Comments: This new species does not agree with
any of the available descriptions of the species (Nowicki 1935, 1936; Viggiani
1976, 1981; Yousuf & Shafee 1984, 1988, 1992; Lin 1994; Hayat 2008b) of Oligosita.
However, it appears related to O. aesopi Girault (1929) as it runs near
that species in the key to the Australian species given by Viggiani (1976), butO. aesopi has an obscure yellow body, scape about 2x as long as pedicel
and fore wing marginal fringe a little shorter than width of wing. This species was mentioned as ‘Oligositasp. indet. D’ in the key to the Indian species of Oligosita given by
Hayat (2008b).
References
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(privately published)
Hayat, M. (2008a). Taxonomic notes
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and records of some species. Oriental Insects 42: 1-32.
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records. Biosystematica 2: 5-18.
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