Homalotylus montanus Krishnachaitanya and Manickavasagam 2016, sp. nov
| Main Authors: | Tirunagaru, Krishnachaitanya, Sagadai, Manickavasagam, Kumar, Abhinav |
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| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2016
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4328599 |
Daftar Isi:
- Homalotylus montanus Krishnachaitanya and Manickavasagam, sp. nov. (Figure 3) Female Holotype. Length, 2.1 mm. Body dark brown with metallic violet reflections (Figure (3a)). Head dark with metallic greenish blue reflections, ocelli transparent; eyes with silvery white setae. Antenna with radicle, scape, pedicel and F1 – F3 dark black; F4 ventrally light brown, dorsally white; F5 – F6 and clava white. Mesosoma dark with greenish-blue reflections on mesoscutum; pronotum, axillae and scutellum with dark setae, mesoscutum with dark setae and also setae with dark base and silvery white apices; tegula in basal half white, apical half dark brown to black. Fore wing with infuscate band below venation, sub-basally and apically hyaline; hind wing hyaline; legs dark brown, except mid tarsi 1 – 4 segments and mid tibial spur white. Metasoma dark brown, ovipositor brownish yellow. Head in frontal view slightly longer than wide (55:51); in frontal view, eye 1.85× as high as wide; head with imbricate sculpture; mandible with 3 acute teeth. Antenna (Figure (3b)) with scape slender, 6.5× as long as wide; pedicel 2.4× as long as wide; funicle width gradually increasing, F1 1.5× as long as wide, longer than F2 – F6 individually, F6 quadrate; clava obliquely truncate, 2.25× as long as wide. Measurements: head height:width, 55:51; eye height:width, 39:21; frontovertex width 9; POL 3.5; OOL 0.5; OCL 4; AOL 7; scape length:width, 39:6; pedicel length:width, 12:5; funicle length:width, F1, 7.5:5; F2, 6:5; F3, 6:5.2; F4, 6:5.5; F5, 6:5.8; F6, 6:6; clava length:width, 18:8. Mesosoma 1.3× as long as wide; mesoscutum 1.2× as wide as long; scutellum 1.1× as wide as long. Pronotum and mesoscutum with imbricate, axillae and scutellum with punctate-reticulate sculpture. Fore wing (Figure (3c)) 2.8× as long as wide; costal cell 14× as long as wide; marginal vein as long as wide; stigmal vein 1.2× as long as postmarginal vein. Mid tibia 1.6× as long as mid tibial spur; mid tibial spur 1× as long as mid basitarsus; mid tibial spur serrate; mid basitarsus with 23 pegs. Measurements: mesosoma length:width, 60:45; mesoscutum length:width, 27:45; scutellum length:width, 30:33; forewing length:width, 164:58; costal cell length:width, 70:5; marginal vein length: width, 3:3; postmarginal vein length 11; stigmal vein length 13; mid tibia length 45; mid basitarsus length 26; mid tibial spur length 28. Metasoma with posterior margin of T 1 more or less straight; posterior margin of T 2 – T 5 convex; T 6 with posterior margin concave; syntergum medially, broadly V-shaped. T 2 – T 4 each with an anterior, median incision. Hypopygium extending to apex of gaster; ovipositor (Figure (3d)) exserted, 2× as long as mid tibia. Measurements: metasoma length 80; exserted ovipositor length 28; ovipositor length 90. Material examined Holotype, f# (on slide under 4 cover slips) labelled ‘ INDIA: Tamil Nadu, Salem, Yercaud, (N11 48.84, E078 12), 08.iii.2014, YPT, Krishnachaitanya, T. and S. Palanivel ’ (EDAU, Registration No. Enc /008/2015). Host Unknown. Male Unknown. Comments This species is similar to H. agarwali in having the ovipositor exserted, antennal scape less than 8× as long as wide, not constricted at middle, and hind tarsus dark brown, but differs from it in having ovipositor 2× as long as mid tibia; pedicel 2.4× as long as wide; F1 – F3 dark black; F4 dorsally white, ventrally light brown; F5 – F6 and clava white; (ovipositor 1.03× as long as mid tibia; pedicel 2.16× as long as wide; F1 dark brown, F2 dark brown but paler than F1; F3 – F6 and clava white in H. agarwali). Etymology The species name is a Latin adjective in reference to the hilly terrain of the type locality.
- Published as part of Tirunagaru, Krishnachaitanya, Sagadai, Manickavasagam & Kumar, Abhinav, 2016, Five new species of Homalotylus Mayr (Hymenoptera: Encyrtidae) - from India with a key to Indian species, pp. 2369-2387 in Journal of Natural History 50 on pages 2378-2380, DOI: 10.1080/00222933.2016.1193650, http://zenodo.org/record/3993056