Homalotylus insularis Krishnachaitanya and Manickavasagam 2016, sp. nov.
Creators: name: Tirunagaru, Krishnachaitanya
name: Sagadai, Manickavasagam
name: Kumar, Abhinav
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Encyrtidae
Homalotylus
Homalotylus insularis

description: Homalotylus insularis Krishnachaitanya and Manickavasagam, sp. nov.
(Figure 2)
Female
Holotype. Length, 1.47 mm. Body dark brown to black (Figure (2a)). Head, frontovertex with metallic green lustre and silvery white setae, interantennal prominence bluish green, eye with silvery white setae. Antenna with radicle, scape, pedicel and F1 – F3 dark brown, F4 light brown, F5 white, F6 and clava orange. Mesosoma brown with green shine; mesoscutum with dark setae and also with some setae basally dark but apically silvery white; scutellum with brown setae; tegula white in basal half, brown in apical half; fore wing with infuscate band below venation, sub-basally and apically hyaline, hind wing hyaline. Legs dark brown except tarsi of mid leg yellow. Metasoma shiny brown, base of ovipositor sheath white, apex brown, ovipositor brownish yellow.
Head in frontal view broader than high (43:40); in frontal view, eye 2× as high as wide; frontovertex with punctate-reticulate, interantennal prominence, antennal scrobes with imbricate sculpture; mandible with 3 acute teeth. Antenna (Figure (2b)) with scape slender, 8.75× as long as wide; pedicel 2.75× as long as wide; F1, 1.55× as long as wide, slightly longer than other funicle segments and F2 – F5 individually, slightly longer than wide, F6 quadrate; clava obliquely truncated, 2.1× as long as wide. Measurements: head height:width, 40:43; eye height:width, 35:17; frontovertex width 9; POL 2.5; OOL 0; OCL 4; AOL 4; scape length:width, 35:4; pedicel length:width, 11:4; funicle length:width, F1, 7:4.5; F2, 6.5:4.5; F3,6.5:4.7; F4,6.5:5; F5, 6:5; F6, 5.5:5.5; clava length:width, 15:7.
Mesosoma 1.2× as long as wide; mesoscutum 2.2× as wide as long; scutellum 1.2× as wide as long; pronotum and mesoscutum with imbricate sculpture, axillae and scutellum with imbricate-reticulate sculpture. Fore wing (Figure (2c)) 2.7× as long as wide; costal cell 14× as long as wide; marginal vein slightly longer than wide; stigmal vein 1.3× as long as postmarginal vein. Mid tibia 2.5× as long as mid tibial spur; mid basitarsus with 18 pegs and 0.95× as short as mid tibial spur; mid tibial spur serrate. Measurements: mesosoma length:width, 47:39; mesoscutum length:width, 18:39; scutellum length: width, 25:29; forewing length:width, 117:43; costal cell length:width, 56:4; marginal vein length:width, 3:2.5; postmarginal vein length 6; stigma vein length 8; mid tibia length 50; mid basitarsus length 19; mid tibial spur length 20.
Metasoma with posterior margin of T 1 more or less straight; posterior margin of T 2 – T 4 convex; T 5 with posterior margin more or less straight; posterior margin of T 6 concave; syntergum medially, broadly V-shaped; T 2 – T 6 each with an anterior, median incision. Hypopygium extending to apex of gaster; ovipositor (Figure (2d)) exserted and 1.2× as long as mid tibia. Measurements: metasoma length 44; exserted ovipositor length, 22; ovipositor length 60.
Material examined
Holotype, 1 f# (on slide under 4 cover slips) labelled ‘ INDIA: North Andaman, Diglipur (N13. 16° E93.0°), 25.V.2012, Malaise trap, Manickavasagam Sagadai and A. Ramesh Kumar ’ (EDAU, Registration No. Enc /007/2015).
Host
Unknown.
Male
Unknown.
Comments
This species is similar to H. scymnivorus in having the ovipositor exserted and female body dark brown or black, but differs in having ovipositor more than 3× as long as mid basitarsus, scape 8.75× as long as wide; F1 – F3 dark brown, F4 light brown, F5 white, F6 and clava orange (ovipositor less than 3× as long as mid basitarsus, scape 7.3× as long as wide; antenna black, shiny, F5, F6 and clava white in H. scymnivorus).
Etymology
The species epithet is a Latin adjective in reference to its island type locality
description: 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 2375-2378, DOI: 10.1080/00222933.2016.1193650, http://zenodo.org/record/3993056