Foenatopus andamanensis Binoy, Girish Kumar and Dubey, 2020

Binoy, C., Kumar, P. Girish & Dubey, Anil Kumar, 2020, A new species of Foenatopus Smith (Hymenoptera: Stephanidae) from Andaman Islands, India, Zootaxa 4869 (2), pp. 290-294 : 291-293

Foenatopus andamanensis Binoy, Girish Kumar and Dubey sp. nov.

( Figs 2–12 )

urn:lsid:zoobank.org:act:555E26C4-CE97-4381-90B7-BCD770EC2512

Type material. Holotype ♀, mounted on triangular card, India: Andaman & Nicobar Islands , South Andaman , Port Blair, Ranchi Basti, ZSI residential colony (11°38’46.8”N &. & 92°43’35.8”E, 28 m), 25.iii.2020, Coll. Anil Kumar Dubey ( ZSIK) Registration No. ZSI / WGRC /IR/INV.14728.

Diagnosis. Frons prominently rugose with few carinae converging medially from upper face onto a median straight carina running through centre of face, face medially with parallel sided carinae joining on to the medial one; mesotibia and basitarsus mid leg with yellow patch; subapical part of ovipositor sheath ivory. This species comes close to Indian species F. wynadensis (Sureshan & Narendran, 1997) ( Binoy et al. 2020) in having vertex with three carinae between the lateral ocelli, tridentate hind femur, length of first metasomal tergite shorter than the length of rest of metasomal tergites combined and ovipositor sheath with subapical ivory patch. However, the new species can be distinguished from F. wynadensis in following combination of characters: vein 2-Cu1 of fore wing developed (in F. wynadensis 2-Cu1 of fore wing not developed); and hind coxa finely and strongly annulate, irregular at base (in F. wynadensis hind coxa with rugose transverse striate distally, finer proximally); hind femur ventrally with all teeth black (in F. wynadensis hind femur with basal tooth black, apical teeth ivory coloured). The new species also runs to the Oriental species F. cinctus (Matsumura, 1912) ( Hong et al. 2011) in having vertex with three carinae between the ocelli and vein 2-Cu1 of fore wing developed. It differs from F. cinctus as follows: hind coxa finely and strongly annulate, irregular at base (in F. cinctus hind coxa transversely striate, basal third rugose); hind femur tridentate ventrally (in F. cinctus hind femur bidentate ventrally)and subapical ivory band 1.1× apical dark part (in F. cinctus subapical ivory band 1.5× length of dark apex).

Description. Holotype, ♀ ( Figs 2–12 ). Body length 16.89 mm; ovipositor sheath length 16.65 mm; fore wing length 10.22 mm.

Colour. Black with the following parts as follows: scape and pedicel brown, F1 and F2 slightly yellowish ventrally, rest of the segments brown; frons with short yellow streaks through the inner eye margin and medially, medially not reaching level of anterior coronal tooth ( Fig. 6 ); temple black with ivory streak along lower half of eye, streak becoming narrow apically to brown occiput; lower face with base of mandible yellow, apex black ( Fig. 4 ); mid leg with base of tibia and basitarsus with an ivory-yellow patch; trochanters, base of metafemur and second metasomal tergite ventrally with red colouration ( Fig. 11 ); subapical ivory-white part of ovipositor sheath longer than apical black part ( Fig. 12 ).

Head. Antenna with 38 distinct antennomeres; scape 1.5× pedicel, finely reticulate dorsally; first flagellomere 5.0× as long as wide, and 0.78× as long as second flagellomere ( Fig. 4 ); three anterior coronal teeth large, acute, posterior ones short and wider; frons strongly rugate, trans-striate medially, oblique at coronal area, converging medially onto a carina in middle of face; coronal area with strong rugae approaching the median ocellus; anterior ocellus in a smooth area enclosed by strong rugae ( Fig. 6 ); vertex transversely striate (anterio-medially slightly rugose), three carinae between posterior ocelli and with a medio-longitudinal furrow ( Fig. 5 ); temple non-angulate, slightly convex below eyes, smooth and shiny with scattered setae; occipital carina strong, emarginated.

Mesosoma . Pronotum slender, anteriorly with irregular rugae on dorsal 2/3 rd, rest and laterally with coarse reticulation, posterior raised portion smooth with scattered setae; neck anteriorly deeply emarginated, neck at slightly lower level than middle part of pronotum; anterior half of mesoscutum finely coriaceous with few irregular areola medially, posterior half with a longitudinal grove of areola, with few rugae converging medially onto the mesoscuto-scutellar margin ( Fig. 7 ); scutellum and axillae with very finely alutaceous with scattered punctures, axillae separated from scutellum by a row of deep fovea and from each other by two fovea; propleuron finely reticulate with white setae posteriorly; clothed with white setae anteriorly with few scattered pits, posteriorly with reticulations ( Fig. 8 ); propodeum with medium-sized, circular areola with wide coriaceous, carinate interspaces, inside of foveae imbricate to alutaceous ( Fig. 7 ); fore wing with 2-Cu1 indicated; pterostigma elongate and subparallel-sided, turning acute apically; vein r and vein SR1 obtusely-angled, vein R ends 0.2× length of pterostigma behind level of apex of pterostigma ( Fig. 9 ); hind coxa finely and strongly annulate, irregular at base; hind femur finely reticulate, anteriorly less distinct, ventrally with three large black, acute teeth and a basal tooth like projection, few denticles in between teeth; hind tibia finely reticulate to granulose with scattered pits, as long as hind femur, basal narrow part of hind tibia as long as widened part; hind basitarsus setose ( Fig. 10 ).

Metasoma. First tergite rugose with regular transverse striae, annulate, sparsely setose, 12× as long as its maximum width, 2.2× as long as second tergite and 0.78× as long as remainder of metasoma ( Fig. 11 ); post-petiolar tergites largely smooth; pygidial area distinctly differentiated, pygidial impression moderate with reverse V-shaped; length of ovipositor sheath 0.98× as long as body length, length of subapical whitish band 1.1× length of its dark apex ( Fig. 12 ).

Distribution. India: Andaman Islands ( Fig. 1 ).

Host. Unknown.

Etymology. The species is named after the holotype locality, Andaman Islands.

Figures

FIGURE 1–2. 1. GIS location of type specimen, Foenatopus andamanensis Binoy, Girish Kumar & Dubey sp. nov.; 2. Habitus of holotype, ♀ F. andamanensis Binoy, Girish Kumar & Dubey sp. nov.

FIGURES 3–10. Foenatopus andamanesis Binoy, Girish Kumar & Dubey sp. nov. Holotype ♀. 3. Habitus, lateral view (excluding ovipositor); 4. Head, lateral view; 5. Head, dorsal view; 6. Head, frontal view; 7. Head and mesosoma, dorsal view; 8. Mesosoma, lateral view; 9. Fore wing; 10. Hind leg.

FIGURES 11–12. Foenatopus andamanesis Binoy, Girish Kumar & Dubey sp. nov. Holotype ♀. 11. Metasoma, lateral view; 12. Ovipositor and ovipositor sheath.