Neoheterospilus (Neoheterospilus) yemenus, Belokobylskij, 2020

Belokobylskij, S. A., 2020, Two new species of the genus Neoheterospilus Belokobylskij, 2006 (Hymenoptera: Braconidae: Doryctinae) from Yemen, Zootaxa 4853 (4), pp. 591-600 : 595-599

Neoheterospilus (Neoheterospilus) yemenus sp. nov.

Figs 17–31

Type material. Holotype: female, “ Yemen (5700), Ar Rujum , 9.iv–5.vi.2001, Mal. trap, A. v. Harten, RMNH’02” (Leiden).

Description. Female. Body length 2.6 mm; fore wing length 2.1 mm.

Head ( Figs 18–20 ) width 1.6 × its median length. Occipital carina medio-dorsally not curved. Head behind eyes (dorsal view) distinctly and roundly narrowed. Transverse diameter of eye 1.6 × longer than temple (dorsal view). Ocelli arranged in triangle with base 1.1 × its sides. POL almost equal to Od, 0.4 × OOL. Eye 1.2 × as high as broad. Malar space 0.25 × eye height, 0.7 × basal width of mandible. Face width 0.9 × eye height and 1.5 × height of face and clypeus combined. Width of hypoclypeal depression 1.7 × distance from edge of depression to eye, 0.6 × width of face. Hypostomal flange rather narrow. Mandible medium size. Maxillary palpi about as long as head height.

Antenna ( Figs 21, 22 ) filiform, slender, 21 antennomeres, almost as long as body. Scapus 1.4 × longer than its maximum width. First flagellomere 4.3 × longer than its apical width, 1.1 × longer than second flagellomere. Penultimate flagellomere 3.2 × longer than wide, 0.6 × as long as first flagellomere, 0.85 × as long as apical flagellomere; the latter acuminate apically, but without spine.

Mesosoma ( Figs 24, 25 ) 1.9 × longer than high. Mesoscutum (dorsal view) 0.75 × as long as wide. Median lobe of mesoscutum weakly convex anteriorly. Prescutellar depression smooth, with high median carina, 0.4 × as long as the weakly convex scutellum. Sternaulus running along anterior 0.6 of lower part of mesopleuron, deep, distinctly crenulate; posterior to deep sternaulus present very shallow, narrow, and longitudinally striate furrow reaching to posterior margin of mesopleuron.

Wings ( Figs 27, 28 ). Fore wing about 3.5 × longer than wide. Metacarp (1-R1) 1.35 × longer than pterostigma. Second radial abscissa (3-SR) 0.9 × as long as first abscissa (r), 0.23 × as long as third abscissa (SR1), 0.45 × as long as trace of first radiomedial vein (2-SR). First abscissa of medial vein (1-SR+M) curved. Discoidal (discal) cell 1.5 × longer than wide. Distance between basal vein (1-M) and nervulus (cu-a) 1.2 × nervulus (cu-a) length. Hind wing 4.7 × longer than wide. Second costal abscissa (1-SC+R) absent. First abscissa of mediocubital vein (M+CU) almost as long as second abscissa (1-M). Recurrent vein (m-cu) distinctly antefurcal, unsclerotised, evenly curved towards apex.

Legs (Fig, 30). Hind femur 4.2 × longer than wide. Hind tarsus 0.9 × as long as hind tibia. Hind tibia rather slender. Second segment of hind tarsus 0.6 × as long as basitarsus, almost as long as fifth segment (without pretarsus).

Metasoma ( Figs 26 , 29, 30 ) 1.1 × longer than head and mesosoma combined. First tergite distinctly and almost linearly widened toward apex, its length 1.1 × apical width; apical width 2.2 × basal width. Basal area of second tergite almost unclear, delineated by very shallow and smoothed depression, situated along most part of basal margin of tergite; apical area weakly constricted medially, its median length 0.4 × length of remainder of tergite. Median length of second tergite 0.9 × its basal width, 1.9 × length of third tergite. Ovipositor sheath weakly and almost regularly widened apically ( Fig. 31 ), 0.7 × as long as metasoma, almost as long as mesosoma, 0.5 × as long as fore wing. Ovipositor rather slender, its apex as in Fig. 23 .

Sculpture and pubescence. Head almost entirely smooth. Mesoscutum smooth, partly only very finely coriaceous, with distinct convergent carinae in medio-posterior half and fine rugosity between carinae. Scutellum and mesopleuron mostly smooth. Metapleuron almost smooth in anterior 0.3, coarse reticulate-rugose in posterior 0.7. Basolateral areas of propodeum not distinctly delineated by carinae, almost smooth; remainder most part of propodeum coarsely and densely rugose-reticulate; areola practically not delineated by carinae, unclear; basomedian carina short. Hind coxa and femur smooth. First metasomal tergite almost entirely, distinctly densely longitudinally striate, with rugulosity between striae, dorsal carinae rather distinct, almost complete and mostly weakly convergent but curvedly divergent medially. Second tergite distinctly and densely striate almost entirely, smooth in very narrow basal area; apical area smooth. Remaining tergites entirely smooth. Furrows and suture of second tergite densely crenulate. Vertex almost entirely with rather sparse and long semi-erect white setae directed forwards. Mesoscutum with rather long, semi-erect, relatively dense white setae arranged widely along notauli and in single line marginally, remainder of mesoscutum glabrous. Mesopleuron mostly glabrous. Hind tibia with rather short semi-erect and dense white setae, their length 0.7–0.9 × maximum width of tibia. Ovipositor sheath with short, rather dense and semi-erect pale setae.

Colour. Head, mesosoma and first metasomal tergite dark reddish-brown to reddish-brown; remaining part of metasoma yellowish-brown, with dark medial spots. Antennae dark brown, four to five basal flagellomeres light reddish-brown to pale brown. Palpi yellow. Legs entirely yellow. Ovipositor sheath brown. Fore wing very faintly infuscate. Pterostigma brown, pale brown on its outer margin.

Male unknown.

Comparative diagnosis. This new species is similar to N. subtropicalis Belokobylskij, 2006 from South-East Asia, but differs from it in having the hypoclypeal depression 1.7 × wider than distance from edge of depression to eye (1.2–1.3 × in N. subtropicalis ), metacarp (1-R1) 1.35 × longer than pterostigma (1.1–1.2 × in N. subtropicalis ), recurrent vein (m-cu) in hind wing distinctly antefurcal (interstitial in N. subtropicalis ), hind femur slender, 4.2 × longer than maximum width (wide, 3.2–3.5 × in N. subtropicalis ), suture between second and third tergite distinctly crenulate (almost smooth in N. subtropicalis ), mesoscutum smooth (finely granulate-coriaceous in N. subtropicalis ), length of first metasomal tergite 1.1 × its apical width (1.30–1.55 × in N. subtropicalis ), body mainly dark reddishbrown to reddish-brown, metasoma mainly yellowish-brown (body brownish-yellow or yellow in N. subtropicalis ).

Etymology. From the name of country, when holotype of new species was collected.

Distribution. Yemen.

Figures

FIGURES 17–26. Neoheterospilus (Neoheterospilus) yemenus sp. nov. (female, holotype). 17. Body, lateral view. 18. Head, front view. 19. Head, dorsal view. 20. Head, lateral view. 21. Basal antennomeres 22. Apical antennomeres. 23. Ovipositor, apical half. 24. Mesosoma, dorsal view. 25. Mesosoma, lateral view. 26. Propodeum and first to third metasomal tergites, dorsal view.

FIGURES 27–31. Neoheterospilus (Neoheterospilus) yemenus sp. nov. (female, holotype). 27. Fore wing. 28. Hind wing. 29. Metasoma, dorsal view. 30. Metasoma, lateral view. 31. Ovipositor and sheaths.