Hylcalosia livadiae, Belokobylskij, Sergey A., 2015

Belokobylskij, Sergey A., 2015, The genus Hylcalosia Fischer, 1967 (Hymenoptera: Braconidae: Alysiinae) of the Russian Far East, Zootaxa 4040 (5), pp. 530-542 : 535-537

Hylcalosia livadiae sp. nov

( Figs 15–28 )

Type material. Holotype: female, “ Russia: Primorskiy kray, Livadiya, 15 km SW Nakhodka, forest, glades, 2.VIII.2013, Belokobylskij” ( ZISP).

Description. Female. Body length 6.0 mm; fore wing length 5.6 mm.

Head 1.5 × wider than median length, 1.3 × wider than maximum length, 1.4 × wider than mesoscutum. Vertex without median longitudinal furrow. Head behind eyes (dorsal view) weakly widened in anterior half and distinctly roundly narrowed in posterior half. Transverse diameter of eye (dorsal view) 1.3 × length of temple (1.1 × if measured in a straight line). Ocelli arranged in triangle with base 1.25 × longer than its sides, with distinct narrow short and finely crenulate furrow between posterior ocelli. POL 0.75 × OD, 0.25 × OOL. Eyes with short and sparse setae, subround, 1.1 × as high as broad. Face width 1.65 × height of eye, 3.0 × median height of face. Clypeus subtriangular, protruding forward, width of clypeus 1.2 × its median width, 0.3 × width of face. Mandible widened towards subapex, its median length 1.7 × distal width. Teeth of mandible as on Fig. 20 .

Antennae rather slender, almost filiform, more than 49-segmented, more than 1.3 × longer than body (apical segments missing). Scape weakly flattened, 1.25 × longer than its maximum width. First flagellar segment widest, 1.8 × longer than its maximum width, 0.8 × as long as second segment; second segment 3.2 × longer than apical width. Subapical segments 1.8 × longer than their maximum width.

Mesosoma 1.7 × longer than height. Pronotum with deep and wide pronope. Mesoscutum 0.9 × as long as maximum width, with deep wide median longitudinal and sparsely crenulate furrow in posterior 0.7. Notauli deep, wide, crenulate, but smooth posteriorly, developed almost entirely, but shallow posteriorly, fused with median furrow in posterior 0.3. Prescutellar depression deep, densely and coarsely rugose, with low median carina, 0.3 × as long as scutellum. Scutellum weakly convex, without lateral carinae. Metanotum with low median longitudinal carina (dorsal view) not transformed to flange (lateral view). Sternaulus (precoxal sulcus) rather wide, deep, entirely coarsely rugose-reticulate, almost fused anteriorly with lower margin of subalar depression. Subalar depression rather deep, wide, coarsely rugose-reticulate. Metapleural flange wide and long. Propodeal spiracles small and round.

Wings. Fore wing 2.9 × longer than wide. Pterostigma long and narrow, 4.8 × longer than its maximum width. Radial cell not shortened, metacarp 1.25 × longer than pterostigma. Radial vein arising distinctly behind middle of pterostigma, from its 0.7. Inner anterior margin of pterostigma almost 2.0 × longer than its inner posterior margin. Second radial abscissa 2.1 × longer than first abscissa, 0.3 × as long as the curved third abscissa, 0.6 × as long as first radiomedial vein. Second radiomedial cell 3.3 × longer than wide, 1.8 × longer than brachial cell. Recurrent vein weakly postfurcal. Recurrent and basal veins subparallel. Nervulus weakly postfurcal, distance between basal vein and nervulus 0.3 × nervulus length. Brachial cell widened towards apex. Parallel vein arising from posterior 0.4 of apical margin of brachial cell. Hind wing 4.7 × longer than its maximum width. First costal abscissa 0.78 × as long as second abscissa. First abscissa of mediocubital vein 2.0 × longer than second abscissa. Recurrent vein weakly postfurcal.

Legs. Hind femur 4.8 × longer than its maximum width. Hind tarsus 1.1 × longer than hind tibia. Hind basitarsus 0.8 × as long as second-fifth segments combined. Second segment of hind tarsus 0.4 × as long as basitarsus, 1.6 × longer than fifth segment (without pretarsus).

Metasoma weakly widened till apex of second tergite, then weakly narrowed, apical segments not protruding behind third tergite; metasoma 2.1 × longer than its maximum width, 0.9 × as long as head and mesosoma combined. First tergite distinctly and almost linearly widened from base to apex, with wide dorsope, with high and fused in basal 0.4 dorsal carinae. Length of first tergite equal to its apical width; apical width 2.3 × its basal width. Median length of second tergite 0.8 × basal width, 0.7 × its maximum posterior width, almost equal to length of third tergite. Second suture distinct, narrow and crenulate. Third tergite serratulate along apical margin. Second and third tergites with separated laterotergites. Ovipositor sheath slender, 1.25 × longer than metasoma, 1.4 × longer than mesosoma, 0.6 × as long as fore wing.

Sculpture and pubescence. Vertex and temple smooth; frons mainly smooth, rugulose near antennal sockets and densely punctate laterally. Face entirely densely and coarsely rugose-reticulate with striation laterally; clypeus entirely densely and finely reticulate-punctate. Mesoscutum smooth, densely punctate anteriorly, crenulate laterally. Scutellum entirely smooth. Mesopleuron mainly smooth. Propodeum entirely coarsely and densely rugose-areolate, weakly sculptured basally, without transverse striation, with areola unclear delineated by undulate carinae, with distinct carina in mediobasal 0.3. First to third tergites entirely coarsely and densely reticulateareolate and partly with striation; third tergite entirely sculptured. Vertex glabrous medially on wide area, with sparse pale setae only laterally. Mesosoma mainly glabrous, with dense short pale setae anteriorly and laterally and with sparse white setae along notauli and median furrow.

Colour. Head entirely light reddish brown. Prothorax and mesoscutum reddish brown, remaining mesosoma black or partly dark reddish brown. Metasoma entirely black. Antenna dark reddish brown to black, two basal segments yellowish brown. Palpi light reddish brown. Tegula reddish brown. Fore and middle legs brownish yellow; hind leg dark reddish brown to black, apical half of hind femur reddish brown, hind tibia subbasally yellow on short area, third-fifth tarsal segments (except dark pretarsus) yellowish brown. Fore wing faintly infuscate; veins almost black. Pterostigma entirely black.

Male. Unknown.

Distribution. Russia (Primorskiy Territory).

Comparative diagnosis. This new species is very similar to the Eastern Palaearctic H. maetoi Achterberg (Achterberg, 1983) , but differs from it in having the short and sparse setae on eyes (without setae in H. maetoi ), POL 0.75 × OD (1.3 × in H. maetoi ), short temple in dorsal view (long in H. maetoi ), recurrent vein of fore wing weakly postfurcal (distinctly postfurcal in H. maetoi ), propodeum with more or less distinctly delineated areola (without delineated areola in H. maetoi ), metasoma narrow, combined length of second and third tergites 1.5 × their maximum width (wide, their combined length 1.2–1.3 × maximum width in H. maetoi ), hind tibia less widened apically, its maximum width 2.6 × minimum width (more widened, its maximum width 3.0 × minimum width in H. maetoi ).

Figures

FIGURES 15 – 22. Hylcalosia livadiae sp. nov. (female, holotype). 15. Habitus, dorsal view. 16. Basal segments of antenna, lateral view. 17. Head, dorsal view. 18. Head, front view. 19. Head, lateral view. 20. Mandible. 21. Mesosoma, dorsal view. 22. Mesosoma, lateral view.

FIGURES 23 – 28. Hylcalosia livadiae sp. nov. (female, holotype). 23. Fore wing. 24. Hind wing. 25. Median part of hind wing. 26. Propodeum and first metasomal tergite, dorsal view. 27. Apical margin of third metasomal tergite, dorsal view. 28. Metasoma, dorsal view.