Aleiodes coriaceus van Achterberg & Shaw, 2020

van Achterberg, Cornelis, Shaw, Mark R. & Quicke, Donald L. J., 2020, Revision of the western Palaearctic species of Aleiodes Wesmael (Hymenoptera, Braconidae, Rogadinae). Part 2: Revision of the A. apicalis group, ZooKeys 919, pp. 1-259 : 1

Aleiodes coriaceus van Achterberg & Shaw sp. nov. Figs 178-179 , 180-191 , 192-195

Type material.

Holotype, ♀ (NMS), " Sweden: Hr, Sveg, Duybergshammaren, 17.vii.2004, N. Ryholm, NMSZ 2004.167", "MRS Aleiodes DNA 377", "COI worked". Paratypes: 1 ♂ (NMS), same label data as holotype; 1 ♀ (RMNH), "Sweden: Ås. Lilla, Vammasj. Window trap on Betula F2, 8, vii.2003, J. Hilszczanski", "MRS Aleiodes DNA 311", "COI worked".

Molecular data.

MRS311 (Sweden), MRS377 (Sweden).

Biology.

Unknown. The available specimens were collected in July, and it is almost certainly univoltine, but we have not seen reared material.

Diagnosis.

Maximum width of hypoclypeal depression approx. 0.4 × minimum width of face (Fig. 186 ); OOL of ♀ 0.9-1.1 × as long as diameter of posterior ocellus (Fig. 187 ), and rugulose-coriaceous or only coriaceous; ventral margin of clypeus rather thin or blunt and not protruding forwards (Fig. 188 ); vertex mainly coriaceous and rather dull; mesoscutal lobes coriaceous and largely matt; scutellum remotely punctate; area of precoxal sulcus largely smooth, with some punctulation; length of vein 1-CU1 of fore wing 0.3-0.4 × vein 2-CU1 and 0.4-0.5 × vein m-cu; marginal and 2nd submarginal cells of fore wing elongate (Fig. 180 ); tarsal claws with robust apical tooth and with medium-sized dark brown pecten (Fig. 190 ); hind femur and basitarsus slender (Figs 178 , 185 ); 1st metasomal tergite comparatively steep anteriorly (Fig. 178 ); basal half of 3rd tergite with posteriorly diverging rugulae; head black; dorsal half of hind femur largely black dorsally; basal half of hind tibia largely dark brown; fore and middle trochanters and trochantelli infuscate or dark brown; 2nd tergite yellowish or reddish and rather slender (Fig. 183 ); 5th-7th tergites of ♂ medially glabrous and convex, and laterally with long setae (Figs 194 , 195 ). Closely related to A. rufipes (Thomson) and differs mainly by the sculpture of the mesoscutum (matt instead of rather shiny), darker colour of legs, different COI and less robust 2nd and 3rd metasomal tergites.

Description.

Holotype, ♀, length of fore wing 6.1 mm, of body 6.7 mm.

Head. Antennal segments of ♀ 54, antenna 1.1 × as long as fore wing, its basal segments robust, subapical segments medium-sized and apical segment with spine; frons largely smooth, except for some micro-sculpture; OOL 0.9 × diameter of posterior ocellus, rugulose-coriaceous and rather dull, groove beside posterior ocellus deep and smooth; vertex coriaceous with some rugulae, rather dull; face transversely rugose; clypeus densely rugulose; ventral margin of clypeus thin and not protruding forwards (Fig. 188 ); width of hypoclypeal depression 0.4 × minimum width of face (Fig. 186 ); length of eye 2.1 × temple in dorsal view (Fig. 187 ); vertex behind stemmaticum coriaceous; clypeus partly above lower level of eyes; length of malar space 0.3 × length of eye in lateral view.

Mesosoma. Mesoscutal lobes largely coriaceous and matt; precoxal area of mesopleuron partly remotely punctulate and superficially micro-sculptured; medio-longitudinal carina of metanotum distinct posteriorly; scutellum punctate and with lateral carina; propodeum convex and rugose, medio-longitudinal carina absent posteriorly, and without protruding carinae laterally.

Wings. Fore wing: r 0.35 × 3-SR (Fig. 180 ); 1-CU1 slightly oblique, 0.35 × 2-CU1; r-m 0.4 × 3-SR; 2nd submarginal cell long (Fig. 180 ); cu-a slightly inclivous, straight but posteriorly slightly curved; 1-M nearly straight posteriorly; 1-SR widened; surroundings of M+CU1, 1-M and 1-CU1 densely setose. Hind wing: marginal cell linearly widened, its apical width 2.3 × width at level of hamuli (Fig. 180 ); 2-SC+R slightly longer than wide; m-cu absent; M+CU:1-M = 50:46; 1r-m 0.6 × 1-M.

Legs. Tarsal claws with rather conspicuous and medium-sized dark brown pecten (Fig. 189 ); hind coxa (except depression) coriaceous and with some rugulae dorsally; hind trochantellus robust and with long setae; length of hind femur and basitarsus 4.5 and 5.8 × their width, respectively; length of inner hind spur 0.5 × hind basitarsus.

Metasoma. First tergite convex and basally rather steep, as long as wide apically; 1st and 2nd tergites with medio-longitudinal carina and longitudinally rugose; maximum width of 2nd tergite 1.5 × its median length; medio-basal area of 2nd tergite medium-sized triangular and rather short (Fig. 183 ); 2nd suture distinct and moderately crenulate; basal half of 3rd tergite finely rugulose and rugulae diverging posteriorly, remainder of metasoma nearly smooth; 4th and apical half of 3rd tergite without sharp lateral crease; ovipositor sheath wide, with long setae and apically truncate (Fig. 179 ).

Colour. Black; mesoscutum posteriorly, legs (but fore and middle telotarsi, fore and middle femora basally and apically, fore and middle trochanters and trochantelli, hind tarsus dark brown or infuscate, posterior half of hind femur dorsally and hind tibia largely blackish), propodeum and 1st -3rd metasomal tergites (but posterior half of 3rd tergite blackish posteriorly) reddish brown; tegulae brownish yellow, but humeral plate largely dark brown; palpi, pterostigma and veins dark brown; wing membrane slightly infuscate.

Variation. Antennal segments: ♀ 52(1), 54(1); ♂ 53(1). Length of fore wing 5.3-6.1 mm. Male is very similar to female (Figs 195-195 ). Apical tergites of male type 1-2, and fringe scarcely visible in the single male seen.

Distribution.

Sweden.

Etymology.

Coriaceus is Latin for leathery, because of the coriaceous sculpture of vertex and mesoscutum.

Figures

Figures 178, 179. Aleiodes coriaceus sp. nov., ♀, holotype 178 habitus lateral 179 ovipositor sheath lateral.

Figures 180 - 191. Aleiodes coriaceus sp. nov., ♀, holotype 180 wings 181 mesosoma lateral 182 mesosoma dorsal 183 propodeum and 1 st- 3 rd metasomal tergites dorsal 184 fore femur lateral 185 hind femur lateral 186 head anterior 187 head dorsal 188 head lateral 189 outer hind tarsal claw 190 base of antenna 191 apex of antenna.

Figures 192 - 195. Aleiodes coriaceus sp. nov., ♂, paratype 192 habitus lateral 193 inner hind claw lateral 194 3 rd- 7 th metasomal tergites dorsal 195 3 rd - 7 th metasomal tergites lateral.