Proctorenyxa koreana Kim & Lee

Kim, Chang-Jun, Lelej, Arkady S., Park, Bia & Lee, Jong-Wook, 2016, Review of the family Proctorenyxidae (Hymenoptera: Proctotrupoidea), with description of new species from South Korea, Zootaxa 4103 (1), pp. 94-100 : 96-100

Proctorenyxa koreana Kim & Lee , sp. nov.

( Figs 8–17 )

Diagnosis. Female. Ratio POL/OOL 0.7 ×; fourth antennomere 3.3 × as long as its apical width. Mesosoma 1.9 × as long as distance between external margins of tegulae. Cell 2Cu of fore wing 2.6 × as long as wide along 1cu-a and 2.0 × as long as wide along 1cu-b; radial (marginal) cell 5.2 × as long as its maximum width. Metasomal petiole 3.9 × as long as wide. Male. Metasomal petiole 4.1 × as long as wide. Cell 2Cu of fore wing 2.6 × as long as wide along 1cu-a and 2.1 × as long as wide along 1cu-b; pterostigma 4.0 × as long as wide.

Material examined. Holotype, ♀, South Korea: Gyeongsangbuk-do, Cheongdo-gun, Unmun-myeon, Haksodaepokpo (U5), 35°38'15"N, 128°59'51"E, 23.III–12.V.2013 (Malaise trap), J.W. Lee [YNU]. Paratypes: South Korea: 2♂, Gangwon-do, Taebaek-si, dangol, 37°07'06"N, 128°56'52"E, 6.V.1999, J.W. Lee [YNU].

Description. Female. Body length 12.0 mm; fore wing length 9.0 mm. Head densely punctate, with golden yellow setae, transverse, much wider than long (46: 25), slightly broader than mesosoma (46: 44) ( Fig. 11 ); ratios POL/LOL/ OOL=14:7:20; ocelli large, their maximum diameter more than LOL ( Fig. 11 ); eyes oval, inner margins almost parallel, eye much narrower than high (43: 80); face below antennal sockets with tubercle ( Fig. 10 ); antenna without tyloids, much shorter than body (10: 19) ( Fig. 1 ); antennomeres 1–15 in following proportions (length: width): 18:28; 10:17; 2:10; 50:15; 48:17; 43:17; 40:17; 38:17; 38:18; 35:18; 30:17; 28:17; 27:17; 27:17; 38:16.

Mesosoma much longer than wide (82: 44) ( Fig. 13 ); pronotum at posterior most points from dorsal view 4.5 × as wide as long (medially), punctate, with distinct transverse carina extending lateral part ( Fig. 12 ); pronotum laterally distinctly longitudinally striate except upper punctate part; notauli deep, crenulate and percurrent ( Fig. 13 ); parapsidal furrows distinct, around half as long as mesoscutum length; prescutellar fovea large and deep, as long as mesoscutellum, smooth at bottom; mesoscutellum densely punctate and convex; mesopostscutellum strongly costate, medially punctate; upper part of mesopleuron densely punctate, with long setae except posterior smooth half; lower part of mesopleuron rugoso-punctate, with long setae; propodeum 0.67 × as long as wide, much longer than metanotum along midline (34: 9) ( Fig. 13 ).

Wing. Fore wing 3.9 × as long as its maximum width, nervulus (1cu-a) slightly postfurcal, 2Cu 2.6 × as long as wide along vein 1cu-a and 2.0 × as long as wide along vein 1cu-b, radial (marginal) cell 5.2 × as long as maximum width ( Figs 11, 15 ); pterostigma 3.3 × as long as wide ( Fig. 15 ). Hind wing 4.3 × as long as its maximum width, with three hamuli.

Metasoma with dense punctures and golden yellow setae except petiole and terga 2; petiole 3.9 × as long as wide ( Fig. 16 ); ratios of length of metasomal terga 1–8 72:75:30:35:30:28:30:32 ( Fig. 14 ).

Color. Body black except metasomal terga partly reddish brown; antenna, palps and legs reddish brown except pedicel, coxae and trochanters, upper part of hind femur black.

Male. Body length 14.0– 14.2 mm; fore wing length 11.3–11.7 mm. Similar to female, but antennomere 4 slightly broadened and concave basally, antennomeres 1–15 in following proportions (length: width): 22:26; 10:18; 4:12; 50:19; 55:18; 50:18; 50:18; 44:18; 41:18; 38:18; 36:18; 36:18; 35:17; 35:16; 42:16; cell 2Cu of fore wing 2.6 × as long as wide along vein 1cu-a and 2.0× as long as wide along vein 1cu-b; metasomal petiole 4.1 × as long as wide.

Host. Unknown. There are three species of Megaxyela Ashmead , which are distributed in the South Korea: M. parki Shinohara, 1992 , M. gigantea Mocsáry, 1909 and undescribed species (Blank et al. in litt.), which may be the potential hosts of Proctorenyxa koreana sp. nov.

Distribution. South Korea (Gyeongsangbuk-do, Gangwon-do). Etymology. The species is named after the type locality.

Figures

FIGURES 8 – 16. Proctorenyxa koreana sp. nov., ♀. 8. Habitus, lateral view; 9. Head, frontal view; 10. Tubercle; 11. Head, dorsal view; 12. Pronotum, dorsal view; 13. Mesosoma, dorsal view; 14. Metasoma, lateral view; 15. Fore wing; 16. Petiole, dorsal view. Scale bars: 2 mm for 8; 1 mm for 14, 15; 0.5 mm for 9, 10, 11, 13, 16; 0.2 mm for 12.

FIGURE 17. Proctorenyxa koreana sp. nov., ♂. Habitus, lateral view. Scale bars: 2 mm.

FIGURES 1 – 7. Proctorenyxa incredibilis, ♀. 1. Habitus, lateral view; 2. Head, frontal view; 3. Head, dorsal view; 4. Petiole, dorsal view; 5. Pronotum, dorsal view; 6. Mesosoma, dorso-posterial view; 7. Propodeum, dorso-posterial view. Scale bar: 2 mm for 1, 1 mm for 2 – 7.