Epyris aequalis Lim et S. Lee

Lim, Jongok, Lee, Jongwook, Koh, Sanghyun, Lee, Bongwoo, Azevedo, Celso O. & Lee, Seunghwan, 2011, Taxonomy of Epyris Westwood (Hymenoptera: Bethylidae) from Korea, with the descriptions of ten new species, Zootaxa 2866, pp. 1-38 : 4-6

1. Epyris aequalis Lim et S. Lee , sp. nov.

( Figs 1–10 )

Type material. Holotype 3, Korea: Gwanmokwon, Korea National Arboretum, Soheul-eub, Pocheon-si, GG, 9.X.2009, B. Byun leg. Paratypes: 1 3, same locality as holotype, 15.X.2009, B. Byun leg.; 1 3, Mt. Suraksan, Sanggye-dong, Nowon-gu, Seoul, MT, 37°40'45"N, 127°05'28"E, 230 m, 7.IX–6.X.2007, J. Lim leg.; 1 3, Korea National Arboretum, Soheul-eub, Pocheon-si, GG, 18.IX.2009, B. Byun leg.; 1 3, Mureung valley, Samhwa-dong, Donghae-si, GW, MT, 10–31.VIII.2005, J. Lee leg.; 1 3, ditto, 31.VIII–10.IX.2006, J. Lee leg.; 1 3, Donam-ri, Banpo-myeon, Gongju-si, CN, MT, 2–8.VIII.2007, Y. Kim leg.

Diagnosis. The species is similar to E. niwoh Terayama 2006 by having scutellar pit separated from each other by more than 1.0 × as its maximum diameter; propodeal disc without sublateral carina; compound eye with short hairs. However, a new species has propodeal disc with single discal carina; antenna totally black; metacarpus long, 0.9 × as long as pterostigma; whereas E. niwoh has propodeal disc with three discal carinae; antenna castaneous except scape dark castaneous; metacarpus short, 0.5 × as long as pterostigma.

Description. MALE (holotype). Body length 2.8 mm ( Fig. 1 ); LFW 2.0 mm ( Fig. 6 ).

Color. Body black; mandible, clypeus and antenna black, palpi dark castaneous; fore wing subhyaline, wing veins dark castaneous, fore leg black except basal half of tibia castaneous and apical half of tibia and tarsi light castaneous, mid- and hind leg black except tarsi dark castaneous.

Head ( Figs 2–4 ). 1.0 × as long as wide. Vertex straight with corner rounded ( Fig. 2 ). Temple profile diverging anterad. Mandible with four apical teeth, upper three teeth small, lower tooth most large and sharpened. Clypeus with angulate median lobe ( Fig. 3 ). First five antennal segments in ratio of 1.6: 1.0: 1.3: 1.4: 1.8 in length; from scape to flagellomere 3 and 11 2.3, 1.6, 1.7, 1.8, 2.3 and 3.1 × as long as wide, respectively ( Fig. 4 ). Frons weakly coriaceous, with dense, small and shallow punctures, separated from each other by 1.0–2.0 × as its maximum diameter. Eye 0.3 mm long with short, erect hairs. HE 1.0 × OOL, WF 2.6 × WOT. Frontal angle of ocellar triangle obtuse, POL 1.4 × AOL, OOL 1.7 × WOT ( Fig. 2 ).

Mesosoma ( Figs 5–7 ). Pronotal disc 0.6 × as long as wide, coriaceous with small dense shallow punctures, dorso-lateral corner forming obtuse angle. Mesoscutum coriaceous with very small punctures. Notauli narrowing and divergent anterad. Parapsidal furrows narrow and slightly divergent anterad. Scutellum coriaceous with some small punctures, scutellar pit oval, each pit separated from each other by 2.2 × as its maximum diameter. Mesopleuron coriaceous with deep oval fovea in central area, margin with groove ( Fig. 5 ). Propodeal disc 0.9 × as long as wide, lateral margin parallel, median carina reaching posterior carina, submedian carina absent, median area with some longitudinally narrow rugae, sublateral area polished, with fine transverse rugae, transverse carina straight; median longitudinal carina of declivity present, lateral of propodeum coriaceous ( Fig. 7 ). Fore wing with long metacarpus, 0.9 × as long as pterostigma; transverse-median vein slightly arched ( Fig. 6 ).

Metasoma ( Fig. 7 ). Petiolate and smooth. Tergum 1 smooth without punctures and hairs. Tergum 2 smooth with very small sparse punctures and sparse long hairs on each lateral surface. Tergum 3 smooth except anterior one third coriaceous with distal sparse hairs. Terga 4–7 coriaceous with distal hairs. Hypopygium wider than long, lateral area membranous and median area moderately sclerotized longitudinally with concave basal margin and median stalk; apical margin concave with hairs.

Genitalia ( Figs 9, 10 ). Paramere spoon-shaped, with narrow base and prominently broad apex with long hairs, dorsal margin. Basiparamere shorter than paramere. Cuspis with sclerotized apex and divided into apical two short arms. Digitus apex aligned with cuspis apex. Aedeagus bottle-shaped, apex not surpassing cuspis apex; basal margin rounded.

Variation. Mandible of some specimens with testaceous apex; TL 2.67–3.28 mm; LH 1.0–1.1 × WH; propodeal disc 0.7–0.8 × as long as wide; scutellar pit separated from each other by 1.8–2.3 × as its maximum diameter.

FEMALE. Unknown.

Distribution. Korea (Seoul, GG, GW, CN).

Etymology. The specific name refers to the long metacarpus, which has similar length as pterostigma.

Figures

FIGURES 1 – 10. Epyris aequalis sp. nov. (male). 1. Habitus; 2. Head; 3. Mandible and clypeus; 4. Antenna; 5. Pronotum and mesonotum; 6. Fore wing; 7. Propodeum; 8. Metasoma; 9. Genitalia, ventral view; 10. Hypopygium, ventral view. Scale bar: 0.10 mm for 9, 10; 0.20 mm for 2, 3, 5, 7; 0.30 mm for 6, 8; 0.50 mm for 1, 4.