Venturia tenuiabdominalis Choi, 2022

Choi, Jin-Kyung, 2022, Description of a new species of the genus Venturia Schrottky (Hymenoptera: Ichneumonidae: Campopleginae) from South Korea, Journal of Species Research 11 (2), pp. 128-131 : 129-130

Venturia tenuiabdominalis Choi sp. nov. ( Fig. 1 )

ḦĿHfflŪÑIJşḏnjffi (ṵḋ)

https://zoobank.org/urn:lsid:zoobank.org:act:652F061E-4F9B-4BE5-AD6A-024FD1FC8804

Description (female holotype).

Female. Fore wing 3.9 mm (3.8-4.5 mm), body 7.2 mm (6.5-8.5 mm), ovipositor 2.0 mm (1.6-2.0 mm) long.

Color. Head black; mandible, palpi, and antenna brown; tegula dark brown; fore and mid legs brown; hind coxa brown, darkened basally; hind tibia brown, darkened basally and apically; petiole and 2 nd tergite black; the rest parts of tergites brown, darkened dorsally; ovipositor reddish brown; ovipositor sheath black.

Head: Face convex, densely granulated, distance between margin of antennal socket and clypeal margin 1.08 times as long as distance between of minimum length of inner orbits. Clypeus not separated from face. Malar space 0.5 times as long as basal width of mandible. Lower tooth of mandible as long as upper one. Frons and temple densely granulated. Vertex slightly granulated. Occipital carina weak but complete, concave in dorsal view. Temple 0.7 times as wide as transversal diameter of eye in lateral view. Distance between lateral ocellus and eye 1.3 times as long as ocellus maximum diameter. Antenna with 31 flagellomeres (27-31 flagellomeres). First flagellomere 4.4-4.5 times as long as wide, basal flagellomeres elongated and apical flagellomeres square.

Mesosoma: Elongated. Pronotum slightly granulated with numerous striae centrally; epomia present. Mesoscutum roughly and densely granulated; without notaulus. Mesopleuron regularly punctate; speculum weak convex and glabrous. In front of speculum with transversal striae and mesopleural pit weak. Epicnemial carina complete and sternaulus weak. Mesoscutellum convex, without lateral carina. Metapleuron densely granulated. Propodeum elongated, well developed median longitudinal carinae and with transversal wrinkles, surface granulated. Propodeum reaching at the apical hind coxa. Propodeal spiracle very small and round, not reaching pleural carina. Submetapleural carina present. Legs slender and thin. Trochanter longer than trochantellus. Hind tarsi ratio is 16: 7: 5: 3: 4. Tarsal claw simple. Fore wing without areolet, vein 1 st intercubitus longer than cubitus. Nervulus vein distad to basal vein. Hind wing with four distal hamuli. Nervellus intercepted lower 0.3; discoidella investigial.

Metasoma: Elongated. Petiole smooth, lateral carina present, lateral pit and glymma absent. Basal area of 2 nd sternite with transversal wrinkles. Tergites smooth and glabrous. Margins of tergites 3-7 round in lateral view and concave in dorsal view. Ovipositor thick and upcurved with notch of upper valve, longer than hind tibia. Ovipositor sheath thin.

Male. Unknown.

Material examined. [ South Korea] (TD: DNUE_IIEI): Holotype: $, CB, Danyang-gun , Youngchun-myeon , Namcheon-ri, Mt. Sobaeksan National Park, 6-28. vii.2006, J.W. Lee . Paratypes: 4$$, CB, Danyang-gun , Youngchun-myeon , Namcheon-ri, Mt. Sobaeksan National Park, 6-28.vii.2006, J.W. Lee; 1$, ditto, 28.vii-13.viii.2006, J.W. Lee; 2$$ , CB, Danyang-gun , Danyang-eup, Cheongdong-ri, 59 site, 25.vii-6. viii.2009, S.H. Oh; 2$$, ditto, 6-18.viii.2009, S.H. Oh; 1 $, CN, Gyeryong-si , Sindoan-myeon , Buam-ri , Mt. Gyeryongsan National Park, Gapsa, 17.v-26.viii.2012, J.W. Lee; 1 $, CN, Gyeryong-si , Sindoan-myeon , Buam-ri , Mt. Gyeryongsan National Park, Sutonggol, 17.v-29. viii.2012, J.W. Lee; 2$$ , GG, Gapyeong-gun , Cheongpyeong-myeon , Goseong-ri, Mt. Homyeongsan (Malaise trap), 16-30.vii.2009, J.O. Lim; 1 $, GN, Hamyang-gun , Macheon-myeon , Meokjeon-ri , Baekmu-dong, Mt. Jirisan National Park, 14.vii-11.x.2011, J.C. Jeong .

Host. Unknown.

Distribution. South Korea.

Etymology. Name originates from the Latin “tenuis”, tenuiabdominalis meaning “slender abdominalis”.

Remarks. It is similar to Venturia ocypeta ( Gauld, 1984) , but divers by ovipositor longer than hind tibia (ovipositor shorter than hind tibia in V. ocypeta ); hind tibia brown and darkened apically and basally (hind tibia entirely brown to dark brown in V. ocypeta ); nervellus intercepted lower 0.3 (nervellus not intercepted but curved in V. ocypeta ); antennal flagellomeres and body length longer than V. ocypeta (27-31 flagellomeres in V. tenuiabdominalis sp. nov. but 21-23 flagellomeres in V. ocypeta ).

Figures

Fig. 1. Venturia tenuiabdominalis sp. nov. A. Habitus in lateral view; B. Head in frontal view; C. Mesosoma in lateral view; D. Propodeum in dorsal view; E. Wings; F. Metasoma in lateral view; G.Tergite 3 and 4 in dorsal view. Scale bars:A, 1.0mm; B, D, G, 0.2mm; C, E, F, 0.5mm.