Rhorus inthanonensis Reshchikov & Xu, 2017

Reshchikov, Alexey, Choi, Jin-Kyung, Xu, Zai-fu & Pang, Hong, 2017, Two new species of the genus Rhorus Foerster, 1869 from Thailand (Hymenoptera, Ichneumonidae), Journal of Hymenoptera Research 54, pp. 79-92 : 82-83

Rhorus inthanonensis Reshchikov & Xu sp. n. Figs 2 , 3-7 , 8-10

Material examimed.

Holotype, female, THAILAND, Chiang Mai, Doi Inthanon National Park , camp ground pond, 1200 m, 18°32.657'N 98°31.482'E, Malaise trap, 21-27.ix.2006, T342, leg. Y. Areeluck (QSBG).

Diagnosis.

This species differs from other Oriental species by a combination of the following characteristics: lower mandible tooth slightly longer than upper; lobe of oral carina weakly elevated behind mandibles (Fig. 4 ); face with strong central bulge (Fig. 4 ); areolet petiolate; costula absent; T1 1.5 × as long as apical width; face in female with a pentagonal yellow mark (Fig. 3 ); metasoma reddish-brown except for anterior part of T1 (Figs 2 , 7 ).

Description.

Female (holotype). Body length 6.0 mm. Fore wing length 5.5 mm. Flagellum with 35 flagellomeres, about as long as fore wing; two basal flagellomeres almost as long as maximum diameter of eye; first flagellomere 3.6 × as long as apical width. Head narrowed posteriorly (Fig. 5 ); temple length in middle 0.5 × transverse diameter of eye; cheek convex below eye; temples smooth. Face with setae, ventrally widened with distinct bulge (Fig. 4 ); coarsely and densely punctate; average distance between punctures about 0.9 × their diameter. Frons with finer and sparser punctures than those on face. Clypeus finely and sparsely punctate, very weakly separated from face by a weak depression (Fig. 3 ); its lower margin truncate. Malar space 0.8 × as long as basal width of mandible. Upper tooth slightly shorter than lower tooth; mandible finely punctate, not swollen before base, with a defined transverse depression at its base. Lobe of oral carina weakly elevated behind mandibles (Fig. 4 ).

Pronotum coarsely and densely punctate, with distinct epomia (Fig. 4 ). Mesoscutum coarsely and densely punctate (Fig. 8 ). Mesopleuron (except for speculum) densely punctate (Fig. 6 ); speculum large, covering about 0.6 × length of mesopleuron, with polished part below mesopleural pit extending to hind corner of mesopleuron. Mesoscutellum rather finely punctate (Fig. 8 ). Metapleuron finely punctate. Propodeum shining, finely punctate, with long, dense white setae; basal area as long as broad; costulae absent; areola subquadrate, apical area as long as basal area and areola combined, with distinct longitudinal carina. Pterostigma 2.3 × as long as broad. Areolet petiolate. Fore wing with cu-a postfurcal. Hind wing with Cu1 intercepted below middle. Fore claw with 7 teeth (Fig. 9 ). Hind femur 5.0 × as long as broad; length proportion of hind tarsomeres 1-5 = 38:17:14:8:15; hind claw with 6 teeth.

T1 1.5 × as long as apical width; its longitudinal carinae extending to 0.6 × its length; space between carinae smooth, with fine punctures; dorso-lateral carinae complete. T1 (beyond spiracles) and T2 completely smooth, more or less evenly covered with fine punctures (Fig. 7 ). Last sternite not elongate. Ovipositor slightly downcurved (Fig. 10 ).

Color. Antenna (except for basal flagellomeres ventrally), head, mesosoma, coxae, trochanters, most of fore and mid femora, apical part of hind tibia, hind tarsus, and pterostigma black (Figs 2 - 8 ). Apical part of scape and pedicel, basal flagellomeres ventrally, palpi, pentagonal mark of face, tegula, basal plates of fore wing, apical part of trochanter and fore and mid femora, fore and mid tibiae and tarsi yellowish (Figs 2 -10). Mandible blackish-brown (Fig. 3 ). Hind femur and basal part of hind tibia, metasoma reddish-brown except anterior part of T1 (Figs 2 , 7 ).

Male. Unknown.

Distribution.

Thailand.

Etymology.

The species name " inthanonensis " refers to the type locality, Mount Doi Inthanon, the highest point in Thailand.

Figures

Figure 2. Rhorus inthanonensis Reshchikov & Xu, sp. n., female holotype, habitus in lateral view.

Figures 3 - 7. Rhorus inthanonensis Reshchikov & Xu, sp. n. female holotype. 3 Head in frontal view 4 Head in lateral view 5 Head in dorsal view 6 Mesopleuron and metapleuron 7 Metasoma in dorsal view.

Figures 8 - 10. Rhorus inthanonensis Reshchikov & Xu, sp. n. female holotype. 8 Mesosoma in dorsal view 9 Claw 10 Apex of metasoma in lateral view.