Dacnusa (Pachysema) gumbus, Papp, 2004

Papp, J., 2004, Braconidae (Hymenoptera) From Mongolia Xv. Subfamily Alysiinae: Dacnusini, Acta Zoologica Academiae Scientiarum Hungaricae 50 (3), pp. 245-269 : 254-256

Dacnusa (Pachysema) gumbus sp. n. m

( Figs 25–29 )

Material examined (1 m). – Male holotype: Mongolia, Uvs aimak, 4 km OSO vom Pass Ulaan davaa, zwischen See Örög nuur und Ulaangom , 1700 m, 6 VII 1968, leg. Z. KASZAB (loc. nr. 1072). – Holotype is deposited in the Hungarian Natural History Museum ( Department of Zoology ), Budapest, Hym. Typ. No. 10665.

Holotype is in good condition: glued on a pointed card by its mesosternum, right flagellum damaged (with 19 flagellomeres), left hind wing somewhat creased.

Etymology. – The species name “gumbus ” is a phantasy name.

Description of the male holotype. – Body 2.3 mm long. Antenna somewhat longer than body and with 30 antennomeres; first flagellomere three times as long as broad apically and slightly longer than second flagellomere, penultimate flagellomere 1.3 times as long as broad. – Head in dorsal view ( Fig. 25 ) transverse, 1.8 times as broad as long, temple beyond eye just swollen, i.e. head between temples slightly broader than between eyes; eye as long as temple, occiput excavated. OOL twice as long as POL. Mandible 1.4 times longer than broad between teeth 1 and 3, upper and lower teeth great, middle tooth basally less wide ( Fig. 26 ). Head polished, face hair-punctured and shiny.

Mesosoma in lateral view 1.2 times as long as high. Mesoscutum hairy, medially around fovea bare, fovea linear and fairly deep; notaulix distinct on declivous anterior part of mesoscutum. Precoxal suture long linear, smooth, extending to middle of mesopleuron. Propodeum rugose, medially with a small, almost smooth and shiny field, laterally with hairs. – Hind femur 4.1 times as long as broad distally ( Fig. 27 ). Hind tibia and tarsus equal in length.

Fore wing just longer than body. Pterostigma ( Fig. 28 ) long and narrow, parallel-sided, 13 times as long as wide, r twice longer than width of pterostigma, 1–R1 0.6 times length of pterostigma; 3–SR + SR1 ending before tip of wing; m–cu postfurcal.

First tergite ( Fig. 29 ) 1.6 times as long as broad behind, pair of spiracles at middle of tergite, up to spiracles tergite weakly broadening, beyond spiracles parallel-sided; hind half of tergite with longitudinal and dense striation, laterally with long hairs. Combined length of tergites 2–3 slightly longer than first tergite, border between them indistinct. Metasoma from second tergite polished. Hairs restricted along hind margin of tergites.

Antenna and body black. Mandible, palpi and legs yellowish brown, coxae dark brown to blackish, hind tarsus dark fumous. Tegula brown, parategula light brown. Second tergite with weak brownish tint. Wings subhyaline, pterostigma and venation brown pigmented.

The new species, Dacnusa gumbus , runs to D. tricolor TOBIAS, 1998 ( Russia: Far East Maritime Territory) with the help of TOBIAS’ s key (1998: 324–354), the two species are distinguished by a few features not easy to recognize:

1 (2) Head in dorsal view twice as broad as long, temple beyond eye not swollen ( Fig. 30 ). Antenna with 24–25 antennomeres. Teeth 1 and 3 of mandible less great, tooth 2 basally wide ( Fig. 31 ). Precoxal suture short and weakly crenutricolor TOBIAS: 30 = head in dorsal view, 31 = mandible, 32 = hind femur, 33 = first tergite late. Hind femur five times as long as broad apically ( Fig. 32 ). First tergite up to spiracles more broadening ( Fig. 33 ). Tergite(s) 2(–3) yellow to brown. m: 1.4–1.6 mm D. (P.) tricolor TOBIAS

2 (1) Head in dorsal view 1.8 times as broad as long, temple beyond eye just swollen ( Fig. 25 ). Antenna with 30 antennomeres. Teeth 1 and 3 of mandible great,

tooth 2 small ( Fig. 26 ). Precoxal suture long linear, smooth. Hind femur 4.1

times as long as broad distally ( Fig. 27 ). First tergite up to spiracles less broadening Fig. 29 ). Tergite 2 black with weak brownish tint. m: 2.3 mm

D. (P.) gumbus sp. n.

Figures

Figs 25–33. 25–29. Dacnusa (Pachysema) gumbus sp. n.: 25 = head in dorsal view, 26 = mandible, 27 = hind femur, 28 = distal part of right fore wing, 29 = first tergite.– 30–33. Dacnusa (Pachysema)