Dinotrema interjactum, Papp, 2005

Papp, J., 2005, Braconidae (Hymenoptera) From Mongolia, Xvi. Subfamilies Gnamptodontinae, Brachistinae, Euphorinae, Alysiinae, Acta Zoologica Academiae Scientiarum Hungaricae 51 (3), pp. 221-251 : 229-232

Dinotrema interjactum sp. n. f

( Figs 1–7 )

Material examined (1 f) – Female holotype: Mongolia, Central aimak, 12 km SO von Ulaan – Baator, Nucht in Bogdo ul, 1500 m, 5 Juli 1964, leg. Z. KASZAB (loc. no. 273) . Holotype is deposited in the Hungarian Natural History Museum ( Department of Zoology ), Budapest, Hym. Typ. No. 10719 . Holotype is in good condition, glued on a card ventrally. Etymology. – The species name “interjactum ” indicates that it is intermediate between the closely related species.

Remark. – In my earlier paper ( PAPP 1967: 209) this new species was reported under the name Aspilota fuscicornis (HALIDAY) .

Description of the female holotype. – Body 2.2 mm long. Antenna one-fourth shorter than body and with 18 antennomeres. First flagellomere twice and penultimate flagellomere 1.4 times as long as broad, flagellomeres clearly separated. – Head in dorsal view ( Fig. 1 ) transverse, 1.75 times as broad as long, eye and temple of equal length, temple swollen, i.e. head between temples broader than betwen eyes. Ocelli small, elliptic, OOL nearly three times as long as POL. Head 1.5 times as broad as mesoscutum between tegulae. Eye in lateral view 1.5 times as high as wide, eye and temple of equal width ( Fig. 2 , see arrows), outline of head in lateral view as in Fig. 2 . Mandible ( Fig. 3 ) distinctly broadening distally, 1.3 times as long as broad between upper and lower teeth, tooth 1 large, tooth 2 spiky and less large, tooth 3 rounded; outer surface of mandible smooth. Tentorial pit clearly not reaching eye, about as long as its distance from eye. Head polished. Face and clypeus hairpunctured.

Mesosoma in lateral view stout, just longer than high. Midpit distinct, short and linear. Precoxal suture short, restricted to middle of mesopleuron and with three crenulae. Hind margin of mesopleuron smooth. Propodeum with an unusually formed and rather weakly carinated areola basalis, otherwise rugulose-uneven ( Fig. 4 ). – Hind femur 3.8 times as long as broad distally ( Fig. 5 ). Hind tibia and tarsus equal in length.

Fore wing as long as body. Second submarginal cell of usual length, 3–SR 2.3 times as long as 2–SR, SR1 just bent and 2.5 times as long as 3–SR. Subdiscal cell broadening distally, issuing CU1a from middle of 3–CU(1) + CU1b ( Fig. 6 ).

(FISCHER): 10 = mandible, 11 = head in dorsal view, 12 = propodeum

Metasoma one-sixth longer than head and mesosoma combined. First tergite ( Fig. 7 ) moderately broadening posteriorly, 1.7 times as long as broad behind, just less than twice as broad behind as basally; pair of spiracles before middle of tergite, pair of keels converging, continuing parallel and merging posteriorly into uneven surface. Further tergites polished.

Ground colour of body blackish brown. Mandible brownish yellow, palpi yellowish. Scape and pedicel brownish, flagellum brown to dark brown. Tegula brown, parategula brownish yellow. Tergites brown with dark brown pattern. Legs brownish yellow, telotarsus brownish. Wings hyaline, veins light brown.

Male and host unknown.

Distribution: Mongolia.

The new species, Dinotrema interjactum , runs to the species D. amoenidens (FISCHER) and D. sternaulicum (FISCHER) with the help of FISCHER’ s key (1976: 345–357) and is a member of the signifrons -group. – Related to D. amoenidens by their common features as large upper tooth of mandible, long 3–SR and first tergite weakly striated or uneven; the two species are differentiated as follows:

1 (2) Pair of toruli in dorsal view less protruding, hence head virtually more transverse, temple not swollen ( Fig. 8 ). Propodeum with a weak medio-longitu-

dinal keel and along it widely rugose, lateral margin with crenulae, anteriorly with a transverse keel ( Fig. 9 ). Ground colour of body black. f: 1.8–2 mm. –

Austria, Switzerland, Hungary

D. amoenidens (FISCHER, 1973)

2 (1) Pair of toruli in dorsal view protruding, hence head virtually less transverse, temple swollen ( Fig. 1 ). Propodeum with an unusually formed areola basalis and rugulose-uneven ( Fig. 4 ). Ground colour of body blackish brown. f: 2.2 mm. – Mongolia D. interjactum sp. n.

The new species is also related to D. sternaulicum (FISCHER) considering their common features as temple in dorsal view more or less swollen, long 3–SR and first tergite 1.7–1.8 times as long as broad behind; the two species are distinguished by the following features:

1 (2) Upper tooth of mandible less protruding upwards ( Fig. 10 ). Antenna with 23–26 antennomeres. Temple in dorsal view just swollen, toruli slightly less protruding ( Fig. 11 ). Areola basalis of propodeum distinct, otherwise propodeum rugose ( Fig. 12 ). Scape and pedicel yellow. f: 2.5–2.6 mm. – Austria D. sternaulicum (FISCHER, 1973)

2 (1) Upper tooth of mandible protruding upwards ( Fig. 3 ). Antenna with 18 antennomeres. Temple in dorsal view swollen, toruli slightly more protruding

( Fig. 1 ). Areola basalis of propodeum unusual in form ( Fig. 4 ). Scape and pedicel brownish. f: 2.2 mm. – Mongolia D. interjactum sp. n.

Figures

Figs 1–12. 1–7. Dinotrema interjactum sp. n.: 1 = head in dorsal view, 2 = head in lateral view, 3 = mandible, 4 = propodeum, 5 = hind femur, 6 = subdiscal cell of fore wing, 7 = first tergite. – 8–9. D. amoenidens (FISCHER): 8 = head in dorsal view, 9 = propodeum. – 10–12. D. sternaulicum