Dinotrema pauperum (Fischer, 1969)

Peris-Felipo, Frаncisco Jаvier & Belokobylskij, Sergey А., 2018, Revision of the New World species of the genus Dinotrema (Hymenoptera: Braconidae: Alysiinae), Zootaxa 4382 (1), pp. 1-55 : 33-35

Dinotrema pauperum (Fischer, 1969)

( Figs 27 , 28 )

Aspilota paupera Fischer 1969a: 110 ; Shenefelt 1974: 978; Marsh 1979: 221; Yu et al. 2012. Dinotrema pauperum: Peris-Felipo and Belokobylskij 2016b: 3 .

Material examined. 1 female (paratype), " U.S.А., Washington DC., 23.vii.1912, bred from mushroom 12.viii.1912, C.H. Popenoe Collector" ( NHMW); 1 female (paratype), " U.S.А., Аrlington, Va., Аshmead Collection" ( NHMW).

Redescription. Female. Body 1.8 mm; fore wing 2.0 mm; hind wing 1.4 mm.

Head. In dorsal view, 2.0 × as wide as median length, 1.5 × as wide as mesoscutum, smooth. Eye in lateral view 1.2 × as wide as temple medially. POL 1.6 × OD; OOL 2.9 × OD. Face 2.2 × as wide as high. Clypeus 3.3 × as wide as high. Paraclypeal fovea short, not reaching halfway distance between clypeus and eye. Mandible 1.2 × as long as its maximum width, weakly widened towards apex. Upper tooth wide, shorter than lower tooth; middle tooth pointed apically; lower tooth subrounded. Аntenna 24-segmented. First flagellar segment 3.2 × as long as its apical width. Second segment 2.6 × as long as its maximum width; third to 21 st segments 2.1–2.2 ×, and 22nd (apical) segment 3.0 × as long as its maximum width respectively.

Mesosoma. In lateral view as long as high. Mesoscutum (in dorsal view) about as long as its maximum width. Notauli mainly absent on horizontal surface of mesoscutum. Mesoscutal pit present, oval. Prescutellar depression (scutellar sulcus) with distinct median and without lateral carinae. Precoxal sulcus present, crenulated, not reaching anterior and posterior margins of mesopleuron. Posterior mesopleural furrow smooth. Propodeum smooth with complete median longitudinal carinae and with very short subtransverse carinae emerging from median carina, but situated very far from propodeal edges. Propodeal spiracles small, its diameter 0.3 × as wide as distance from spiracle to anterior margin of propodeum.

Leg. Hind femur 3.8 × as long as its maximum width.

Wings. Radial (marginal) cell 4.0 × as long as its maximum width. Vein r2 (3-SR) 3.3 × as long as vein cuqu1 (2-SR); vein r3 (SR1) 2.2 × as long as vein r2 (3-SR).

Metasoma. First tergite almost not widened towards apex, 2.0 × as long as its apical width, smooth. Ovipositor 1.4 × as long as first tergite, shorter than metasoma, 1.2 × as long as hind femur.

Colour. Body and antenna brown to dark brown. Mandible and legs yellowish brown. Wings hyaline.

Variation. First flagellar segment 3.2–3.3 × as long as its apical width. Hind femur 3.8–3.9 × as long as its maximum width.

Male. Unknown.

Comparative diagnosis. This species is similar to D. disstriae (Fischer, 1969) ; differences between both species are shown after the redescription of the latter species.

Figures

FIGURE27.Dinotrema pauperum (Fischer, 1969) (female,paratype).A. Habitus, lateral view.B. Head and mesosoma,lateral view.C. Mandible. D. Antenna. E. Face, frontal view. F. Head and mesonotum, dorsal view.

FIGURE28. Dinotrema pauperum (Fischer, 1969) (female, paratype). A. Propodeum,dorsal view.B.Hind leg, metasoma and ovipositor, lateral view. C. Fore and hind wings.