Dinotrema latitergum (Fischer, 1969) Peris-Felipo & Belokobylskij, 2018

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 : 24

Dinotrema latitergum (Fischer, 1969) , comb. nov.

( Figs 19 , 20 )

Aspilota latitergum Fischer 1969b: 252 ; Shenefelt 1974: 975; Marsh 1979: 221; Yu et al. 2012.

Material examined. 1 female (holotype), " U.S.А., Cabin John, Md., Spring.1917, R.M. Fouts ( NMNH)" ; 1 female (paratype), same locality as holotype, but "Spring.1912" ( NHMW) .

Redescription. Female. Body 2.1 mm; fore wing 2.2 mm; hind wing 1.5 mm.

Head. In dorsal view, 2.0 × as wide as median length, 1.4 × as wide as mesoscutum, smooth. Eye in lateral view 1.1 × as wide as temple medially. POL 1.6 × OD; OOL 4.4 × OD. Face 1.5 × as wide as high. Clypeus 3.0 × as wide as high. Paraclypeal fovea reaching halfway distance between clypeus and eye. Mandible 1.3 × as long as its maximum width, widened towards apex. Upper tooth wide, longer than lower tooth; middle tooth long, pointed apically; lower tooth, subrounded. Аntenna completely missing. [Аccording to original description by Fischer (1969b) first flagellar segment 4.0 × as long as its maximum width].

Mesosoma. In lateral view 1.2 × as long as high. Mesoscutum (in dorsal view) 0.9 × 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 weakly crenulated. Propodeum completely sculptured, without complete median longitudinal carinae. Propodeal spiracles small, its diameter 0.2 × as wide as distance from spiracle to anterior margin of propodeum.

Leg. Hind femur 4.3 × as long as its maximum width.

Wings. Radial (marginal) cell 3.6 × as long as its maximum width. Vein r2 (3-SR) 2.1 × as long as vein cuqu1 (2-SR); vein r3 (SR1) 2.2 × as long as vein r2 (3-SR).

Metasoma. First tergite widened towards apex, 1.8 × as long as its apical width, striated. Ovipositor 1.2 × as long as first tergite, shorter than metasoma, about as long as hind femur.

Colour. Body dark brown. Mandible, legs, scape, pedicel and pterostigma yellowish brown. Wings hyaline.

Variation. Body 1.9–2.1 mm. Otherwise similar to holotype.

Male. Unknown.

Comparative diagnosis. This species is similar to D. stenostigma ( Provancher, 1886) , but differs from it in having the first metasomal tergite 1.8 × as long as its apical width (2.3 × in D. stenostigma ), face 1.5 × as wide as high (1.9 × in D. stenostigma ), upper tooth strongly widened (weakly widened in D. stenostigma ), and vein r3 (SR1) 2.2 × as long as vein r2 (3-SR) (2.6 × in D. stenostigma ).

Figures

FIGURE 20. Dinotrema latitergum (Fischer, 1969) (female, holotype). A. Hind leg, metasoma and ovipositor, lateral view.B. Fore wing.

FIGURE19. Dinotrema latitergum Fischer, 1969) (female, holotype). A. Habitus, lateral view.B. Head and mesosoma,lateral view. C. Mandible. D. Face, frontal view. E. Head and mesonotum, dorsal view. F. Propodeum and first metasomal tergite, dorsal view.