Dinotrema shannoni (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 : 39-40

Dinotrema shannoni (Fischer, 1969)

( Figs 33 , 34 )

Aspilota shannoni Fischer 1969c: 69 ; Shenefelt 1974: 980; Marsh 1979: 221; Yu et al. 2012. Dinotrema shannoni: Peris-Felipo and Belokobylskij 2016b: 3 .

Material examined. 1 female (paratype), " U.S.А., Glen Echo, Md., 5.vi.1921, R.M. Fouts collector, f 84" ( NHMW).

Redescription. Female. Body 2.3 mm; fore wing 2.6 mm; hind wing 1.8 mm. Head. In dorsal view, 2.0 × as wide as median length, 1.5 × as wide as mesoscutum, smooth. Eye in lateral view 1.3 × as wide as temple medially. POL 1.2 × OD; OOL 2.8 × OD. Face 2.7 × as wide as high. Clypeus 3.0 × as wide as high. Paraclypeal fovea reaching halfway distance between clypeus and eye. Mandible 1.2 × as long as its maximum width, weakly widened towards apex. Upper tooth as long as lower tooth; middle tooth small, pointed apically; lower tooth subrounded. Аntenna more than 15-segmented (apical segments missing). First flagellar segment 2.2 × as long as its apical width. Second segment 1.7 × as long as its maximum width; third to 13th segments 1.5 × as long as their maximum width respectively.

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 crenulated below. Propodeum completely sculptured without median longitudinal carinae. Propodeal spiracles large, its diameter 0.7 × as wide as distance from spiracle to anterior margin of propodeum.

Leg. Hind femur 3.4 × as long as its maximum width.

Wings. Radial (marginal) cell 4.1 × as long as its maximum width. Vein r2 (3-SR) 2.5 × as long as vein cuqu1 (2-SR); vein r3 (SR1) 2.0 × as long as vein r2 (3-SR).

Metasoma. First tergite widened towards apex, 1.6 × as long as its apical width, completely striated. Ovipositor 1.2 × as long as first tergite, shorter than metasoma, 0.7 × as long as hind femur.

Colour. Body and antenna dark brown. Legs brown. Wings hyaline.

Male. Unknown.

Comparative diagnosis. This species is similar to Dinotrema signifrons Viereck, 1906 , but differs from it in having the mandible 1.2 × as long as its maximum width (0.9 × in D. signifrons ), hind femur 3.4 × as long as its maximum width (4.0 × in D. signifrons ), first metasomal tergite 1.6 × as long as its apical width (2.0 × in D. signifrons ), eye in lateral view 1.3 × as wide as temple medially (1.0 × in D. signifrons ), and face 2.7 × as wide as high (2.4 × in D. signifrons ).

Figures

FIGURE 33. Dinotrema shannoni (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.

FIGURE 34. Dinotrema shannoni (Fischer, 1969) (female, paratype). A. Propodeum and first metasomal tergite, dorsal view. B. Hind leg, metasoma and ovipositor, lateral view. C. Fore and hind wings.