Dinotrema stenostigma ( Provancher, 1886 )

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 : 43-45

Dinotrema stenostigma ( Provancher, 1886)

( Figs 37 , 38 )

Scotionerus stenostigma Provancher 1886: 157 ; Dalla Torre 1898: 15; Gahan 1913: 38; Muesebeck and Walkey 1951: 151. Aspilota stenostigma: Fischer 1969c: 73 ; Shenefelt 1974: 981; Marsh 1979: 222. Dinotrema stenostigma: Yu et al. 2012 .

Material examined. 1 female, USА, " Cabin John, Md., Sprimg.1917, R.M. Fouts " ( NHMW) ; 1 male, " Maryland, Glen Echo, Summer.1917, R.M. Fouts, F66" ( NHMW) .

Redescription. Female. Body 1.4 mm; fore wing 1.9 mm; hind wing 1.4 mm.

Head. In dorsal view, 2.0 × as wide as median length, 1.4 × as wide as mesoscutum, smooth. Eye in lateral view 1.2 × as wide as temple medially. POL 1.6 × OD; OOL 4.8 × OD. Face 1.9 × as wide as high. Clypeus 3.0 × as wide as high. Paraclypeal fovea reaching halfway distance between clypeus and eye. Mandible 1.4 × as long as its maximum width, widened towards apex. Upper tooth longer than lower tooth; middle tooth long, pointed apically; lower tooth subrounded. Аntenna more than 13-segmented (apical segments missing). First flagellar segment 3.0 × as long as its apical width. Second segment 2.0 × as long as its maximum width; third to sixth segments 1.8 ×; seventh to 11th 1.5–1.6 × as long as their 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 lateral carinae. Precoxal sulcus present, crenulated, not reaching anterior and posterior margins of mesopleuron. Posterior mesopleural furrow smooth. Propodeum completely sculptured, without median longitudinal carinae. Propodeal spiracles small, its diameter 0.2 × as wide as distance from spiracle to anterior margin of propodeum.

Leg. Hind femur 4.5 × as long as its maximum width.

Wings. Radial (marginal) cell 3.7 × as long as its maximum width. Vein r2 (3-SR) 2.4 × as long as vein cuqu1 (2-SR); vein r3 (SR1) 2.6 × as long as vein r2 (3-SR).

Metasoma. First tergite widened towards apex, 2.3 × as long as its apical width, weakly striated. Ovipositor 1.4 × as long as first tergite, shorter than metasoma, 0.9 × as long as hind femur.

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

Male. Body 1.6 mm; fore wing 1.8 mm; hind wing 1.2 mm. Аntenna 23-segmented. First flagellar segment 3.3 × as long as its apical width; second to 21 st segments 2.5 × as long as their maximum width. Radial (marginal) cell 4.0 × as long as its maximum width. Vein r2 (3-SR) 2.5 × as long as vein cuqu1 (2-SR); vein r3 (SR1) 2.9 × as long as vein r2 (3-SR). Otherwise similar to female.

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

Figures

FIGURE 37. Dinotrema stenostgima (Provancher, 1886) (A, C–F—female, B—male, paratypes). A–B. Habitus, lateral view. C. Mandible.D. Antenna. E. Face, fronta view. F. Head and mesosoma, lateral view.

FIGURE 38.Dinotremastenostigma(Provancher,1886)(female,paratype).A. Headandmesonotum,dorsalview.B.Propodeumand firstmetasomal tergite,dorsalview.C. Hind leg, metasoma and ovipositor, lateral view.D.Fore and hindwings.