Dinotrema communis (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 : 13-17

Dinotrema communis (Fischer, 1969)

( Figs 9 , 10 )

Aspilota communis Fischer 1969b: 250 ; Shenefelt 1974: 969; Marsh 1979: 220; Yu et al. 2012. Dinotrema communis: Peris-Felipo and Belokobylskij 2016b: 3 .

Material examined. 1 male (paratype), " U.S.А., Beverly Mass., Gip Moth Lab., 57050, 18.viii.1911, ex Porhetria dispar " ( NHMW).

Redescription. Male. Body 2.2 mm; fore wing 2.3 mm; hind wing 1.7 mm.

Head. In dorsal view, 1.8 × as wide as median length, 1.3 × as wide as mesoscutum, smooth. Eye in lateral view 1.5 × as wide as temple medially. POL 1.7 × OD; OOL 3.1 × OD. Face 1.5 × as wide as high. Clypeus 2.1 × as wide as high. Paraclypeal fovea reaching halfway distance between clypeus and eye. Mandible 1.3 × as long as its maximum width, weakly widened towards apex. Upper tooth rather wide, as long as lower tooth; middle tooth shorter than upper tooth, small, pointed apically; lower tooth short, subrounded. Аntenna 22-segmented. First flagellar segment 3.0 × as long as its apical width. Second to seventh segments 2.0–2.1 × as long as its maximum width; eighth to 18th segments 1.8 × as long as their maximum width; 19th segment 1.6 times, and 20th (apical) segment 2.5 × as long as wide respectively.

Mesosoma. In lateral view 1.1 × 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, elongate. 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 sculptured, with complete median longitudinal carinae. Propodeal spiracles very small, its diameter 0.3 × as wide as distance from spiracle to anterior margin of propodeum.

Leg. Hind femur 3.9 × 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) 2.1 × as long as vein r2 (3-SR).

Metasoma. First tergite weakly widened towards apex, 1.8 × as long as its apical width, weakly striate in apical half.

Colour. Body, legs and pterostigma light brown to brown. Wings hyaline.

Female. Unknown.

Comparative diagnosis. This species is similar to Dinotrema caudatulum (Fischer, 1969) ; differences between both species are shown after the redescription of the last species.

Dinotrema disstriae (Fischer, 1969) ( Figs 11 , 12 )

Aspilota disstriae Fischer 1969a: 105 ; Shenefelt 1974: 971; Marsh 1979: 220; Yu et al. 2012. Dinotrema disstriae: Peris-Felipo and Belokobylskij 2016b: 3 .

Material examined. 1 female (paratype), " U.S.А., Springfield, Vt., 12.vii.1940, ex M. disstria, N.E.F. For. Ins. Lab. 131-205-40-6" ( NHMW).

Redescription. Female. Body 1.4 mm; fore wing 2.0 mm; hind wing 1.3 mm.

Head. In dorsal view, 1.8 × as wide as median length, 1.3 × as wide as mesoscutum, smooth. Eye in lateral view 1.3 × as wide as temple medially. POL 1.1 × OD; OOL 3.3 × 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 1.7 × as long as its maximum width, weakly widened towards apex. Upper tooth rather wide, longer than lower tooth; middle tooth long, pointed apically; lower tooth, subrounded. Аntenna more than 14-segmented (apical segments missing). First flagellar segment 2.2 × as long as its apical width. Second and third segments 1.8–1.9 × as long as its maximum width; fourth to 12th segments 1.5–1.6 × as long as their maximum width respectively.

Mesosoma. In lateral view 1.1 × as long as high. Mesoscutum (in dorsal view) as long as its maximum width. Notauli mainly absent on horizontal surface of mesoscutum. Mesoscutal pit present, oval-elongate. Prescutellar depression (scutellar sulcus) with distinct median and without lateral carinae. Precoxal sulcus present, weakly crenulated, not reaching anterior and posterior margins of mesopleuron. Posterior mesopleural furrow smooth. Propodeum mainly smooth with complete median longitudinal carinae and with short subtransverse carinae emerging from median carina and far distant from propodeal edges. 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 3.8 × as long as its maximum width. Vein r2 (3-SR) 2.3 × as long as vein cuqu1 (2-SR); vein r3 (SR1) 2.3 × as long as vein r2 (3-SR).

Metasoma. First tergite widened towards apex, 1.8 × as long as its apical width, weakly striate in apical half. Ovipositor 1.3 × as long as first tergite, shorter than metasoma, 1.1 × as long as hind femur.

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

Male. Unknown.

Comparative diagnosis. This species is similar to D. pauperum (Fischer, 1969) , but differs from it in having the face 1.5 × as wide as high (2.2 × in D. pauperum ), mandible 1.7 × as long as its maximum width (1.2 × in D. pauperum ), the first flagellar segment 2.2 × as long as its maximum width (3.2 × in D. pauperum ), and hind femur 4.3 × as long as its maximum width (3.8 × in D. pauperum ).

Figures

FIGURE 9. Dinotrema communis (Fischer, 1969) (male, 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 10. Dinotrema communis (Fischer, 1969) (male, paratype). A. Propodeum, dorsal view. B. First metasomal tergite, dorsal view.C. Hind leg and metasoma, lateral view.D. Fore and hind wings.

FIGURE 11. Dinotrema disstriae (Fischer, 1969) (female, paratype). A. Habitus, lateral view. B. Head and mesosoma, lateral view. C. Face, subfrontal view. D. Antenna. E. Head and mesonotum, dorsal view. F. Propodeum and first metasomal tergite, dorsal view.

FIGURE 12. Dinotrema disstriae (Fischer, 1969) (female, paratype). A. Hind leg, metasoma and ovipositor, lateral view. B. Fore and hind wings.