Dinostigma Fischer, 1966

Peris-Felipo, Francisco Javier, Santa, Fernando, van Achterberg, Cornelis & Belokobylskij, Sergey A., 2025, Review of the genera and subgenera of the subtribe Aspilotina (Hymenoptera, Braconidae, Alysiinae), with a new illustrated key, ZooKeys 1229, pp. 133-200 : 133-200

Genus Dinostigma Fischer, 1966

Dinostigma Fischer, 1966: 182; Shenefelt 1974: 991; Wharton 1980: 38; van Achterberg 1988: 19; Yu et al. 2016.

Type species.

Dinostigma muesebecki Fischer, 1966 , by monotypy (Figs 10 , 11 ).

Material examined.

Holotype ( Dinostigma muesebecki ). United States Of America: • ♀, North East , Pa. [= Pennsylvania], No 9019, 6. vii. 1912 (F. Johnson leg.) ( NMNH).

Diagnosis.

Mandible small, simple, tridentate. Paraclypeal fovea short, far from reaching inner margin of eyes. Mesoscutum without mesoscutal pit; notauli present only in anterior part of mesoscutum; precoxal sulcus absent; propodeum always smooth; spiracles of propodeum large. In fore wing, marginal cell never shortened; vein r originating from basal quarter of pterostigma; vein 2 - SR absent; vein cu-a postfurcal; first subdiscal cell open distally (without vein 2-1 A). Hind wing with all cells open. Metasoma of ♀ more or less distinctly compressed laterally. Ovipositor sheath shorter than metasoma.

Remarks.

After careful revision of former Dinostigma and Eudinostigma (as subgenus of Dinostigma ) species, only the type species of this genus, Dinostigma muesebecki Fischer, 1966 , is retained in Dinostigma . The species D. stenosoma ( van Achterberg, 1988) is transferred to the genus Dinotrema as a type species of the new subgenus, Pseudoprosapha subgen. nov. (see below), because this species has the first subdiscal cell of fore wing closed, the pterostigma broad and wider than vein r length, and all cells of the hind wing closed ( Dinotrema (P.) stenosoma ( van Achterberg, 1988) , comb. nov.).

This genus is very close to the Oriental-Afrotropical Lysodinotrema Fischer, 1995 , because both of them share, among others, such main diagnostic characters as simple tridentate mandible, short paraclypeal fovea, and mesoscutum without medio-posterior pit. However, the lack of closed cells in the hind wing in Dinostigma (present in Lysodinotrema ), absence of vein 2 - SR (present in Lysodinotrema ), and absence of the precoxal sulcus (present in Lysodinotrema ) are sufficient to separate both as different genera.

Figures

Figure 10. Dinostigma muesebecki Fischer, 1966 (holotype, female) A habitus, lateral view B head and mesosoma, lateral view C mandible D antenna E head, front view F head and mesonotum, dorsal view.

Figure 11. Dinostigma muesebecki Fischer, 1966 (holotype, male) A propodeum B legs, metasoma and ovipositor, lateral view C first metasomal tergite, dorsal view D fore and hind wings.