Helictes, Haliday, 1837

Scanavachi, Júlia & Penteado-Dias, Angélica Maria, 2025, New species of Helictes Haliday 1837 (Hymenoptera, Ichneumonidae, Orthocentrinae) from Chile, Zootaxa 5665 (1), pp. 121-129 : 122

Key to the females of Neotropical species of Helictes

(modified from Dash 1992 and Humala 2007)

1. Propodeum with short or strong apophysis................................................................. 2. Propodeum lacking apophysis........................................................................... 3

2. Body size more than 5.0 mm; 24 flagellomeres; flagellomeres 13–19 white; fore wing with nervulus interstitial, broken; hind wing with Cu1 present ( Fig. 10 ).......................................................................... 4. Body size smaller than 4.5 mm; flagellomeres 25–29; all flagellomeres black; fore wing with the nervulus interstitial, not broken; hind wing with Cu1 absent........................................................... H. erythrostoma

3. Subocular sulcus absent or very weak ( Fig. 21 ); 17 flagellomeres............................... H. absulcus sp. nov.. Subocular sulcus present; 28 flagellomeres.............................................. H. limbatus Dasch, 1992

4. Body black except for the end of second tergite and sternum white ( Fig. 14 ); mesopleuron polished ( Fig. 17 ); hind wing with vein cu-a inserted well below the level of the M+Cu junction; nervellus strongly inclivous ( Fig. 18 )..... H. tenebrus sp. nov.. Body dark brown; mesopleuron matt ( Fig. 1 ); hind wing with vein cu-a inserted moderately below the level of the M+Cu junction; nervellus moderately inclivous ( Fig. 10 ).............................................. H. magnus sp. nov.

Figures

FIGURES 8–13. Helictes magnus sp. nov. (8–13 holotype ♀) 8, propodeum. 9, fore wing. 10, hind wing. 11, metasoma dorsal view. 12, first tergite 13, ovipositor.

FIGURES 21–25. Helictes absulcus sp. nov. (21–25 holotype ♀). 21, habitus, lateral view. 22, head, anterior view. 23, mesossoma, lateral view. 24, propodeum, dorsal view. 25, metasoma, lateral view.

FIGURES 14–20. Helictes tenebrus sp. nov. (14–20 holotype ♀). 14, habitus, lateral view. 15, head, anterior view. 16, mesosoma, lateral view. 27, head and mesosoma, lateral view. 18, Hind wing. 19, propodeum and part of tergite 1. 20, metasoma, dorsal view.

FIGURES 1–7. Helictes magnus sp. nov. (1–3, 6–13 holotype ♀, 4–5 paratype ♂). 1, habitus, lateral view. 2, head, anterior view. 3, head, posterior view. 4, 5, mesosoma male lateral view. 6, pronotum, dorsal view. 7, posterior tibia.