Helorus

Izadizadeh, Mohammad, Talebi, Ali Asghar, Achterberg, Cornelis Van & Rakhshani, Ehsan, 2015, First record of the family Heloridae (Hymenoptera: Proctotrupoidea) from Iran, with description of a new species, Zootaxa 3946 (4), pp. 577-582 : 578

Key to West Palaearctic species of the genus Helorus

1. First metasomal tergite slender subbasally; 2.7–3.3 × as long as its maximum width in dorsal view (in ♂ H. striolatus 2.3–2.7), in lateral view relatively slender ( Fig. 2 D, 4D); face and mesoscutum smooth, with inconspicuous sculpture and at most punctulate (e.g. marked with very small dots or punctures)..................................................... 2

- First metasomal tergite wider subbasally, 1.8–2.3 × as long as its maximum width in dorsal view, in lateral view moderately high and mesoscutum distinctly finely punctate or coarsely rugose-punctate (e. g. marked with spots, holes or depressions)...................................................................................................... 4

2. Pterostigma stout ( Fig. 3 B), 2.1–2.6 × as long as wide; mesopleuron with smooth area near anterior margin; antenna yellowish brown ( Fig. 3 A); fore and middle legs yellow or yellowish-brown ( Fig. 3 A).................. H. ruficornis Förster, 1856

- Pterostigma slender ( Fig. 1 B), 2.9–3.6 × as long as wide; mesopleuron distinctly crenulate-rugose subanteriorly; antenna dark brown or black ( Fig. 1 A); coxae, trochanters and basal halves of femora of fore and middle legs black ( Fig. 1 A)......... 3

3. Frons laterally, vertex ( Fig. 2 A) and middle lobe of mesoscutum ( Fig. 2 B) largely smooth; first metasomal tergite 3.2–3.5 × as long as wide in lateral view ( Fig. 2 D)....................... H. alborzicus Izadizadeh , van Achterberg & Talebi sp. nov.

- Frons laterally finely and more or less densely punctate and middle lobe of mesoscutum and vertex moderately shiny and finely punctulate; first metasomal tergite 2.3–3.0 × as long as wide in lateral view............ H. striolatus Cameron, 1906

4. Face, vertex, temple and middle lobe of mesoscutum coarsely reticulate–rugose................ H. nigripes Förster, 1856

- Face, vertex, temple and middle lobe of mesoscutum moderately finely punctate............ H. anomalipes (Panzer, 1798)

Figures

FIGURE 1. Helorus alborzicus Izadizadeh, van Achterberg & Talebi sp. nov. A. Lateral aspect of female general habitus, B. Fore wing.

FIGURE 2. Helorus alborzicus Izadizadeh, van Achterberg & Talebi sp. nov. A. Dorsal aspect of head, B. dorsal aspect of mesosoma, C. Dorsal aspect of metasoma, D. Lateral aspect of metasoma.

FIGURE 3. Helorus ruficornis Foerster, 1856. A. Lateral aspect of male general habitus, B. Fore wing.