Astichus

Neser, Ottilie C., 2012, The first record of Astichus Förster (Hymenoptera: Eulophidae: Entiinae), parasitoids of Ciidae (Coleoptera) in bracket fungi, from the Afrotropical Region and the description of four new species from South Africa, Zootaxa 3183, pp. 49-64 : 52-53

Key to the South African species of Astichus

1. Both sexes: scape expanded and flattened apically ( Figs 11–14 ), forewing with angle between stigmal and postmarginal veins 60º; marginal vein more than twice as long as submarginal ( Figs 6, 7). Female: scape more or less same length as club ( Figs 11, 13 ). Male: funicular segments having peduncles longer than nodes, and funicle and club segments with whorls of very long setae ( Figs 12, 14 )................................................................................... 2

- Both sexes: scape slender and longer than club ( Figs 9, 10, 15, 16 ); forewing with angle between stigmal and postmarginal veins 30º–45º; marginal vein less than twice as long as submarginal ( Figs 5, 8). Female: scape longer than club ( Figs 9, 15 ). Male: funicular segments having peduncles shorter than nodes, and setae on funicle segments shorter, about same length as segment plus peduncle ( Figs 10, 16 )...................................................................... 3

2. Both sexes: face with white crossband only above scrobes; antenna with scape having pale base ( Figs 11, 12 ); triangle between stigmal and postmarginal veins dark ( Fig. 6). Female: funicle with segments subquadrate and only F3 pale ( Fig. 11 ); forewing with three crossbands, and disc with faint hairlines ( Fig. 6); gaster with posterior margin of T1–3 incised. Male: F1 without peduncle ( Fig. 12 )......................................................................... A. silvani sp. n.

- Both sexes: face with white band across full width; antenna with scape entirely dark ( Figs 13, 14 ); forewing with distinctive

mottled pattern, triangle between stigmal and postmarginal veins hyaline and disc without hairlines ( Fig. 7). Female: funicle segments beadlike and F1 and F4 pale ( Fig. 13 ); gaster with only posterior margin of T1 incised. Male: F1 with peduncle ( Fig. 14 ).................................................................................... A. gracilis sp. n. 3. Both sexes: scape pale at apex and base ( Figs 9, 10 ); angle between stigmal and postmarginal veins 45º, and postmarginal vein slightly shorter than stigmal ( Fig. 5). Female: funicle with F3 and F4 pale ( Fig. 9 ); forewing with irregular pawprint-like pattern ( Fig. 5); propodeum bowtie-shaped, with anterior and posterior margins meeting medially without a median carina............................................................................................ A. micans sp. n.

- Both sexes: scape pale only at base ( Figs 15, 16 ); angle between stigmal and postmarginal veins 30º and postmarginal vein noticeably shorter than stigmal ( Fig. 8). Female: funicle with only F3 pale ( Fig. 15 ); forewing with spindle-shaped pattern in centre ( Fig. 8); propodeum fairly short, with anterior and posterior margins not meeting medially, there with a few weak, uneven blackish longitudinal ridges separating the margins........................................ A. naiadis sp. n.

Figures

FIGURES 9 – 16. Male and female antennae. 9. Astichus micans Ƥ. 10. A. micans 3. 11. A. silvani Ƥ. 12. A. silvani 3. 13. A. gracilis Ƥ. 14. A. gracilis 3. 15. A. naiadis Ƥ. 16. A. naiadis 3.