Elachistelmis, Maier, Crystal A., 2012

Maier, Crystal A., 2012, Elachistelmis gen. n. (Coleoptera: Elmidae: Elminae) from Suriname, with description of two new species, Zootaxa 3500, pp. 61-69 : 63

Key to species of Elachistelmis gen. n.

1. Tarsal formula 4–4–4 ( Figs. 15 & 17 ); hind wings with short setal fringe on posterior margin; apex of prosternal process pointed ( Fig. 19 ); elytra quadrimaculate; median lobe of aedeagus 1.5 times as long as wide........... E. tetramera sp. n.

- Tarsal formula 5–5–5 (Fig. 25); hind wings with very short setal fringe, if present at all, on posterior margin; apex of prosternal process rounded (Fig. 23); elytra unicolorous or, at most, bimaculate; median lobe of aedeagus 1.2–1.3 times as long as wide.................................................................................. E. sipaliwiniensis sp. n.

Figures

FIGURES 15 – 21. Elachistelmis tetramera, n. sp.: 15. Mesotarsus; 16. Interior of elytron, showing spines; 17. Metatarsus; 18. Head, vental view; 19. Prosternum; 20. Lateral border of elytron; 21. Elytron, showing long tuberculate setae of dorsal plastron.