16 STUTTGARTER BEITRAGE ZUR NATURKUNDE Ser. A, Nr. 622 
Semen ro, 
at 

Figs 27-34. Diatrichalus spp., male genitalia. -— 27. D. bipunctatus sp. n.; — 28. D. striatus 
sp. n.3 — 29. D. fasciatus sp. n.; — 30. D. humeralis sp. n.; — 31. D. rubricostatus 
sp. n.j — 32. D. pallidihumeralis sp. n.; — 33. D. emarginatus sp. n.; — 34. D. secre- 
tus. — Scales: 0.5 mm. 
Differential diagnosis: D. habbema is distinguishable from all known 
species of Diatrichalus in New Guinea by dark ochre coloration of the elytra. The 
shape of the male genitalia shows a relationship with D. sedlacekiae and other 
species with a ventral process of phallus. 
