Eotrechus, OF

Polhemus, John T., Tran, A. D. & Polhemus, Dan A., 2009, The Genus Eotrechus (Heteroptera: Gerridae) In Vietnam With Descriptions Of Two New Species, Raffles Bulletin of Zoology 57 (1), pp. 29-37 : 30

KEY TO SPECIES OF EOTRECHUS OF VIETNAM

1. Male pygophore with posterolateral projections bearing a finger-like process at apex. Female genitalia totally concealed by sternum VII and tergum VIII ......... E. brevipes Andersen

– Male pygophore with posterolateral projections (if present) without finger-like process at apex. Female genitalia not concealed by sternum VII and tergum VII...........................2

2. Pronotum and mesonotum with a prominent light median longitudinal stripe, laterally with brownish markings, but not extensive light markings. Male genitalia without prominent posterolateral projections ( Figs. 8, 10 ) .................................... ........................................................ E. fansipan , new species

– Pronotum and mesonotum with extensive light markings medially and laterally. Male genitalia with prominent posterolateral projections ( Figs. 14, 16 ) .............................. 3

3. Male pygophore with a pair of prominent posterolateral digitate and flat projections ................. E. vietnamensis Tran & Yang

– Male pygophore with a pair of prominent posterolateral broad foliate processes, directed upward in lateral view ( Figs. 14–16 ) ................................................. E. pumat , new species

Figures

Figs. 4–10. Eotrechus fansipan, new species, structural details: 4, male foreleg; 5, female abdomen, left lateral view; 6, male proctiger, left lateral view; 7, male proctiger, dorsal view; 8, male terminal abdomen, ventral view; 9, male pygophore, left lateral view; 10, male pygophore, dorsal view.

Figs. 11–16. Eotrechus pumat, new species, structural details: 11, male foreleg; 12, female abdomen, left lateral view; 13, male proctiger, dorsal view; 14, male terminal abdomen, ventral view; 15, male pygophore, left lateral view; 16, male pygophore, dorsal view.