Chaska nawi, Darby, Michael, 2016

Darby, Michael, 2016, Studies of Peruvian Ptiliidae (Coleoptera) 5: Chaska nawi, a new genus and species of Acrotrichinae, Acrotrichini, Zootaxa 4161 (1), pp. 133-136 : 134

Chaska nawi sp. n.

( Figs.1–15 )

Description. Habitus as in Fig. 1 . Length 1.15 mm. Colour dark brown, pubescence, antennae and legs yellow. Dorsum shining. Antennomeres 3-11 0.36 mm long ( Fig. 2 ). Width across eyes 0.41 mm. Mentum and submentum as in Fig. 10 . Pronotum 0.62 mm wide, 0.34 mm long with rounded posterior angles ( Fig. 8 ). Elytra 0.64 mm long, 0.62 mm wide with epipleuron +/- 2/3 length ( Fig. 9 ). Proventrum with setae on anterior margin ( Fig. 5 ). Mesoventral collar not extending onto humeri, posterior margins crenulated, mesoventral keel interrupted, sharply angled medially towards dorsum Figs. 6,7 . Pygidium as in Fig. 15

Male: aedeagus as in Figs. 3, 4 ; ventrites VI, VII as in Figs. 12, 14 .

Female: not known.

Etymology. The names are from Quechua, one of the major indigenous languages of Peru. " Chaska ñawi " (pronounced Chaska gnawi) means "Bright starry eyes" or "Ojos de lucero". This name was selected in a competition process organized by Caroline Chaboo and the ACA. The winner, Alison Pendrak, had studied abroad in Peru with School for Field Studies at the Villa Carmen Biological Station where C. nawi was found. She had learned the Quechua expression Chaska ñawi from the station's security guard Simeón Chura Quispe Simeon, to express her thrill of the Amazon starry night sky. In her submission she suggested that 'finding a new species is like finding a bright star amidst the darkness'.

Type data: Holotype: ♂, PERU: Cusco Dept.: Villa Carmen Field Station , cafeteria ~ 1.7 km west, cafeteria research transect, 12.89250°S 71.41917°W, 555m, 26–28.V.2011, D.J.Bennett & E. Razuri, flight intercept trap, PER-11-FIT-013 ( MUSM).

Figures

FIGURES 1 – 10. Chaska nawi n. sp. 1. Habitus. 2. Antennomeres 8 - 11. showing arrangement of setae, and presence of sensillae on antennomere 10. 3. Aedeagus ventral view. 4 Aedeagus side view. 5. Underside of head and proventrum showing band of setae anterior to procoxae x 430. 6. Meso- and metaventra x 415. 7. Mesoventral collar showing crenulated posterior margin x 1040. 8. Pronotum showing rounded posterior angle, laterodorsal view x 1520. 9. Elytral epipleuron showing small humeral hook x 580. 10. Mentum and submentum showing chaetotaxy.

FIGURES 11 – 15. Chaska nawi n. sp. 11. Profemora and tarsus showing arrangement of setae, ventral view x 970. 12. Terminal abdominal ventrites x 410. 13. Metafemora and tarsus showing tarsal claws and arrangement of setae, ventral view x 1540. 14. Male ventrites VI & VII. 15. Male pygidium, dorsal view.