Cissidium tigrum, Darby, Michael, 2015

Darby, Michael, 2015, Studies of Bolivian Ptiliidae (Coleoptera) 1: The genus Cissidium Motschulsky with six new species, Zootaxa 3937 (1), pp. 179-190 : 186-189

Cissidium tigrum sp. n.

Figures 6 , 10 , 17 , 25 , 27, 34 , 43a–b

Habitus Fig. 6 , 0.63 mm long. Colour light brown, antennae and legs dusky yellow. Antennomeres 3–11 0.38mm long, Fig. 25 . Distance across eyes 0.21 mm. Mentum Fig. 27 . Pronotum 0.25 mm wide, 0.16 long, Fig. 17 . Elytra 0.39 mm long, 0.32 mm wide, area around scutellum less closely punctureC. Mesoventrum Fig. 10 , collar extending posteriorly to meet mesocoxal process which is hooked in horizontal view and parallel between the mesocoxae with a rounded posterior termination. Lateral points of metaventral margin between metacoxae small. Aedeagus Figs 43a–b. Females unknown.

Etymology. Named after the species somewhat pugnacious appearance.

Diagnosis. The remarkable form of the antennae, unparalleled in the family, coupled with the species small size will quickly distinguish it from all others.

Type material Holotype: ♂, GPS 26, BOL / Nov 2013/05, BOLIVIA, 24.xi.2013, COCHABAMBA dep., Cristal Mayu River valley ca 20km W of Villa Tunari, S. 17°00'55" E. 65°37'48", sifting litter, 550m, Winkler app. extr., P. Baňař lgt.. ( UASC). Paratype: ♂, same data as holotype ( MMBC).

FIGURES 41–43. Cissidium aedeagi. 41a–b. C. petri sp. n.. 42a–b. C. amboroensis sp. n.. 43a–b. C. tigrum sp. n..

Figures

FIGURES 2 – 7. 2. Cissidium amboroensis sp. n ... 3. C. globosum sp. n .. 4. C. petri sp. n .. 5. C. elongatum sp. n .. 6. C. tigrum sp. n .. 7. C. lisae sp. n ..

FIGURES 8 – 13. Cissidium mesoventrums. 8. C. elongatum sp. n .. x 610. 9. C. globosum sp. n .. x 755. 10. C. tigrum sp. n .. x 860. 11. C. amboroensis sp. n .. x 745. 12. C. petri sp. n .. x 705. 13. C. lisae sp. n .. x 1140.

FIGURES 14 – 19. Cissidium pronota. 14. C. amboroensis sp. n .. 15. C. elongatum sp. n .. 16. C. lisae sp. n .. 17. C. tigrum sp. n .. 18. C. globosum sp. n .. 19. C. petri sp. n.

FIGURES 20 – 25. Cissidium antennae. 20. C. globosum sp. n. female. 21. C. elongatum sp. n. female. 22. C. petri sp. n. female. 23. C. lisae sp. n. female. 24. C. amboroensis sp. n. male. 25. C. tigrum sp. n. male.

FIGURES 26 – 35. 26. Cissidium petri sp. n .. mentum x 1380. 27. C. tigrum sp. n .. mentum x 1220. 28. C. amboroensis sp. n .. mentum x 1260. 29. C. petri sp. n .. abdominal ventrites x 1580. 30. C. petri sp. n .. anterior border of labrum x 4950. 31. C. amboroensis sp. n .. abdominal ventrites x 1380. 32. C. globosum sp. n .. posterior margin of metaventrum showing long points x 500. 33. C. lisae sp. n .. posterior margin of mentaventrum showing short points x 460. 34. C. tigrum sp. n .. mesoventral keel, horizontal view x 840. 35. C. elongatum sp. n .. mesoventral keel x. 680.