Cissidium elongatum, 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 : 183

Cissidium elongatum sp. n.

Figures 5 , 8 , 15 , 21 , 35 , 38

Habitus Fig. 5 . Length 0.84 mm. Colour yellowish brown, legs and antennae lighter. Antennomeres 8–11 0.37 mm long, Fig. 21 . Pronotum 0.34 mm wide, 0.22 mm long, with scattered pubescence, Fig.15 . Elytra 0.55 mm long, 0.42 mm wide, more strongly and densely punctulated than the pronotum. Mesoventrum: keel flattened and parallel sided before collar which almost reaches lateral margins, collar with a narrow median posterior projection; a series of shallow linear depressions, which are longer than they appear in the SEM figure, radiate from the collar and keel some reaching almost to the meso/metaventral suture, Fig. 8 , 35 .

Etymology. The longest of the species described to date.

Diagnosis. The length of this species will quickly distinguish it from all others but lisae , from which it may be separated by the shape of the mesoventral keel and the antennae.

Type material. Holotype: ♀, GPS 37, BOL / Nov 2013/12, BOLIVIA 2013 SANTA CRUZ dep., W Amboro NP Barientos, 1813m, sifting litter, 29.xi., S. 18°06' 06" E.63°48'08", Winkler app. extr., P. Baňař lgt. ( UASC). Paratype: ♀, GPS 36, BOL / Nov 2013/11, BOLIVIA 2013 SANTA CRUZ dep., W Amboro NP Barientos, 1817m, 29.xi., sifting litter, S. 18°06' 00" E.63°48'05", Winkler app. extr., P. Baňař lgt.. ( MMBC).

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.

FIGURES 36 – 40. Cissidium spermathecae. 36. C. petri sp. n .. 37. C. amboroensis sp. n .. 38. C. elongatum sp. n .. 39. C. lisae sp. n .. 40. C. globosum sp. n ..