Ptenidium brevissimum, Darby, Michael, 2016

Darby, Michael, 2016, Studies of Peruvian Ptiliidae (Coleoptera) 4: Peruvium a new subgenus of Ptenidium with seven new species, Zootaxa 4107 (3), pp. 392-402 : 394

Ptenidium brevissimum sp. n.

(Figs. 1, 12, 19, 24, 31, 36a–b, 37)

Habitus Fig. 1. Length 0.79 mm. Colour black appearing polished and shining, without pubescence except on the front of the head, antennae and legs dusky yellow. Antennomeres 3–11 0.22 mm long, Fig. 37 . Width across eyes 0.26 mm. Pronotum very finely punctured and with a narrow raised border on lateral margins, 0.37 mm wide, 0.23 mm long. Setae at hind angles of pronotum Fig. 12 . Elytra very finely punctured 0.51 mm long, 0.38 mm wide. Scutellum base with a small raised disc and two depressions Fig 24. Proventral keel between procoxae sharply defined posteriorly Fig. 19.

Male: aedeagus Figs. 36 a–b.

Female: spermatheca Fig. 31.

Etymology. After the Latin brevis m eaning short and referring to the antennae.

Diagnosis. The very short antennae will quickly distinguish this species from all others.

Type data: Holotype: ♀, PERU: Cusco Dept.: Villa Carmen Field Station, cafeteria ~ 1.7 km west, research transect, 12.89250°S 71.41917°W, 555m, 24–26.V.2011, D.J. Bennett & E. Razuri, flight intercept trap, PER-11- FIT-011 ( MUSM). Paratypes: 2 exs. same data as holotype ( SEMC / BMNH).

Figures

FIGURES 37 – 49. 37. P. brevissimum antenna; 38. P. contractum antenna; 39. P. gibbosum antenna. 40. P. gibbosum antennomeres 10 & 11 x 1340; 41. P. inornatum abdominal ventrite VII; 42. P. grande abdominal ventrite VII; 43. P. gibbosum mentum and mouthparts x 970; 44. P. grande mentum and submentum x 355; 45. P. inornatum posterior margin of metaventrum and abdominal segments x 665; 46. P. inornatum medial setae on posterior margin of metaventrum x 665; 47. P. inornatum insertion points of medial setae (abraided) on posterior margin of metaventrum x 3800; 48. P. grande abdominal ventrites x 635; 49. P. grande mesoventrum x 355.

FIGURES 12 – 15. Setae on pronotal hind angle. 12. P. brevissimum x 1480; 13. P. carinatum x 2140; 14. P. gibbosum x 1840; 15. P. contractum x 2040.

FIGURES 33 – 36. Aedeagus. 33 a & b. P. grande; 34. P. gibbosum; 35 a & b. P. inornatum; 36 a & b. P. brevissimum.