Discheramocephalus interfusus, Darby, Michael, 2016

Darby, Michael, 2016, Studies of Peruvian Ptiliidae (Coleoptera) 3: the genus Discheramocephalus Johnson including six new species, and validation of the unavailable generic name Phytotelmatrichis Darby and Chaboo, Zootaxa 4097 (3), pp. 416-425 : 422

Discheramocephalus interfusus sp. n.

( Figs. 4 , 10 , 14 , 26 )

Habitus Fig. 4 . Length 0.69 mm. Colour yellowish brown, antennae and legs lighter. Head with a median semicircular depression as inretitus Fig. 14 . Mentum almost square without anteriorly swollen margins. Width across eyes 0.19 mm. Pronotum 0.21 mm wide, 0.18 mm long Fig. 10 . Single elytron 0.39 mm long, 0.14 mm wide. Mesoventral collar and keel Fig. 26 . Metaventrum without lines. Abdominal segment VIII with two large pits each occupying one third the width of the segment. Pygidium with +/- 12 teeth

Etymology. Adjective formed from the Latin interfusus meaning poured between and referring to the species appearance falling between capac / malalae and angustus / stewarti / parvus .

Diagnosis. The shining pronotum lacking visible sculpturation will quickly separate this species from all but capac and malalae from which it may be distinguished by the narrower and more waisted pronotum, and the longer elytral pubescence.

Type data. Holotype: PERU: Cusco Dept.: Villa Carmen Field Station, cafeteria ~ 1.7 km west, research transect, 12.89250°S 71.41917°W, 555m, 21–22.V.2011, D.J. Bennett & E. Razuri, flight intercept trap, PER-11- FIT-007 ( MUSM). The specimen was presented missing both antennae and one elytron.

Figures

FIGURES 2 – 7. Discheramocephalus adults, dorsal habitus. 2. D. malalae; 3. D. capac; 4. D. interfusus; 5. D. inretitus; 6. D. parvus; 7. D. angustus.

FIGURES 8 – 13. Discheramocephalus adults, pronota. 8. D. malalae x 695; 9. D. capac x 645; 10. D. interfusus x 695; 11. D. inretitus x 655; 12. D. parvus x 725; 13. D. angustus x 660.

FIGURES 14 – 15. Discheramocephalus adults, posterior margin of the head. 14. D. interfusus x 1020; 15. D. parvus x 930. FIGURES 16 – 17. Discheramocephalus adults, meso- and metaventrites. 16 D. capac; 17. D. angustus. FIGURES 18 – 19. Discheramocephalus adults, abdominal ventrites showing pits on ventrite VIII. 18. D. capac 19. D. angustus.

FIGURES 25 – 30. Discheramocephalus adults. Mesosternal collar and keel. 25. D. malalae x 1340; 26. D. interfusus x 1120; 27. D. capac x 990; 28. D. inretitus x 1200; 29. D. parvus x 1400; 30. D. angustus x 1120.