Abstract
Two species of the featherwing beetle genus Discheramocephalus Johnson are known to occur in Madagascar. One of them is known from females only, and some important morphological structures have never been described and illustrated, including details of male genitalia. Morphology of the male of D. bisulcatus Darby is illustrated and described for the first time, including the aedeagus and abdominal structures, and the male genitalia of D. vasilii Darby are also illustrated in detail for the first time. Diagnoses of both species are emended to include newly described structures.
References
Darby, M. (2013) Studies of Madagascan Ptiliidae (Coleoptera) 1: the tribe Discheramocephalini including eighteen new species. Zootaxa, 3718 (3), 239–266.
https://doi.org/10.11646/zootaxa.3718.3.2
Dybas, H.S. (1980) The smallest beetles (Coleoptera: Ptiliidae). Florida Department of Agriculture and Consumer Service, Division of Plant Industry, Entomology Circular, 218, 1–4.
Grebennikov, V.V. (2008) How small you can go: Factors limiting body miniaturization in winged insects with a review of the pantropical genus Discheramocephalus and description of six new species of the smallest beetles (Pterygota: Coleoptera: Ptiliidae). European Journal of Entomology, 105, 313–328.
https://doi.org/10.14411/eje.2008.039
Grebennikov, V.V. (2009) Discheramocephalini, a new pantropical tribe of featherwing beetles (Coleoptera: Ptiliidae): description of new taxa and phylogenetic analysis. Systematic Entomology, 34, 113–136.
https://doi.org/10.1111/j.1365-3113.2008.00444.x
Johnson, C. (2007) Studies on Ptiliidae (Col.) from the Solomon Islands, 1. Entomologist’s Monthly Magazine, 143, 213–226.