Studies of Peruvian Ptiliidae (Coleoptera) 4: Peruvium a new subgenus of Ptenidium with seven new species Author Darby, Michael text Zootaxa 2016 4107 3 392 402 journal article 39155 10.11646/zootaxa.4107.3.7 c5700bff-ef25-4766-abe5-5671c263fdf9 1175-5326 266247 AC6925B2-F917-42B4-9500-517F44C97622 Ptenidium ( Peruvium sg. n.) Type species of the subgenus Ptenidium gibbosum sp. n. Distinguished from all other Ptenidium species by the globular female spermatheca and, with one exception, by the possession of small tufts of setae on the pronotal hind angles. In addition the pronotum does not bear noticeably larger punctures on the anterior or posterior borders and the aedeagi are distinctive in being broad near the tip and/ or having a more complex profile ( Figs. 33–36 ).