Ptenidium
Erichson, 1845
Ptenidium is a of minute featherwing beetles ( Ptiliidae) with distribution. The genus contains multiple described , including Ptenidium pusillum, P. aprinum, and P. azafady. Members of this genus are among the smallest beetles known. Larval development includes two instars, and have been observed in association with phoretic mites and .
Pronunciation
How to pronounce Ptenidium: //ptɪˈnɪdiəm//
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Distribution
. Distribution records include Denmark (DK), Norway (NO), and Sweden (SE). P. pusillum occurs in the Palaearctic region.
Life Cycle
, larvae, and pupae have been described for P. pusillum from rearing studies. Two larval instars are present, differing in minor chaetotaxic characters, pigmentation, and measurements. Larvae lack urogomphi, a trait confirmed for the .