heavily punctate black flea beetle - Epitrix pubescens
Nashua, Hillsborough County, New Hampshire, USA April 19, 2007 Size: about 1.8 mm
Found only one of this species so far among thousands of beetles from at least 19 other families (plus many other arthropods) by pawing and sifting through flotsam from a substantially swollen catchment basin after several days of heavy, non-stop rain: