Water Scavenger beetles Edit
"Water" Scavenger beetles do not always live up to their name. About 40% of the species spend most of their life no where near water, let alone swim in it then a lower than 10% are half aquatic and half not with the remaining percent obviously representing the aquatic species (This is not the exact percentage, just a educated guess/ theory). Sometimes some non-aquatic species tumble into water where they hopelessly spin around in circles only reaching the edge of the water by luck or wind which blows them (hopefully) in the right direction. As written on BugGuide "Some species are better adpated to "swimming" in dung that water" which is true for a reasonable percentage. Apparently there are 2803 species across 168 genera known to science currently, with 284 of those found in North America. The Hydrophilid beetles that are aquatic are commonly mistaken for Diving beetles (Dytiscidae) but can easily be identified from the thin, hairless and basic leg appearance whereas Diving beetles have their hind legs covered with hairs and especially the hind legs which are shaped like oars. Some species can be quite large and some very tiny with the sizes ranging from less than 2mm to over 4cm.
|Helophorinid beetle||Helophorinid beetle|
|Helophorus sp.||Helophorus sp.|
|Hydrophilinid beetle||Berosinid beetle|
|Hydrobius fuscipes||Berosus sp.|