Synonyms and other taxonomic changes
First described in 1844 by James Ellsworth De Kay
, although De Kay mistook the maxillary palps of the larval specimen he had for a second pair of antennae and assumed this was a genus of crustaceans. The name Fluvicola
had already been used for other organisms, so it couldn't be used for these.
First described as a genus of insects by John Lawrence LeConte
in 1853 as Eurypalpus
, but the name had already been used for a genus of other organisms.
first appeared in an 1853 publication by LeConte and Samuel Stehman Haldeman
as a replacement for Eurypalpus
. Haldeman's name was next to it, so he is considered the author- but LeConte apparently considered himself to be the author, instead. Although there was no other information included, this counts officially as the first publication of the name.
Explanation of Names
Greek, probably from psephenos(ψεφηνος) 'dark, obscure', but it's tempting to try to derive it from psephos (ψηφος) 'a small round worn stone, pebble'
There was no explanation of the name accompanying its publication, so we can only guess.
has abdominal gills, while Ectopria
does not (D.S. Chandler's comments here
The resemblance of the larvae to trilobites has been remarked on frequently- going back to the first published description by De Kay- but, aside from both being arthropods, they're not at all related.