Synonyms and other taxonomic changes
Syn: Stenelmis bicarinata auct. nec LeConte
Brown (1987) found the holotype of
S. bicarinata LeConte 1852 to be similar to
S. convexula Sanderson 1938, and gave the name
S. cheryl n. sp. to the species mistakenly treated as
S. bicarinata by most workers.
S. cheryl will key out to
S. bicarinata in
(1) and Sanderson (1938); the true
S. bicarinata will key out to
S. convexula (Brown 1987)
Explanation of Names
Stenelmis cheryl Brown, 1987
patronym for
Cheryl B. Barr, Collection Manager Emeritus, UC Berkeley
Size
length 2.7-3.25 mm (Brown 1987)
Identification
form and color elongate,
sides of elytra nearly parallel,
elytra dark brown to black,
each elytron with an entire yellow vitta covering humerus (umbone) and extending inside of sixth interval to near apex;
antennae and palpi testaceous to light brown;
pronotum with basal tubercle elongate but not carinate;
elytra with vittae covering fourth and fifth strial intervals;
legs with tarsomere 5 shorter than tarsomeres 1-4 combined. (Brown 1987)
Range
e US to NM (NM-NJ-WI) / Mex. -
Map (2)(3)Habitat
in gravelly or rocky streams (Brown 1972); usually found under submerged stones in fairly still waters out of main current (Burke 1963)
Remarks
Type Locality: Blanco, Texas
Print References
Brown, H.P. 1972. Synopsis of the genus Heterelmis Sharp in the United States, with description of a new species from Arizona (Coleoptera, Dryopoidea, Elmidae). Ent News 83: 229-238.
Brown, H.P. 1987.
Stenelmis cheryl: new name for a well-known riffle beetle (Coleoptera: Elmidae). Entomological News, 98(3): 111-112.
Full Text
Burke, H.R. 1963. Notes on Texas riffle beetles (Coleoptera: Elmidae). Southwestern Naturalist 8(2): 111-114.
LeConte, J.L. 1852. Synopsis of the Parnidae of the United States. Proc. Acad. Nat. Sci. Philadelphia 6: 41-45.
Sanderson, M.W. 1938. A monographic revision of the North American species of Stenelmis (Dryopidae: Coleoptera). Univ. Kansas Sci. Bull. 25(22): 635-717.
Contributed by
Mike Quinn on 23 May, 2009 - 10:23am
Additional contributions by
v belovLast updated 29 September, 2020 - 12:03pm