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Species Stenelmis cheryl - Cheryl's Riffle Beetle

Stenelmis cheryl Brown - Stenelmis cheryl Stenelmis cheryl Brown - Stenelmis cheryl Stenelmis cheryl Brown - Stenelmis cheryl Stenelmis cheryl Brown - Stenelmis cheryl Stenelmis cheryl Brown - Stenelmis cheryl
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Elateriformia)
Superfamily Byrrhoidea (Pill, Water and Toe-winged Beetles)
Family Elmidae (Riffle Beetles)
Subfamily Elminae
Tribe Elmini
Genus Stenelmis
Species cheryl (Cheryl's Riffle Beetle)
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 at 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 (TX-NJ-IA) / Mex. (2), (BG data)
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.
Internet References
The Aquatic Invertebrates of Texas - Stephen W. Ziser, 2010
Works Cited
1.Aquatic dryopoid beetles (Coleoptera) of the United States
Brown H.P. 1972. USEPA Water Poll. Control Res. Ser., Vol. 6. ix+82 pp.
2.A catalog of Coleoptera of America North of Mexico. Elmidae
Brown H.P. 1983. USDA Agriculture handbook no. 529-143b. x + 23 pp.