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Species Copelatus glyphicus

Small Flat Oval - Copelatus glyphicus Diver #6 - Copelatus glyphicus BG3006 E8373 - Copelatus glyphicus Copelatus - Copelatus glyphicus Beetle IMG_5577 - Copelatus glyphicus Copelatus glyphicus (Say) - Copelatus glyphicus Dytiscid - Copelatus glyphicus Copelatus glyphicus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Dytiscidae (Predaceous Diving Beetles)
Subfamily Copelatinae
Genus Copelatus
Species glyphicus (Copelatus glyphicus)
Explanation of Names
Copelatus glyphicus (Say 1823)
glyphicus = 'carved, engraved'
Size
adult 4.2-4.6 mm(1), larva ~7.5 mm
Identification
Adult: pale yellowish brown to reddish brown, ventral surface darker. Body with fine, moderately dense punctation dorsally. Pronotum with lateral bead complete. Each elytron with short sulcus near margin plus 10 complete sulci. Venter with prosternal process relatively flattened, convex basally.(1)
Larva: gray with grayish-brown or yellowish-brown spots on thoracic segments 2 and 3 and a medial longitudinal stripe. Body subdepressed, elongate. Head subquadrate, with 6 ocelli; antennae 4-segmented, cylindrical, segments 1 and 3 subequal in length, 4th shortest about ½ length of 3. Pronotum with sides rounded, lateral margin with few long setae. Cerci 1-segmented, about as long as abdominal segment 8. Legs without swimming hairs. (Spangler 1962)
Range
widely dist. (se. CAN-MN-OR to FL-CA)(1)
Habitat
ponds, pools, puddles, hollow trees, leaf litter, and temporary pools; adults come to light
Season
adults Mar-Aug in NC
Food
larvae and adults feed on copepods, ostracods, springtails, and aquatic fly larvae
Remarks
C. chevrolati is the only other Copelatus species present in Canada
See Also
very similar to C. punctulatus which is sometimes relegated to synonymy under C. glyphicus. C. punctulatus has punctures on intervals between elytral striae and is common in Florida. (2)
In C. chevrolati, each elytron has only 8 grooves (striae or sulci) rather than 10 (Young 1953)
Print References
Spangler P.J. (1962) Natural history of Plummers Island, Maryland. XIV. Biological notes and description of the larva and pupa of Copelatus glyphicus (Say) (Coleoptera: Dytiscidae). Proc. Biol. Soc. Wash. 75: 19-24.
Works Cited
1.Predaceous Diving Beetles (Coleoptera: Dytiscidae) of the Nearctic Region, with emphasis on the fauna of Canada and Alaska
D.J. Larson, Y. Alarie, and R.E. Roughley. 2001. NRC 43253.
2.The Water Beetles of Florida
Epler J.H. 2010. Florida Department of Environmental Protection. Tallahassee. 414 pp.