Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Fall Fund Drive

TaxonomyBrowse
Info
ImagesLinksBooksData

Species Bidessonotus inconspicuus

Bidessonotus inconspicuus (LeConte) - Bidessonotus inconspicuus
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 Hydroporinae
Tribe Bidessini
Genus Bidessonotus
Species inconspicuus (Bidessonotus inconspicuus)
Synonyms and other taxonomic changes
Bidessonotus inconspicuus (LeConte)
Orig. Comb: Hydroporus inconspicuus LeConte, 1855
Size
Length 2.0-2.3 mm (1)
Identification

Bidessonotus inconspicuus (LeConte)
Det. G. Challet, 2003
Adult: body elongate oval, side margins of pronotum and elytra strongly discontinuous in dorsal outline; head and pronotum reddish-brown to reddish; antennae yellowish basally, darker at apex; palps yellow; elytra brownish to blackish, side margin paler and expanded to spots near apex; venter pale reddish-brown; head with band of punctures between eyes, each puncture with a seta; pronotum with distinct, evenly spaced punctures in middle, larger punctures present basally; plicae curved at base onto disc; elytra densely punctate; plicae curved at base, then directed inward toward suture; female elytra with purplish iridescence (1)
sexually dimorphic: female stouter than male and has preapical "tooth" on outer margin of each elytron
females are identifiable to species only by association with males, and males are identified to species by genitalic structure (i.e. the aedeagus has a smooth "toe" portion, and its "heel" is not distinctly produced - see pg. 54 in PDF doc by Epler)
Range
e. NA (TX-FL-NY-MN) / SE Can (1)
Habitat
ditches, ponds, streams, woodland pools; adults are attracted to light
Remarks
Type Locality: Louisiana
See Also
in B. pulicarius, maximum body length is slightly less (to 2.0 mm), the aedeagus has a rounded projection on the "toe" portion, and its "heel" is distinctly produced [see pg. 54 in PDF doc by Epler]
in B. longovalis, elytral plicae are distinctly longer than pronotal plicae, maximum body length is slightly greater (to 2.4 mm), and the species is apparently absent from the northeastern United States and Canada
in Anodocheilus, each elytron has longitudinal carina (keel) running almost to apex