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Upcoming Events

Interested in a 2022 BugGuide gathering in New Mexico?

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events


Species Thermonectus nigrofasciatus

Beetle ID? Thermonectus - Thermonectus nigrofasciatus Dytiscidae -? - Thermonectus nigrofasciatus - male Thermonectus nigrofasciatus - male Thermonectus nigrofasciatus? - Thermonectus nigrofasciatus diving beetle? - Thermonectus nigrofasciatus Thermonectus nigrofasciatus Unknown Beetle - Thermonectus nigrofasciatus - female Unknown Beetle - Thermonectus nigrofasciatus
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 Dytiscinae
Tribe Aciliini
Genus Thermonectus
Species nigrofasciatus (Thermonectus nigrofasciatus)
Synonyms and other taxonomic changes
Thermonectus nigrofasciatus (Aube)
Orig. Comb: Acilius nigrofasciatus Aubé, 1838
2 subspecies (1):
T. n. nigrofasciatus
T. n. ornaticollis
Diagnosis (1):
Elytra freckled with black with a postmedian transverse black blotch
pronotum with 2 transverse black markings (subbasal, subapical) that do not meet the side margins and are occasionally joined together
yellow to reddish ventrally
e. US to AZ (1)
June-Nov (BG data)