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Genus Laccophilus

¤ - Laccophilus maculosus Dytiscid? - Laccophilus fasciatus Dytiscid - Laccophilus undatus Diver #19 - Laccophilus fasciatus Diver - Laccophilus maculosus aquatic beetle - Laccophilus maculosus Water beetle  - Laccophilus Predaceous Diving Beetle - Laccophilus maculosus
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 Laccophilinae
Genus Laccophilus
Explanation of Names
Laccophilus Leach 1817
15 spp. in NA north of Mexico(1); only 3 species occur in s. Canada. 10 additional species in Mexico.
2nd most diverse dytiscid genus globally, with 280+ described species (2)

Note (3) omitted L. salvini, which occurs in se AZ.
1.9-7.2 mm(3)
No visible scutellum
visible 5-segmented front and mesotarsi (unlike Hydroporinae, whose members have 4 visible tarsal segments- the 5th is hidden)
tip of metatibial (hind tibia) spurs emarginated (notched) - separates from Laccodytes which has the tip of the spurs acute (pointed)
colour generally yellow to black, many with distinct blotches/maculations on the elytra, these may be solid or variously irrorate (freckled)
widespread across North America, although generally more diverse in the southern US (3)
mainly in standing water, some in sluggish streams(3); relatively open pools and ponds in forested and grassland areas(4)
Life Cycle
Univoltine; adults overwinter, larvae develop and mature in spring and summer(3)
Internet References
Works Cited
1.A taxonomic revision of the aquatic beetle genus Laccophilus (Dytiscidae) of North America
Zimmerman, John R. 1970. Memoirs of the American Entomological Society.
2.Diving beetles of the world: systematics and biology of the Dytiscidae
Miller K.B., Bergsten J. 2016. JHU Press. 336 pp.
3.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.
4.American Beetles, Volume I: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia
Arnett, R.H., Jr., and M. C. Thomas. (eds.). 2000. CRC Press LLC, Boca Raton, FL.
5.Atlas of beetles of Russia