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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Elateriformia » Elateroidea » False Click Beetles (Eucnemidae) » Macraulacinae » Euryptychus

Genus Euryptychus

Classification · Synonyms and other taxonomic changes · Numbers · Size · Identification · Range · Habitat · Season · Food · Life Cycle · Remarks · Print References

Euryptychus arizonicus (Van Dyke) - Euryptychus arizonicus - female

Euryptychus ulkei Horn - Euryptychus ulkei - male

Classification

Kingdom Animalia (Animals)

Phylum Arthropoda (Arthropods)

Subphylum Hexapoda (Hexapods)

Class Insecta (Insects)

Order Coleoptera (Beetles)

Suborder Polyphaga

No Taxon (Series Elateriformia)

Superfamily Elateroidea

Family Eucnemidae (False Click Beetles)

Subfamily Macraulacinae

Genus Euryptychus

Synonyms and other taxonomic changes

(=Dyscolocerus Bonvouloir, 1871)

Numbers

World-wide, approximately 22 extant species are known for the group. Greatest diversity are found in Australia. Of those 22 species, three are present in the Nearctic region.

Size

6.0-12.5 mm long.

Identification

The group can be identified by the elongate termminal three antennal segments and simple fourth tarsomeres.

Key

1 Larger size, brown coloration and eastern distribution............................................................2

1' Smaller size, black coloration and southwestern distribution...............................E. arizonicus (Van Dyke)

2 Basal third of pronotum is parallel-sided..........................................................E. ulkei (Horn)

2' Pronotum distinctly narrow from base to the front..............................................E. heterocerus (Say)

Range

One species is distributed in Arizona and New Mexico. Two others are present in Northeastern North America.

Habitat

Largely found in forested areas.

Season

Mid May through the end of August.

Food

Unknown.

Life Cycle

Unknown.

Remarks

The group can be confused with Phlegon, a primitve group restricted in the Neotropical region. They differ by the form of the fourth tarsomeres: excavate-emarginate in Phlegon, simple in Euryptychus.

Print References

Muona, J. 2000. A Revision of the Nearctic Eucnemidae. Acta Zoologica Fennica. 212: 106 pp.

Contributed by Nicolas Gompel on 28 April, 2008 - 3:11pm
Additional contributions by Robert Otto
Last updated 22 August, 2012 - 9:40am

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