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Genus Isorhipis

Isorhipis nubila (Bonvouloir) - Isorhipis nubila - female Elaterid? - Isorhipis obliqua - male Eucnemidae, head & antennae - Isorhipis ruficornis - male Isoriphis obliqua - Isorhipis obliqua - male false click beetle - Isorhipis obliqua False Click Beetle - Isorhipis ruficornis - female Pennsylvania Beetle for ID - Elaterid - Isorhipis obliqua false click beetle - Isorhipis obliqua - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Elateriformia)
Superfamily Elateroidea (Click, Firefly and Soldier Beetles)
Family Eucnemidae (False Click Beetles)
Subfamily Melasinae
Tribe Melasini
Genus Isorhipis
Synonyms and other taxonomic changes
(=Tharops)
Numbers
Approximately 18 species distributed world wide. Of those, four species are found in the Nearctic region.
Size
3.0-10.0 mm long
Identification
The group can be identified by the lack of antennal grooves on the ventral side of the pronotum, slender tibiae and pectinate antennae in male specimens.


Key:

1 Elytra bi-colored with either yellow and black or orange and black................................................2
1' Elytra entirely black in males or black with silver-white hairs in females. Legs and antennae yellow..
...................................................................................................................I. nubila (Bonvouloir)

2 Median keel on exposed tergite 7 strongly developed...............................................................3
2' Median keel on exposed tergite 7 weak...........................................................I. ruficornis (Say)

3 Eastern US. Strong striae on elytra...............................................................I. obliqua (Say)
3' Western US. Weak striae on elytra............................................................I. occidentalis Muona
Range
One species is distributed in the Rocky Mountains. Two others are widespread in eastern U.S. and Canada and the last species is distributed in the southern U.S.
Habitat
largely found in forested areas.
Season
Mid-April through the end of August.
Food
Larvae have been found in a variety of deciduous tree species like maples, Beech, oaks and hickories.
Life Cycle
Larvae bore in sold, firm wood, especially smaller limbs.
Print References
Muona, J. 2000. A Revision of the Nearctic Eucnemidae. Acta Zoologica Fennica. 212: 106 pp.