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Genus Melasis

Cross-grain eucnemid - Melasis pectinicornis Cross-grain eucnemid - Melasis pectinicornis Cross-grain eucnemid larvae - Melasis pectinicornis Cross-grain eucnemid - Melasis pectinicornis - male Cross-grain eucnemid larvae - Melasis pectinicornis Melasis tsugae Hopping - Melasis tsugae Menage a Trois - Melasis pectinicornis - male - female Please help ID. - Melasis pectinicornis
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 Melasis
Numbers
14 species are distributed world wide. Of those, four species are found in the Nearctic region.
Size
4.0-13.0 mm long.
Identification
The group can be identified by their flattened tibiae, lack of antennal grooves on the ventral side of the pronotum and pectinate antennae in male specimens.


Key:

1 Frons simple, usually without transverse ridge....................................................................2
1' Frons with transverse ridge......................................................................M. rufipennis Horn

2 Antennomeres with relatively long rami............................................................................3
2' Antennomeres with short rami.................................................................M. rufipalis Chevrolat

3 Eastern US. Grooved scutellum..........................................................M. pectinicornis Melsheimer
3' Pacific Northwest. Even scutellum................................................................M. tsugae Hopping
Range
One species is restricted in southwestern U.S.. Two others are distributed in western U.S.. Last species is widespread in southern Canada and the southern 3/4 of eastern U.S..
Habitat
Largly found in forested areas.
Season
late April through July.
Food
Larvae have been found in a wide variety of tree species, especially conifers like firs. One species however, have been found in deciduous wood.
Life Cycle
Larvae usually develop in fairly hard wood, but sometimes they can be found in softer wood as well.
Print References
Muona, J. 2000. A Revision of the Nearctic Eucnemidae. Acta Zoologica Fennica. 212: 106 pp.