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Tribe Helopini

Challenge - Nalassus californicus Pretty lil' beetle with its head stuck in Pine bark - Helops pernitens Beetle - Helops Darkling Beetle - Tarpela micans Beetle - Tarpela undulata Tarpela americana - Tarpela undulata Tarpela micans Shiny black beetle - Tarpela micans
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 Cucujiformia)
Superfamily Tenebrionoidea (Fungus, Bark, Darkling and Blister Beetles)
Family Tenebrionidae (Darkling Beetles)
Subfamily Tenebrioninae
Tribe Helopini
Synonyms and other taxonomic changes
classification needs profound rearrangement (Cifuentes-Ruiz et al. 2014)
Explanation of Names
Helopini Latreille 1802
42 spp. in 5 genera in our area(1)
A notable field character is the distinctive death-feint posture, with antennae held parallel and forwardly outstretched while legs are held tightly against the body(2)
primarily throughout the Northern Hemisphere (north temperate to tropical regions); in our area, most spp. in sw. US, and only 11 east of the Mississippi River(2)
During the day, beetles hide under leaf litter and fallen wood at the bases of trees, and appear to be most common in well-drained sites with minimal humus depth and often with moss patches on the ground around trees. They may also hide under loose bark of dead standing wood; larvae and pupae in the soil(2)
adults do not survive a full year but may emerge during warmer winter periods (Dec-Mar) in the so. Coastal Plain(2)
Adults have been observed feeding on lichens on tree trunks at night(2)
Life Cycle
probably univoltine(2)
Adults can be collected in numbers on trees at dark, primarily in spring and early summer(2)
Works Cited
1.Catalogue of Tenebrionidae (Coleoptera) of North America
Yves Bousquet, Donald B. Thomas, Patrice Bouchard, Aaron D. Smith, Rolf L. Aalbu, M. Andrew Johnston, Warren E. Steiner Jr. 2018. ZooKeys 728: 1-455.
2.The Helopini (Coleoptera: Tenebrionidae) of Virginia
W.E. Steiner, Jr. 2009. Virginia Museum of Natural History Special Publication 16: 331-339.