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Genus Phengodes - Glowworms

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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 Phengodidae (Glowworm Beetles)
Tribe Phengodini
Genus Phengodes (Glowworms)
Explanation of Names
Phengodes Illiger 1807
Greek 'shining'
Numbers
10 spp. in 2 subgenera (7 Phengodes s. str. + 3 Phengodella) in our area; 28 spp. total(1)(2)
Size
♂ 11-20 mm, ♀ up to 40-65 mm(3)(4)
Identification
Separated from Zarhipis by elytra truncate, narrowed distally; frons impressed between antennal bases(1).
Key to spp. in (2)
Range
Phengodes s. str.: e. US to AZ & Mexico; Phengodella: CA, TX to Venezuela & Ecuador(1)
Internet References
Texas Entomology (Quinn 2009)
Works Cited
1.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
2.The genus Phengodes in the United States (Coleoptera: Phengodidae)
Wittmer W. 1975. Col. Bull. 29: 231-250.
3.The Beetles of Northeastern North America, Vol. 1 and 2.
Downie, N.M., and R.H. Arnett. 1996. The Sandhill Crane Press, Gainesville, FL.
4.Beetles of Eastern North America
Arthur V. Evans. 2014. Princeton University Press.