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Genus Pleocoma - Rain Beetles

Beetle ID - Pleocoma fimbriata - male Pleocoma shastensis - male Pleocoma staff - male Pleocoma dubitabilis? - Pleocoma dubitabilis - male Pleocoma oregonensis Leach, 1933 - Pleocoma oregonensis - male Pleocoma hovorei  - Pleocoma hovorei - male Pleocoma rubiginosa rubiginosa Hovore 1972 - Pleocoma rubiginosa - male Black Rain Beetle (Pleocoma puncticollis), Green Valley, Cuyamaca Rancho State Park, CA, 11-21-16 - Pleocoma puncticollis - male
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)
Superfamily Scarabaeoidea (Scarab, Stag and Bess Beetles)
Family Pleocomidae (Rain Beetles)
Genus Pleocoma (Rain Beetles)
Explanation of Names
Pleocoma LeConte 1856
Greek pleos 'abundant' + kome 'hair'
27 spp. (33 taxa incl. ssp.), all in our area(1)
s. WA, OR, CA and into Baja California, Mexico.
Life Cycle
See under "Ecology" heading here.(2)
Print References
Davis, A. C. (1935). A revision of the genus Pleocoma. Bulletin of the Southern California Academy of Science 33: 123-130, 34:4-36.
Fellin, D. G. (1975). Feeding habits of Pleocoma larvae in coniferous forests of western Oregon. Northwest Scientist 49: 71-86.
Fellin, D. G. (1981). Pleocoma spp. in western Oregon coniferous forests: observations on adult flight habits and on egg and larval biology. Pan-Pacific Entomologist 57: 461-484.
Fellin, D. G. (1986). Movement and distribution of Pleocoma larvae in western Oregon coniferous forest soils (Coleoptera: Scarabaeidae). Pan-Pacific Entomologist 62: 58-76.
Hovore, F. T. (1971). A new Pleocoma from southern California with notes on additional species (Coleoptera: Scarabaeidae). Pan-Pacific Entomologist 47: 193-201.
Hovore, F. T. (1972). Three new sympatric Pleocoma from the southern Sierra Nevada mountains of California. Bulletin of the Southern California Academy of Science 71: 69-80.
Hovore, F. T. (1977a). New synonymy and status changes in the genus Pleocoma LeConte. Coleopterists Bulletin 31: 229-238.
Hovore, F. T. (1977b). A review of the taxonomic and distributional relationships of Pleocoma hoppingi Fall and Pleocoma rubiginosa Hovore. Coleopterists Bulletin 31: 319-327.
La Rue, D. A. (2007). A New Species of Pleocoma Leconte from California (Coleoptera: Scarabaeoidea: Pleocomidae). The Coleopterists Bulletin, 61(2), 149-158. (JSTOR)
Leach, E. R. (1931). Two old and two new Pleocomas. Pan-Pacific Entomologist 9: 184-187.
Linsley, E. G. (1938). Notes on the habits, distribution and status of some species of Pleocoma (Coleoptera, Scarabaeidae). Pan-Pacific Entomologist 14: 49-58 and 97-104.
Linsley, E. G. (1941). Additional observations and descriptions of some species of Pleocoma (Coleoptera, Scarabieidae). Pan-Pacific Entomologist 17: 145-152.
Linsley, E. G. (1945). Further notes on some species of Pleocoma (Coleoptera, Scarabaeidae). Pan-Pacific Entomologist 21: 110-152.
Linsley, E. G. (1946). A preliminary key to the species of Pleocoma. Pan-Pacific Entomologist 22: 61-65.
Mudge, A. D. & Adams, T. B. (2007). A New Host Record and First Report of Pleocoma dubitabilis dubitabilis Davis (Coleoptera: Pleocomidae) as a Pest of Christmas Trees. The Coleopterists Bulletin, 61(2), 292-294. (JSTOR)
Ritcher, P. O. (1947). Description of the larva of Pleocoma hirticollis vandykei Linsley. Pan-Pacific Entomologist 23: 11-20.
Smith, R. F. & Potts, R. W. (1945). Biological notes on Pleocoma hirticollis vandykei Linsley (Coleoptera: Scarabaeidae). Pan-Pacific Entomologist 21: 115-118.
Internet References
Fact sheet from San Diego Natural History Museum
Genus info page from "Tree of Life" web site.