Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowse
Info
ImagesLinksBooksData

Genus Moneilema - Cactus Longhorned Beetles

personality beetle - Moneilema armatum Cactus longhorn - Moneilema armatum Cactus longhorn - Moneilema Black Beetle on Cholla Cactus - Moneilema armatum unidentified beetle - Moneilema Cactus longhorn - Moneilema gigas Cactus longhorn - Moneilema gigas Cactus Longhorn Beetle - Moneilema gigas
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 Cucujiformia)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Cerambycidae (Long-horned Beetles)
Subfamily Lamiinae (Flat-Faced Longhorns)
Tribe Moneilemini
Genus Moneilema (Cactus Longhorned Beetles)
Explanation of Names
Moneilema Say 1824
Numbers
6 spp. n. of Mex (1), (20 spp. total) (2)
Size
13-37 mm
Identification
flightless (elytra without humeri), black, with lateral pronotal spines; associated with cacti
variable, see also: Moneilema spp. - Cerambycidae Catalog

M. blapsides: mottled black and white elytra
- Range: c. TX to n. Mex.
M. semipunctatum: antennae with alternating black and white
- Range: CA-AZ-UT
M. appressum: elytra striated
- Range: AZ to w. TX, CO
in the remaining 3 spp., elytra not striated, antennae either entirely black or with white on antennomere 4 only
M. gigas: pronotal spines at least as long as antennomere 9
- Range: AZ, UT
M. armatum: pronotal spines smaller than antennomere 9
- Range: AZ-TX-KS-CO
M. annulatum: pronotal spines reduced to flat tubercles
- Range: w NA to w. TX

"Another character that separates annulatum and appressum from the other species is the internally produced antennal scape (small inward-facing spur at the apex). Distribution can also be used in a few cases to narrow the choices - blapsides occurs only in southcentral TX (and south into Mexico), and armatum occurs in more easterly areas of the southwest while semipunctatum is in the more westerly areas of same (the two species are largely allopatric)." (Ted MacRae)
Range
w NA(1)(2)
Habitat
Arid and semi-arid areas with Cacti.
Season
May-September
Food
Cacti, especially Cholla - Cylindropuntia and Pricklypear - Opuntia. Larvae are borers inside of Cacti, and adults feed externally on foliage, flowers, and fruit. Adults will occasionally feed also on Portulacaceae.
Internet References
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.A Photographic Catalog of the Cerambycidae of the New World