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

Fall Fund Drive


Species Apiomerus californicus - California Bee Assassin

Bee Assassin - Apiomerus californicus unknown homoptera - Apiomerus californicus Assassin Bug - Apiomerus californicus Reduviid -- Apiomerus? - Apiomerus californicus Apiomerus californicus? - Apiomerus californicus Black Reduviidae with red - Apiomerus californicus Apiomerus californicus? - Apiomerus californicus California Bee Assassin - Apiomerus californicus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Heteroptera (True Bugs)
Infraorder Cimicomorpha
Family Reduviidae (Assassin Bugs)
Subfamily Harpactorinae
Genus Apiomerus
No Taxon (crassipes species group)
Species californicus (California Bee Assassin)
Synonyms and other taxonomic changes
Apiomerus californicus Berniker & Szerlip, 2011

Members of this species are usually assigned to Apiomerus crassipes by older sources.
Described in 1980 by Sigurd Leopold Szerlip in his PhD dissertation (1), which has not been officially published according to the standards of the International Code for Zoological Nomenclature. Later officially described in a revision of the crassipes group (2). See this forum topic for details.
Explanation of Names
"Named for its distribution throughout California and the Baja California peninsula" (2).
Male: 14.2-15.2 mm. Female: 15.3-16.6 mm.
Generally black with the corium reddish near the costal margin and fading caudad or uniformly bright red. Posterior pronotal margin and lateral connexival margin usually pale. Easily distinguished from A. cazieri and A. flaviventris in southern California by color pattern. The more similarly colored A. crassipes and A. montanus are not sympatric with A. californicus.
California and Baja California, Mexico. An indeterminate locality in Oregon is mentioned though the northern extent of the range remains to be seen (2).
Seems to occur in coastal regions and coastal mountain ranges. Collected from sea level up to 1997 meters (2).
This species exhibits a lower degree of polychromatism than other species of Apiomerus found in the United States.