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Subfamily Notoxinae - Monoceros Beetles

Notoxus sp. - Notoxus monodon ming - Notoxus calcaratus Notoxus? - Notoxus calcaratus which  - Notoxus ID Request - Beetle - Notoxus calcaratus Notoxus haustrus? - Notoxus haustrus Hooded Antlike Flower Beetles  - Notoxus desertus Notoxus, came to UV light - Notoxus desertus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Tenebrionoidea
Family Anthicidae (Antlike Flower Beetles)
Subfamily Notoxinae (Monoceros Beetles)
Explanation of Names
Notoxinae Stephens 1829
Numbers
>50 spp. in 3 genera in our area(1), ca. 400 spp. in 7 genera worldwide(2)
Identification
easily recognizable by the denticulate anterodorsal horn on pronotum(2) [used mainly to dig into sandy soil(1)]
Range
worldwide; most diverse in Africa(2)
Habitat
larvae usually develop in loose, sandy soils(2)
Food
adults are omnivorous, often feeding on pollen or plant exudates; cases of micropredation have also been registered(2)
Remarks
Adults (esp. males) of many species are attracted to cantharidin, a highly poisonous substance they use as a deterrent against predators (endoparasitoid braconid wasps use it to find their Notoxus hosts, too); females acquire cantharidin with male secretions they consume, and pass it to the offspring(2)
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.Telnov D. (2011) Anthicidae, Ant-like flower beetles (in The Tree of Life Web Project)