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Species Chilocorus cacti - Cactus Lady Beetle

two large red spots - Chilocorus cacti chilocorus cacti? - Chilocorus cacti Chilocorus cacti (Linnaeus) - Chilocorus cacti Chilocorus cacti (Linnaeus) - Chilocorus cacti Lady Bug - Chilocorus cacti Chilocorus cacti (Linnaeus) - Chilocorus cacti Chilocorus cacti Cactus Lady Beetle  - Chilocorus cacti
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 Coccinelloidea
No Taxon (Coccinellid group)
Family Coccinellidae (Lady Beetles)
Subfamily Chilocorinae
Genus Chilocorus (Twice-stabbed Lady Beetles)
Species cacti (Cactus Lady Beetle)
Other Common Names
Twice-Stabbed Cactus Lady Beetle
Synonyms and other taxonomic changes
Chilocorus cacti (Linnaeus)
Orig. Comb: Coccinella cacti Linnaeus 1767
Linnaeus cites a 1764 description by Laurens Theodorus Gronovius under the name "Coccinella coleoptris marginatis nitidis atris, macula solitaria subrotunda utrinque" ("Lady beetle with shiny-black-margined sheaths/elytra, solitary near-round spot on each side")
Explanation of Names
First known from cactus plants in association with the cochineal scale.
8 spp. n. of Mex. (1)
Length 4.0-6.20 mm (2)
Gordon's figures - mesosternum, metasternum, and abdomen yellow or red. (2)

Spmn from central Texas
CA-LA-OK-NV, FL - per BG data
s. CA to s. AZ, c. to s. TX - Map (2) / south to S. Amer. / Caribbean islands
Found on Opuntia (Prickly Pear) cacti and various trees, including especially coconut palm trees.
may be present in agro-ecosystems (3)
Dactylopius opuntiae is on their menu according to "only photo" . According to this table of biological control introductions in Puerto Rico, they also feed on Astereolecanium bambusae, Astereolecanium pustulans and Pseudaulacapsis pentagona.
See Also
The red or yellow ventral surface (except prosternum) will separate C. cacti from C. fraternus and allies which have the mesosternum and metasternum black. (2)

Axion plagiatum also differs in the ventral colouration, and the markings on that species are positioned closer to the front. In Texas, Axion has small markings.
Internet References
Only Web photo till now? (Spanish language site)
Systema Naturae, 13th ed., v.1, pt.2, p.584 - Linnaeus' original description of the species (in Latin)
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 Coccinellidae (Coleoptera) of America North of Mexico
Robert D. Gordon. 1985. Journal of the New York Entomological Society, Vol. 93, No. 1.
3.Survey of lady beetles (Coleoptera: Coccinellidae) found on Texas high plains cotton, alfalfa and weeds.
Carroll, S.C., M.N. Parajulee, and M.D. Arnold. 2007. Proceedings of the World Cotton Conference (September 10–14, 2007), Lubbock, TX.