Other Common Names
Twice-Stabbed Cactus Lady Beetle
Synonyms and other taxonomic changes
Chilocorus cacti (Linnaeus)
Orig. Comb: Coccinella cacti Linnaeus
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.
- 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)
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.
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.
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)