Synonyms and other taxonomic changes
Largus cinctus californicus Van Duzee
Euryophthalmus cinctus californicus Van Duzee
This page originally based on photo and description by Hogue (1)
Mostly plants (flowers, leaves, fruit) from a range of families, with a preference for Lupines. L. californicus is not considered a "pest species" of economic importance [Schaefer & Ahmad (2000)].
Five instars: 1.black head, thorax, and appendages, red abdomen
2.-5. are metallic blue-black; 5.with a red spot between wing pads.
[from Booth (1970; cited below) Booth's study contains the most complete description to date of the biology of any Largus sp.
Though currently a valid species ( ITIS
), Halstead (1972; see reference below), after examining "specimen from seven populations of Largus cinctus
ranging from Washington to southern Mexico", found that some specimen in any population matches Van Duzee's description of californicus
. Halstead therefore considers californicus
a synonym of cinctus
. However, Dr. Carl Schaefer thinks that both species - L. californicus
and L. cinctus
- are valid. (pers. communication, HW)
The genus is currently being reviewed by Schaefer & Ahmad (in preparation).
Booth, Carey L. 1990. Biology of Largus californicus (Hemiptera: Largidae). The Southwestern Naturalist 35(1):15-22.
Booth, C. L. 1992. Ontogenetic color change and mating cues in Largus californicus (Hemiptera: Largidae). Annals of the Entomological Society of America 85:331-334.
Halstead, Thomas F. 1970. A New Species of the Genus Largus Hahn With a Key to the Species of the Genus in the Southwestern United States. Pan-Pac. Entomol. 46(1):45-46.
Halstead, Thomas F. 1972. Notes on the Synonymy in Largus Hahn with a Key to United States Species. Pan-Pac. Entomol.48(4):246-248.PDF at BHL
Van Duzee, E.P. 1923. A new subspecies of Euryophthalmus cinctus (Hemiptera). Can. Entomol. 55(11):270.
Schaefer, Carl W., Panizzi, Antonio Ricardo (eds.).2000. Heteroptera of Economic Importance. pp.291-292 on Largus spp., by Schaefer and Ahmad.