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Species Largus californicus

Yellow-shouldered bug - Largus californicus Largus sp. - Largus californicus Largus californica mating - Largus californicus Lousy Largus Nymphs - Early Instar - Largus californicus Lousy Largus Nymphs - Early Instar - Largus californicus Largus Nymph - Largus californicus Largus californicus bordered plant bug - Largus californicus
Classification
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 Pentatomomorpha
Superfamily Pyrrhocoroidea
Family Largidae (Bordered Plant Bugs)
Genus Largus
Species californicus (Largus californicus)
Synonyms and other taxonomic changes
Largus cinctus californicus Van Duzee, 1923
Euryophthalmus cinctus californicus Van Duzee
Size
~13 mm ((1))
Identification
This page originally based on photo and description by Hogue (1)
Food
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)].
Life Cycle
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.
Remarks
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).
Print References
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.
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.
Works Cited
1.Insects of the Los Angeles Basin, 2nd edition
Charles L. Hogue. 1992. Natural History Museum of Los Angeles County.