Three-banded Lady Beetle
( Coccinella trifasciata subversa )


2012-0129-01100147-COL00341-Coccinella_trifasciata_subversa[1522h16s,F,A,plant-blackberry-stem]{EXD}-G.jpg

PHOTO COMMENT

IDENTIFICATION
Identification:Coccinella trifasciata subversa
(LeConte ,1854 )
Common Name:Three-banded Lady Beetle
Life Stage:(A) adult

PHYLOGENY

Phylum:Arthropoda
Class:Insecta
Superorder:Holometabola
Order:Coleoptera
Suborder:Polyphaga
Family:Coccinellidae
Subfamily:Coccinellinae
Genus:Coccinella
Taxon Code:COL00341
ITIS/TSN:692668

LOCATION DETAILS
Location Name
Joaquin Miller Park, Joaquin Miller Park, 3590 Sanborn Drive, Oakland
County:Alameda County
ECI Site#:CA01100147

RECOGNITION
Recognition
Similar to C. t. perplexa, but the transverse bands are usually reduced, interrupted, or even absent.
Description
Adult: Elytra are red with a single, dark basal band. The pronotum is black with a white anterior margin. Larva: Pale yellow with small dark spots, notably paler than the larvae of other lady beetles.
Sexes
Head pale except black band across base (male) or black with two pale spots (female)
Body Length
4-5 mm.
Similar Taxa
Similar to C. t. perplexa, but usually have the transverse bands reduced, interrupted or absent.

BIOLOGY
Food
Aphids and other soft-bodied insects.
Habitat
Found on grasses, weeds, succulents and crops that host aphids in meadows, weeds, gardens and agricultural fields.
Range
California, north to British Columbia.
Distribution
The west coast of North America
Active Period
Active from spring through summer months and on warm days of fall; diapausing through the colder winter months.
Development
Females lay a cluster of small, pale yellow football shaped eggs, usually in the spring and summer. Eggs are fixed to the underside of a leaf where there are abundant aphids, and sometimes on other substrates. Eggs hatch in about a week. Larvae are light in color and resemble tiny alligators, turning darker as they mature. There are four instars before pupation. Mature larvae anchor to plants or other substrates. Pupation lasts from a few days to more than a week.

CREDITS
Photographer
Eddie Dunbar
Insect Sciences Museum of California

References
Subspecies Coccinella trifasciata subversa. (http://bugguide.net/node/view/98692). Accessed February 1, 2016. .
ITIS.
The Coccinellidae (Coleoptera) of America North of Mexico. Robert D. Gordon (1985), from the Journal of the New York Entomological Society.
Subspecies Coccinella trifasciata subversa. (http://bugguide.net/node/view/98692). Accessed February 1, 2016.


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