Butterflies of Mexico, USA & Canada
Northern Checkerspot
Chlosyne palla  BOISDUVAL, 1852
subfamily - NYMPHALINAE
Chlosyne palla, Radium Hot Springs, British Columbia, Canada  Chris Orpin
The genus Chlosyne comprises of about 26 species, and is largely Central American in distribution, although there are several species which are found only in North America.
Most of the species have a black ground colour, and are marked with bands or patches of cream and reddish-orange, often in conjunction with a series of white spots in the post-median area of fore and hind wings. The legs of most species are orange. In all species the antennae are fairly short, straight, and end in a flattened club.
Chlosyne palla is found in the north west USA and in British Columbia, Canada.
This species breeds in coastal chaparral, open coniferous or deciduous woodland, scrubby mountain slopes, and alpine meadows and pastures.
The eggs are pale green. They are laid in large batches on the underside of leaves of the foodplant. When fully grown the caterpillars are black with white dots, and black multi-branched dorsal and lateral spikes on each segment. There are dorsal and lateral rows of orange dashes. They feed on the leaves of Aster, Chrysothamnus, Erigeron, Solidago and Senecio ( Asteraceae ).
Adult behaviour
Both sexes commonly nectar at a wide range of herbaceous plants, but strongly favour Asteraceae. Males imbibe moisture from damp ground, and adopt a perch and patrol strategy to locate females.


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