Ceutorhynchus mutabilis    



habitat
There is no specific habitat information available.

seasonality
Probably one generation per year. Records from Alberta show the species present from April to August. Records from Arizona also show this species present in March.

identification
According to Dietz (1896), adults of this species are oblong-oval, black, and covered in white scales. The scales are grouped into a scutellar spot (grouping of scales at the base of the thorax and elytra) and a fairly distinct sutural line on the dorsal surface. The antennae have seven funicle (antennal segments between the scape and the clubbed) segments. The first and second of these segments being longer than the third and fourth segments combined. The antennal club is elongate and pointed. The beak is long, slender and curved with some scaling near the base. The tarsi are slender with the second and third segments together being longer than the fourth. The fourth tarsal segment projects less than the length of the third segment. The tarsal claws are also toothed. Length 2.5 - 2.8 mm.

life history
Within the Ceutorhynchini, the larvae generally inhabit the seeds, seed stalks, or stems of herbaceous plants (Blatchley & Leng 1916). The adults most likely feed on brassicaceous herbs such Wormseed Mustard (Erysimum cheiranthoides L.) on which it has been collected in Alberta.

conservation
There is no evidence this is a species of concern.

diet info
There is no available information on this species' diet (Colonnelli 2004).

range
A North American species with a south eastern distribution (Colonnelli 2004). There are also records of this species from California (Dietz, 1896), Arizona, and Alberta.

people
species page authorBlake, A. J.2007 

quick link
http://entomology.museums.ualberta.ca/searching_species_details.php?s=6153

 

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