Synonyms and other taxonomic changes
Mannerheim, 1843 [Orig. Comb., description at BHL
LeConte, 1865 [New Comb., description at BHL
Explanation of Names
- Latin for 'yellow edged' (1)
Coastal CA -- San Francisco region (3)
The primary host of T. flavolimbata is clearly Baccharis pilularis. Palmer (1986) noted that:
"Although T. flavolimbata has been reported on a number of possible host plants other than B. pilularis, such as Aster, Solidago, Artemesia, Senecio and Eriodictyon (Essig 1929; Blake 1931; Tilden 1953), it is not entirely clear whether feeding was rigorously verified and the citations were prior to the taxonomic revision of the genus by Hogue(4) (1970) who considered B. pilularis to be the only host."
However, T. flavolimbata has
feeding on B. douglasii
, and seen and collected on Aster chilensis
(cf. pg. 152 of Palmer...and this BG post
is a "look-alike" which even shares the same host plant: Baccharis pilularis
There are also 4 other CA species of Trirhabda that might easily be mistaken for T. flavolimbata. They are:
T. luteocincta and T. sericotrachlya...which share Artemisia californica as their host plant; and
T. confusa and T. manisi...which share Ericameria (Chrysothamnus) nauseosa as their host plant.
The above species occur are principally Californian...to the east of the Sierra Nevada-Cascades mountain ranges both T. pubicollis and (the non-vittate form of) T. convergens can also be mistaken for T. flavolimbata...and there may be others!
Tilden, J.W. 1953. Biological Notes on Trirhabda flavolimbata
(Chrysomelidae). The Coleopterists Bulletin, 7(3): 20-23. (JSTOR
Palmer, W.A. 1986. The Host Range of Trirhabda flavolimbata
(Mannerheim) (Coleoptera: Chrysomelidae) and Its Suitability as a Biological Control Agent for Baccharis Spp. (Asteraceae: Astereae). The Coleopterists Bulletin 40(2): 149-153. (JSTOR
Type specimen images
from the Museum of Comparative Zoology, Harvard University. (Somewhat discolored...more than 150 yrs old!)