Chrysomela confluens (Coleoptera Chrysomelidae) is a chemically defended leaf beetle
that feeds predominately on juvenile cottonwood trees (Kearsley and Whitham 1989, Floate et al.
We have adopted an historically informed approach to investigate the degree to which such genetic constraints can explain the host associations of the leaf beetle
genus Ophraella (Futuyma 1992; Futuyma et al.
The yellowmargined leaf beetle
, Microtheca ochroloma Stal (Coleoptera: Chrysomelidae), is a major pest of cruciferous vegetables (Brassicales: Brassicaeae) in the southern United States (USA) (Chamberlin & Tippins 1948; Ameen & Story 1997a).
For instance, we're pulling together three kinds of expertise to answer the not-so-simple question, "Is the leaf beetle
just one species or many?
While in Nepal they discovered an iridescent chrysomelid leaf beetle
that feeds on the leaves of skunk vine both as a larva and an adult and appears to be related to the chrysomelid beetle that successfully controlled klamath weed (St.
A lace bug, Dulinius conchatus Distant (Tingidae), and a leaf beetle
, Sphenoraia rutilans Hope (Chrysomelidae) have undergone host specificity testing but neither demonstrated the narrowness of host range needed in a skunk vine biocontrol agent (Pemberton et al.
Microtheca ochroloma Stal (Coleoptera: Chrysomelidae), the yellow-margined leaf beetle
, is a serious pest of crucifer crops in the southeastern USA (Chamberlin & Tippins 1949).
A leaf beetle
, Diorhabda elongata, and a mealybug, Trabutina mannipara, were shipped to ARS quarantine labs in Albany and Temple for further study.
Species delimitation in the leaf beetle
genus Macroplea (Coleoptera, Chrysomelidae) based on mitochondrial DNA, and phylogeographic considerations.
Townsend has also worked cooperatively with Richard Hall of Ohio State University screening elms for elm leaf beetle
During exploratory surveys, the leaf beetle
Gratiana boliviana Spaeth (Coleoptera: Chrysomelidae) was found on tropical soda apple plants in southern Brazil.
Some successes have been dramatic, including substantial control of at least five insect pests (cereal leaf beetle
, Rhodesgrass mealybug, pea aphid, alfalfa blotch leafminer, alfalfa weevil) and three weeds (Klamath weed, alligatorweed, puncturevine).