Species Derospidea brevicollis

Eastern Pricklyash Leaf Beetle

Derospidea brevicollis (LeConte)

Orig. Comb: Trirhabda brevicollis J. L. LeConte, 1865

Note non-tapering elytral stripes

Det. M. A. Quinn, 2015

e US to s. TX (TX-FL-NY-IA) - Map (1)(2), most records in TX

Mar-Jul (BG data)

On Rutaceae; preferred host, pricklyash (Zanthoxylum americanum, Z. clava-herculis, Z. hirsutum, occasionally on Citrus (3)

"The life history [...] was studied on Zanthoxylum clava-herculis (Rutaceae) in College Station, Texas. Beetles on two small trees were followed continuously from early February (after prior fall oviposition) to late May (following adult emergence) of 2007. Eggs were laid naturally on the outdoor trees by mature females during the previous summer. After overwintering in the egg masses, larvae began to emerge in late February, followed by widespread emergence in early March. Three larval instars fed actively on new plant growth (primarily foliage) during March and April. Pupation began in early April, and adult emergence was first observed in early May. Larval feeding resulted in near total defoliation of the observed trees. Little predation of larvae was observed." (Keralis & Riley 2007)

Trirhabda bacharidis (Weber) - Note tapering elytral stripes

- Range: coastal eastern NA (TX-FL-QC)

Det. Iustin Cret, 2021

Blake, D.H. 1931. Revision of the species of beetles of the genus Trirhabda north of Mexico. Proceedings of the United States National Museum 79: 1–36.

Keralis, J.D. & E.G. Riley. 2007. Observations on the life history of Derospidea brevicollis (LeConte) (Coleoptera: Chrysomelidae) when feeding upon Zanthoxylum clava-herculis L. in southeast Texas. Student Competition Poster, ESA Annual Meeting.

LeConte, J.L. 1865. On the species of Galeruca and allied genera inhabiting North America. Proceedings of the Academy of Natural Science of Philadelphia, 17: 204-222. (Full Text)

Type - MCZ, Harvard