Colaspis louisianae Blake 1974

Colaspis louisianae

DESCRIPTION.—From 4.0 to 5.0 mm in length, oblong oval, entirely yellow brown except jaws and 7th and 3 apical antennal joints, which are dark; elytral costae much as in brunnea except the two nearest suture wider than rest.

Head with interocular space more than half width of head, finely punctate over upper half with clypeus well defined and with scattered punctures, labrum with small emargination, jaws alone dark. Prothorax convex, densely punctate, sides faintly angulate below middle, a tooth at each corner. Scutellum pale. Elytra with 8 costae on each, first two next to suture tending to be wider and flatter and first two intervals more or less singly punctate. Body beneath entirely pale. Length 4.0–5.0 mm; width 2.5–3.0 mm.

TYPE.—Male, and 28 paratypes, USNM Type no. 26904.

TYPE-LOCALITY.—Paincourtville, Louisiana, 19 June 1929, W. L. Haley, on soybeans.

OTHER LOCALITIES AND HOSTS.—Louisiana: Baton Rouge, on fuchsia, rose, corn; Plaquemine, on turnip; Crowley, on cotton; Jeanerette, on soybeans; Lafayette, on cotton; Opelousa; Gueydan; St. Charles Parish, on corn; Houma, on soybeans; Poydras, on string beans.

Colaspis louisianae is a species of leaf beetle from North America. It is distributed in Texas and Louisiana in the United States. It is close in appearance to Colaspis brunnea.

According to Chapin (1979), C. louisianae is the most common species of the genus Colaspis in field crops in Louisiana.