Comprehensive Description
provided by Smithsonian Contributions to Zoology
Metachroma viticola Linell
Metachroma viticola Linell, 1898, p. 481.
DESCRIPTION.—Between 4.0 and 5.8 mm in length, oblong oval, lustrous; head, elytra, legs, and antennae usually yellow-brown; prothorax convex, deep reddish brown, minutely punctate; body beneath varying from yellow-brown to piceous; elytra convex and without depressions, striate punctures in straight lines, visible to apex although finer in apical half.
Head with interocular space approximately half width of head, occiput minutely punctate with a faint median depression on vertex, no transverse sulcus dividing front from clypeus, clypeus wide and deeply emarginate anteriorly over labrum, alutaceous with fine, sparse punctures, jaws piceous. Antennae extending below humeri, slender, yellow-brown with deeper brown outer joints. Prothorax about a third wider than long, strongly convex with arcuate sides, a very small tooth at each angle, disc lustrous deep reddish brown, minutely punctate. Scutellum reddish brown. Elytra more than twice as long as prothorax and not much wider, smoothly convex, without depressions, only a faint intrahumeral sulcus, striate punctures rather coarse and not dense, finer towards apex and visible throughout, on sides short rows somewhat confused between regular rows; yellowish or even deep reddish brown, often in paler specimens sutural edges deep reddish brown, very shiny, Body beneath shining, with few punctures, varying from yellow-brown to piceous, legs pale, femora not toothed. Claws with long tooth. Length 4–5.8 mm; width, 2.4–2.9 mm.
TYPE.—USNM 1294, with four paratypes.
TYPE-LOCALITY.—Brighton, Texas (on grape, June 27, 1895, J. Taylor, collector).
OTHER LOCALITIES.—Texas: Cameron County, J. G. Shaw; Galveston, F. H. Snow; O. Bryant; Aransas, P. Monarda; Port Aransas, H. and A. Howden; Boca Chica, 25 miles east of Brownsville, H. and A. Howden; Tarpon Beach, Padre Island. Louisiana: Cameron. Mexico: 16 miles south of Tecolutla, Vera Cruz, University of Kansas Mexican Expedition.
- bibliographic citation
- Blake, Doris Holmes. 1970. "A review of the beetles of the genus Metachroma Chevrolat (Coleoptera: Chrysomelidae)." Smithsonian Contributions to Zoology. 1-111. https://doi.org/10.5479/si.00810282.57
Metachroma viticola: Brief Summary
provided by wikipedia EN
Metachroma viticola is a species of leaf beetle. It is found along the Gulf Coast of the United States, particularly in Texas and Louisiana, and has also been reported from Mexico. Its length is between 4.0 and 5.8 mm (0.16 and 0.23 in). The species name, Latin for "grape vine dwelling", was chosen because the species was reported as injurious to grapes.
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