Acentroptera dejeanii Guérin-Méneville

Staines, C. L., 2014, A revision of the genus Acentroptera Guérin-Méneville, 1844 (Coleoptera: Chrysomelidae: Cassidinae), Insecta Mundi 2014 (332), pp. 1-19 : 5-6

Acentroptera dejeanii Guérin-Méneville

Fig. 3

Acentroptera dejeanii Guérin-Méneville 1844: 271 (type: Brazil, depository unknown). Baly 1858: 123 (noted); Gemminger and Harold 1876: 3608 (catalog); Weise 1911a:19 (catalog), 1911b: 27 (catalog); Guérin 1953: 100 (faunal list); Papp 1953: 50 (catalog); Uhmann 1957: 66 (catalog), 1966: 272 (noted); Staines 2010: 1 (type species).

Acentroptera dejeani Guérin-Méneville. Donckier 1899: 568 (catalog).

Acenthroptera alapista Thomson 1856: 479 (type: Brazil, depository unknown). Baly 1858: 123 (synonymy); Staines 2010: 1 (noted).

Description. Elongate; subparallel; convex; metallic blue-black; antennae and front of head reddish; pronotum reddish, margined with greenish-black, with medial longitudinal black vitta; elytra with large yellow transverse band on apical 1/3; venter reddish; legs (except red femora) black. Head: vertex densely punctate, medial sulcus present; carina present between antennal bases; not depressed between eyes; frons punctate, slightly tuberculate; clypeus alutaceous. Antenna: reaches to humerus; antennomere 1 subglobose, subequal in length to 2; 2 expanding to apex; 3 cylindrical, 1½x length of 2; 4 ¾ length of 3, expanding to apex; 5-6 expanding to apex, decreasing in length; 7-10 transverse, subequal in length, each slightly shorter than 6; 11 1½x length of 10, broadly rounded at apex. Pronotum: quadrate; convex; lateral margin sinuate, angulate just posterior to middle, narrowly margined; anterior angle angulate, slightly produced; posterior angle oblique; surface coarsely, densely punctate; transverse basal impression present medially; pronotal length 2.7 mm; pronotal width 2.7 mm. Scutellum: quadrate; micropunctate. Elytron: lateral margin slightly expanding apically, smooth, margined; apex rounded, slightly laminate; sutural angle with minute tooth; humerus angulate; regularly punctate-striate; quadricostate, costa 2 strongly developed on basal 2/3; elytral length 8.1-8.5 mm; elytral width 4.7-5.0 mm. Venter: prosternum punctate medially, impunctate laterally; meso- and metasterna impunctate medially, punctate laterally; abdominal sterna sparsely punctate, each puncture with pale seta. Leg: punctate; tibia with each puncture with pale seta, with fringe of setae on inner apical margin. Total length: 11.0-14.0 mm.

Discussion. Baly (1858) merely repeated Guérin-Méneville’s (1844) original description, which is detailed enough to confidently assign specimens to the species name. Since the original description was based on specimens from the Chevrolat and Dejean collections, which were widely dispersed, the type specimen may exist in a smaller museum in Europe. Therefore a neotype designation is not justified at this time.

Host plant. Unknown.

Distribution. Colombia (from Uhmann 1957), Brazil (Rio de Janeiro).

Specimens examined: no label data (USNM). Brazil: no data (BMNH). Rio de Janeiro- no further data (NHMW). Total: 3.

Figures

Figures 1-9. Habitus of Acentroptera species. 1) Acentroptera basilica Thomson. 2) Acentroptera bita Staines n. sp. holotype. 3) Acentroptera dejeanii Guérin-Méneville. 4) Acentroptera emdeni Uhmann. 5) Acentroptera lacordairei Lucas. 6) Acentroptera lineata Staines n. sp. holotype. 7) Acentroptera nevermanni Uhmann. 8) Acentroptera norrisii Guérin-Méneville. 9) Acentroptera ohausi Weise.