Acentroptera norrisii 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 : 9-10

Acentroptera norrisii Guérin-Méneville

Fig. 8

Acentroptera norrisii Guérin-Méneville 1844: 271 (type: Cayenne, depository unknown). Baly 1858: 123 (noted); Gemminger and Harold 1876: 3608 (catalog); Donckier 1899: 568 (catalog); Weise 1911a: 19 (catalog), 1911b: 27 (catalog); Papp 1953: 50 (catalog); Uhmann 1957: 66 (catalog), 1966: 272 (noted); Staines 2010: 1 (noted).

Description. Elongate; parallel-sided; subconvex; reddish; venter yellowish; head yellowish; antennae reddish, apical 4 antennomeres darker; pronotum with wide black vitta on each lateral margin and narrower medial longitudinal vitta; elytra yellowish with red margins and black humeral band and transverse oblique band near posterior margin; legs pale red. Head: vertex strongly rugose, medial sulcus present; not depressed between eyes; tooth present between antennal bases; frons impunctate, tuberculate. Antenna: short, as long as head and pronotum combined; antennomere 1 cylindrical, robust, shorter than 2; 2-7 cylindrical, elongate, decreasing in length, 3 longest; 8-10 transverse, subequal in length; 11 slightly longer than 10, bluntly pointed at apex; 1-7 punctate, each puncture with pale seta; 8-11 setose. Pronotum: transverse; convex; lateral margin sinuate, angulate in middle; anterior angle with rounded tooth; posterior angle acute; surface strongly rugose, coarsely punctate; medial longitudinal sulcus from base to apex; slight basal impression present; pronotal length 1.9-2.2 mm; pronotal width 2.3-2.7 mm. Scutellum: quadrate; punctate. Elytron: elongate; lateral and apical margins smooth; exterior apical angle rounded; sutural angle without tooth; humerus angulate; strongly punctate-striate; quadricostate, costae strongly produced, costae 1 and 3 unite on apical 1/5; elytral length 7.7-8.2 mm; elytral width 3.7-4.3 mm. Venter: pro- and mesosterna impunctate medially, punctate laterally; metasternum and abdominal sterna impunctate. Leg: impunctate. Total length 10.4-11.5 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. Brazil (Parana, Rio de Janeiro, Santa Catharina, São Paulo), French Guiana.

Specimens examined. Brazil: no further data (NHMW). Parana- Ronlandia, November 1947 (AMNH). Rio de Janeiro- no further data (NHMW). Santa Catharina- no further data (BPBM). São Paulo- 19 December (NHMW). Total: 7.

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.