Acentroptera ohausi Weise

Staines, C. L., 2014, A revision of the genus Acentroptera Guérin-Méneville, 1844 (Coleoptera: Chrysomelidae: Cassidinae), Insecta Mundi 2014 (332), pp. 1-19 : 10

Acentroptera ohausi Weise

Fig. 9

Acentroptera ohausi Weise 1910: 116 (Syntype: Ecuador, Loja, 3000 m, Ohaus S.// Cotype USNM 432152 [orange label]// Acentroptera ohausi Weise , cotype (USNM)). Weise 1911a: 19 (catalog), 1911b: 27 (catalog); Papp 1953: 50 (catalog); Uhmann 1957: 66 (catalog); Staines and Staines 1997: 16 (types).

Description. Elongate; subconvex; slightly expanding apically; shining; black, femora and tibiae sometimes reddish-yellow, elytra brownish-red with a black sublateral and sutural vitta which sometimes unite or may be absent. Head: vertex rugosely punctate, medial sulcus present; depressed between eyes; small tooth present between antennal bases; frons micropunctate, carinate; clypeus punctate. Antenna: reaches to humerus; antennomere 1 subglobose; 2 elongate, expanding to apex, 1½x length of 1; 3 cylindrical, slightly longer than 2; 4-7 elongate, elliptical, decreasing in length, 4 shorter than 3; 8-10 transverse, subequal in length; 11 longer than 10, pointed at apex; 1-7 punctate; 8-11 setose. Pronotum: transverse; convex; lateral margin bisinuate, angulate in middle, narrowly margined; anterior angle with blunt tooth; posterior angle acute; with longitudinal medial sulcus from base to middle; surface densely punctate; transverse basal impression present medially; pronotal length 2.1 mm; pronotal width 2.3 mm. Scutellum: quadrate; micropunctate. Elytron: lateral margin smooth, narrowly margined; exterior apical angle rounded, smooth; apical margin sinuate, slightly laminate; sutural angle with small tooth; humerus angulate; regularly punctate-striate; quadricostate, costae weakly produced, complete; elytral length 7.7-8.2 mm; elytral width 3.0- 3.7 mm. Venter: pro- and mesosterna punctate; metasternum punctate medially, rugose laterally; abdominal sterna sparsely punctate, each puncture with pale seta; last sternite with fringe of pale setae on apical margin. Leg: punctate, each puncture with pale seta; tibia with fringe of setae on inner apical margin. Total length 9.5-11.3 mm.

Discussion. Weise’s (1910) description is detailed enough to confidently assign specimens to this species name. Also there are syntypes in two major collections (USNM, ZMHB) so that the designation of a lectotype is not justified.

Host plant. Adults have been collected from a bromeliad ( Weise 1910) ( Bromeliaceae ).

Distribution. Ecuador.

Specimens examined. Ecuador: Loja- Loja, ( USNM) ; Loja 3000 m ( USNM). Total: 2 .

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.