Cephaloleia dimidiaticornis Baly, 1869

Staines, Charles L. & Garcia-Robledo, Carlos, 2014, The genus Cephaloleia Chevrolat, 1836 (Coleoptera, Chrysomelidae, Cassidinae), ZooKeys 436, pp. 1-355 : 117-118

Taxon classification Animalia Coleoptera Chrysomelidae

Cephaloleia dimidiaticornis Baly, 1869 Fig. 121

Cephalolia dimidiaticornis Baly 1869: 370. Gemminger and Harold 1876: 3601 (catalog); Donckier 1899: 548 (catalog); Weise 1911a: 7 (catalog), 1911b: 11 (catalog); Uhmann 1953 d: 47 (faunal list).

Cephaloleia dimidiaticornis Baly. Uhmann 1957b: 18 (catalog); Staines and Staines 1999: 523 (Baly species list).

Description.

Small; elongate; subparallel; subconvex; reddish-brown; eyes and antennomeres 7-11 darker. Head: vertex sparsely punctate, medial sulcus absent; small carina present between bases of antennae; frons impunctate, not projecting; slightly depressed between eyes. Antenna: ½ body length; slender; antennomere 1 short, transverse; 2-10 cylindrical; 2 elongate, 2 × length of 1; 3-4 elongate, subequal in length, each longer than 2; 5-6 elongate, subequal, each shorter than 3; 7-10 transverse, sub equal, each shorter than 6; 11 2 × length of 10, acutely pointed at apex; 1-6 punctate; 7-11 setose. Pronotum: transverse; lateral margin straight for basal ¾ then rounding to anterior angle, canaliculate; anterior angle rounded, not produced; posterior angle acute; anterior margin emarginate behind head; disc subconvex; surface sparsely, coarsely punctate, punctures more dense laterally; basal impression absent; pronotal length 0.9-1.1 mm; pronotal width 1.2-1.6 mm. Scutellum: triangular, impunctate. Elytron: lateral margin straight, smooth, margined; apex rounded; sutural angle without tooth; humerus rounded, not produced; slightly constricted behind humerus; subconvex with disc flattened; moderately punctate-striate, punctures less impressed apically; elytral length 3.2-3.6 mm; elytral width 1.5-1.7 mm. Venter: pro-, meso-, and metasterna punctate, each puncture with pale seta; abdominal sterna punctate, each puncture with pale seta; suture between sterna 1 and 2 complete; last sternite with apical margin sinuate medially in male; in female emarginate medially. Leg: slender; punctate, each puncture with pale seta; femur robust; tibia with fringe of setae on inner margin of apex. Total length: 4.0-4.9 mm.

Diagnosis.

This species is similar to Cephaloleia latipennis and Cephaloleia polita . It can be distinguished by the elytral puncture rows being regular to the apex and by antennomere 1 being transverse.

Host plant.

According to label data, adults have been collected on an unidentified palm ( Arecaceae ).

Distribution.

Brazil ( São Paulo), Peru.

Type material examined.

Syntype: Peru [handwritten label]/ Cephalolia dimidiaticornis Baly, Peru [blue handwritten label] (BMNH, 1).

Specimens examined.

BRAZIL: São Paulo- no further data (USNM). Peru: no further data (BMNH). Loreto- Tambo Pirana on Río Cochiquinas, 1 July 1978 (USNM). Total: 3.