Cephaloleia triangularis Staines, 1996

Staines, Charles L. & Garcia-Robledo, Carlos, 2014, The genus Cephaloleia Chevrolat, 1836 (Coleoptera, Chrysomelidae, Cassidinae), ZooKeys 436, pp. 1-355 : 265-266

Taxon classification Animalia Coleoptera Chrysomelidae

Cephaloleia triangularis Staines, 1996 Fig. 254

Cephaloleia triangularis Staines 1996: 65.

Description.

Elongate; subparallel; subdepressed; head (except yellow frons) antennae, and scutellum black; pronotum reddish or yellowish with black macula on anterior margin behind head which varies from semicircular to triangular in shape; elytra black with yellow longitudinal vitta, width of vitta varies from interspace 1 to interspace 7, not narrowing; venter with pro-, meso-, and metasterna yellow medially, black laterally, abdominal sterna 1 yellow medially, black laterally, 2-5 black medially, yellow laterally; legs with femur yellowish, tibia and tarsi black. Head: vertex punctate, medial carina present; frons not projecting; not depressed between eyes. Antenna: reaches to humerus; slender; antennomere 1 incrassate, clavate, elongate; 2-3 transverse, projection on inner apical angle; 2 ¼ length of 1, shortest; 3-4 subequal; 5-10 transverse, subequal in length; 11 rounded at apex, 2 × length of 10; 1-3 punctate with scattered setae; 4-11 setose. Pronotum: quadrate; lateral margin straight then rounding to anterior angle, margined; anterior angle rounded, not produced; posterior angle acute; anterior margin straight; disc flattened; surface impunctate; basal impression absent; pronotal length 1.0-1.3 mm; pronotal width 1.3-1.7 mm. Scutellum: triangular; impunctate. Elytron: lateral margin straight, smooth, margined; apex rounded; sutural angle without tooth; humerus rounded, not produced; slightly constricted behind humerus; shallowly punctate-striate, rows obsolete at apex; elytral length 4.1-5.1 mm; elytral width 1.7-2.1 mm. Venter: pro-, meso-, and metasterna impunctate medially, punctate laterally; abdominal sterna punctate, each puncture with pale seta; suture between sterna 1 and 2 complete. Leg: robust, short; femur punctate; tibia with spoon-like depression at apex, tuft setae on inner margin. Total length: 5.7-7.1 mm.

Diagnosis.

This species is similar to Cephaloleia belti , Cephaloleia consanguinea , Cephaloleia erugatus , Cephaloleia semivittata , Cephaloleia variabilis , and Cephaloleia vicina . It can be distinguished by the elytral puncture rows being obsolete apically, by the impunctate pronotum, and by the pro-, meso-, and metasterna being punctate laterally.

Distribution.

Costa Rica.

Type material examined.

Holotype: Est. Hitoy Cerere, 100 m, R. Cerere, Res/ Biol. Hitoy Cerere, Prov. Limon, Costa Rica, E. Lopez, 28-12 abr 1992, L-N 184200, 643300/ COSTA RICA, INBIO, CR1000, 375730 [reversed white label with bar code]/ HOLOTYPE Cephaloleia triangularis Staines, Des. C. L. Staines 1994 [red label] (INBIO).

Specimens examined.

COSTA RICA: Cartago- Ref. Nac. Fauna Silv. Tapantí, 1650 m, Represa Río Gde. de Orosí, August 1991 (INBIO). Guanacaste- La Palma, 30 April 1928 (USNM); R. Sn. Lorenzo, 1050 m, Tierras Morenas, R. F. Cord., October 1991, November 1991 (INBIO). Limón- Est. Hitoy Cerere, 100 m, R. Cerere, Res. Biol. Hitoy Cerere, May 1991, July 1991, 4-20 December 1991, 5-19 March 1992, 30 June- 20 July 1992 (INBIO, USNM); Valle La Estrella, 100-200 m (INBIO). Puntarenas- Est. Sirena, Corcovado N. P., 0, 100 m, February 1990 (INBIO). Total: 22.