Cephaloleia stenosoma Baly, 1885

Staines, Charles L. & Garcia-Robledo, Carlos, 2014, The genus Cephaloleia Chevrolat, 1836 (Coleoptera, Chrysomelidae, Cassidinae), ZooKeys 436, pp. 1-355 : 249

Taxon classification Animalia Coleoptera Chrysomelidae

Cephaloleia stenosoma Baly, 1885 Fig. 239

Cephaloleia stenosoma Baly 1885: 19. Baly 1886: 120 (noted); Blackwelder 1946: 720 (catalog); Papp 1953: 22 (catalog); Uhmann 1957a: 25 (catalog); Descarpentries and Villiers 1959 a: 139 (types); Wilcox 1983: 137 (catalog); Staines 1996: 61 (Central America species), 1999: 242 (mimicry), 2004: 312 (host plants), 2010: 36 (types); Staines and Staines 1997: 21 (types), 1999: 524 (Baly species list); McKenna and Farrell 2005: 121 (phylogeny), 2006: 10949 (phylogeny).

Cephalolia stenosoma Baly. Donckier 1899: 551 (catalog); Weise 1911a: 9 (catalog), 1911b: 10 (catalog); Calvert and Calvert 1917: 394 (noted); Uhmann 1930a: 221 (faunal list), 1936b: 483 (key).

Cephalolia stenosoma biolleyi Pic 1926a: 9 (type: Costa Rica, MNHN, not seen).

Cephaloleia stenosoma biolleyi Pic. Blackwelder 1946: 720 (catalog); Papp 1953: 22 (catalog); Uhmann 1957a: 25 (catalog); Descarpentries and Villiers 1959 a: 139 (types).

Description.

Large, elongate; subparallel; subconvex; head (except frons reddish-yellow), antennae, and scutellum black; pronotum reddish-yellow, often with variable black markings; elytra varies from entirely reddish-yellow, to variable black markings, to entirely black; venter with prosternum red; meso- and metasterna red medially, black laterally, abdominal sterna black; leg with femur pale basally, dark apically, tibiae and tarsi darker. Head: vertex impunctate, with longitudinal Y-shaped medial carina; frons finely punctate, not projecting; not depressed between eyes. Antenna: reaches to humerus; slender; antennomere 1 elongate, robust, clavate, longer than 2 and 3 combined; 2 ovate; 3 longer than 2, compressed, triangular; 4-10 transverse, decreasing in length; 11 2 × length of 10, pointed at apex; 1-3 punctate with scattered setae; 4-11 setose. Pronotum: transverse; lateral margin straight then rounding to anterior angle, narrowly canaliculate; anterior angle not produced, acute; posterior angle acute; apical margin straight; disc subconvex, impunctate; surface punctate laterally; basal impression absent; pronotal length 1.3-1.5 mm; pronotal width 1.5-1.6 mm. Scutellum: acutely triangular; alutaceous. Elytron: lateral margin straight, smooth, margined; apex rounded; sutural angle without tooth; humerus rounded, not produced; slightly constricted behind humerus; flattened along suture; moderately punctate-striate, punctation obsolete at humerus, rows converge and unite apically; elytral length 5.4-6.1 mm; elytral width 1.73-2.3 mm. Venter: prosternum impunctate; meso- and metasterna impunctate medially, punctate laterally; abdominal sterna punctate, each puncture with pale seta; suture between sterna 1 and 2 complete; last sternite with apical margin sinuate medially in male, truncate in female. Leg: slender; femur and tibia sparsely punctate; tibia with fringe of setae on inner margin of apex. Total length: 6.8-7.8 mm.

Diagnosis.

This species is similar to Cephaloleia instabilis . It can be distinguished by antennomere 2 being triangular, by the pronotum being uniformly punctate, and by the elytra lacking a declivity at puncture row 7.

Host plant.

Adults have been collected from Heliconia imbricata (Kuntze) Baker, Heliconia latispatha Benth. ( Staines 1996); Heliconia trichocarpa G. S. Daniels and F. G. Stiles, Heliconia wilsonii G. S. Daniels and F. G. Stiles ( Heliconiaceae ), Calathea crotalifera S. Watson ( Marantaceae ), Musa velutina H. Wendl. and Drude ( Musaceae ).

Distribution.

Costa Rica, Guatemala, Panama.

Type material examined.

Lectotype: Bugaba, 800-1,500 ft. Champion [printed label]/ B. C. A. Col. VI, 2. Cephaloleia stenosoma Baly [printed label]/ Lectotype Cephaloleia stenosoma Baly Des. C. L. Staines 1993 [printed red label] (BMNH).

Specimens examined.

COSTA RICA: no further data (MNHN). Alajuela- Río San Lorencito, 900 m, Res. For. Sn. Ramón, 5 km N Col. Palmarena, March 1990 (INBIO); Safo Dulce, Río Sandalo, Palo Seco, 10 m, 31 December 1923, 21 August 1936 (USNM). Puntarenas- Golfito, 3 July 1976 (EMEC), 22 July 1981 (FSCA); Coto Brus, Las Cruces Biological Station, 6 March 2012, 10 March 2012 (USNM); Est. Sirena, Corcovado NP, 0, 1000m, October 1989, November 1989, December 1989, January 1990, February 1990, March 1990, April 1990, October 1990, June 1991, April 1992 (INBIO); Fca. Las Cruces, San Vito de Java, 11-14 August 1969 (USNM); Est. Queb. Bonita, 50 m, Res. Biol. Carara, 4-26 January 1993 (INBIO); Rancho Quemada, Pen. Osa, November 1989, February 1991, November 1991, 21 March- 7 April 1992, October 1992, November 1992, 1-21 December 1992 (INBIO); Osa Peninsula, 2.5 mi. SW Rincón, 5 March 1967 (CMNC); 3.5 mi. S. Rincón, 28 February- 12 March 1969 (CASC); Río Claro, sea level, 19 August 1969 (USNM); Río Piedras, sea level, 15 August 1969 (USNM); San Vito de Java, 20 July 1972 (FSCA); 6 mi. S. San Vito, 27 June 1969 (USNM); Garabito, Tarcoles, Estación Quebrada Bonita, 100-200 m (INBIO); Estación Esquinas, Peninsula de Osa, 0-100 m (INBIO). GUATEMALA: Zacapa- 4-6 km S La Unión, 4600 feet, 2-11 June 1991 (FSCA); 3 km SE La Union, 1500 m, 23 June 1993 (CMNC). PANAMA: Chiriquí- Bugaba, 800-1,500 ft. (AMNH, USNM). Colón- Gamboa, 22 June 1975, 18 June 1976 (EGRC). Panamá- Ancón, August 1937 (CASC); La Pita Signal Station Rd., 6 February 1971, 27 February 1971, 18 May 1980 (EGRC); Madden Forest, February 28, 1971, 27 March 1971, 28 June 1976 (EGRC); Pedro Miguel, 17 April 1911 (USNM); Summit, November 1946 (USNM). Total: 125.