Ogdoecosta juvenca Boheman 1854
Creators: name: López-Pérez, Sara
name: Zaragoza-Caballero, Santiago
name: Chaboo, Caroline S.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Ogdoecosta
Ogdoecosta juvenca

description: Ogdoecosta juvenca (Boheman 1854)
(Figs 12 A–G)
Chelymorpha juvenca Boheman 1854:84
Male. Length 7.7–10.2 mm, width 6–8 mm (n=10). Black, pubescent.
HEAD. Surface black, rugose, supraorbital area punctate; frons with scattered long setae. Prosternum smooth, pubescent. Genal surface with punctures and short setae. Interocular width 2 times diameter of eyes. Antennae short reaching pronotal base; antennomere III longer than IV, antennomere I shorter than XI. Clypeus subtrapezoidal in shape, over 2 times wider than long, surface with sparse punctures and scattered setae, Labrum over 3 times wider than long; surface smooth.
THORAX. Pronotum 2–3 times wider than long; surface pubescent, black; anterior margin emarginated, margination U-shaped; base sinuous; hind angles sharp and produced behind with fine punctures; explanate margin with coarse punctures; pronotal disc with distinctive longitudinal groove. Scutellum triangular, surface smooth, black. Elytral surface pubescent, black with variable orange spots; elytron with four, two or no spots (Figs 12 F–G); punctures moderately coarse; humeri rounded, surface pubescent, punctate, black. Prosternal process pubescent, grooved at base, apex rounded. Mesosternal process deeply notched.
ABDOMEN. Ventrites surface pubescent, black. Aedeagus length less than 2 mm, apex acute (Fig. 20 C).
Female. Similar to male. Length 11–12.5 mm, width 7.5–8 mm (n=15). Interocular width 2 times diameter of eyes. Clypeus over 2 times wider than long. Labrum over 3 times wider than long. Pronotum 2–3 times wider than long. Spermatheca partially sclerotized (Fig. 20 C), less than 2 times longer than wide; apex acute, with velum; spermathecal duct weakly coiled.
Comparative note. This species is distinguished from O. epilachnoides by its sub-trapezoidal clypeus, the pronotal groove, the elytra pubescent, and spermathecal duct weakly coiled (Fig. 20 C).
Remarks. Champion (1893:154) mentioned that O. juvenca was “apparently peculiar to the eastern and southern part of Mexico” but we recorded it in the central-north of Mexico (San Luis Potosí).
Chelymorpha cruxnigra Boheman (Fig. 13 A–C) has been considered as a synonym of O. juvenca (Borowiec & Świętojańska 2016). Based on his text, Champion (1893:155) saw a specimen in the BMNH’s Hamlet Clark Collection (“doubtless the type ”) which he considered as a variety of O. juvenca. However, the type specimen (Fig. 13 A–C) from BMNH has the diagnostic characters of Chelymorpha —an antennal groove and a deep groove on the prosternal process. Thus, Sekerka (2016) has restored its species status in Chelymorpha; however, we have examined the specimens deposited in the Manchester Museum determined by Spaeth as O. juvenca var. cruxnigra and we have determined that these specimens belong to the genus Ogdoecosta.
Host plant. Unknown.
Known distribution. México: Hidalgo, Oaxaca, and Veracruz. Costa Rica: Cartago (Borowiec & Świętojańska 2016).
Type material examined. Lectotype (des. L. Borowiec) (NHRS) (Figs 12 A–C). México, No locality. Paralectotype (IZPAS) (Fig. 12 D–E). México, No locality.
Additional material examined. 59 specimens with the following localities:
México: San Luis Potosí *: 5 mi. W Xilitla, 2400 ft., 22.VIII.1954, Universidad of Kansas Expedition (KSBS, 1); 8 mi. W Xilitla, 3200 ft., 22.VII.1954, Universidad of Kansas Expedition (KSBS, 3). Hidalgo: 4 Km. N Chapulhuacan, 2800 ft., 8.VIII.1967, H.R. Burker & J.Hafernik (TAMU, 1). Morelos *: 2 mi. S Cuernavaca, 8.VII.1962, D. H. Janzen (EMEC, 1). Puebla *: Necaxa–Tenango, 4400 ft., 1.VII.1994, G. Ortega & G. Barrera (CNIN, 1); Xilotepec de Juárez, La Unión, 14.XI.2008, H. Brailovsky (CNIN, 1); Huachinango, coll. F. C. Bowdich (MCZ, 1). Oaxaca: Dominguillo, 19.VII.1998, A. Soria (CNIN, 2 females, 1); San Pedrito, Chico Zapote, 20.VI.1998, S. Zaragoza (CNIN 4 females); Sierra Mazateca, Loma de la Plaza, 18º 03' 19.18'', 96º 44' 18.98'', 1726 msnm, 25.VI.2010, H. Alvares García (CNIN, 1); Somellin (CNIN, 1 male, 1 female); Gorhan coll., Hoege (NMNH, 1); Tomellin, IV.1899, F. A. Eddy coll., B.R. (MCZ, 7). Veracruz: Estación biológica Los Tuxtlas, 5.IV.1985, A. Ibarra (CNIN, 2 females, 3); Estación biológica Los Tuxtlas, 13.II.1985, E. Ramírez (CNIN, 1 female); Estación biológica Los Tuxtlas, 26.IV.1985, E. Ramírez (CNIN, 2 females, 1); Estación biológica Los Tuxtlas, 26.IV.1985, P. Sinaca (CNIN, 1 female); Estación biológica Los Tuxtlas, 26–27.IV.1985, C. Mayorga (CNIN, 1 female); Estación biológica Los Tuxtlas, camino a la Laguna Escondida, 8.IV.1990, C. Mayorga & G. Ortega (CNIN, 1); Estación biológica Los Tuxtlas, camino a la Laguna Escondida, 24.III.1991, C. Mayorga & G. Ortega (CNIN, 1 female, 5); Estación biológica Los Tuxtlas, camino a Monte Pio, 4/VIII/1991, C. Mayorga & G. Ortega (CNIN, 1); Estación biológica Los Tuxtlas, camino a Monte Pio, 8.IV.1990, C. Mayorga & G. Ortega (CNIN, 2); Catemaco, 17.IV.1957, (CNIN, 1); Cerro El Vigía, Santiago Tuxtla, 14.IX.1966, (CNIN, 1); Coatepec, (CNIN, 1); Las Margaritas, 6.VIII.1994, S. Zaragoza (CNIN, 1); Los Tuxtlas, 11.XI.1985, A. Ibarra & P. Sinaca (CNIN, 1 female); Los Tuxtlas, 11.XI.1985, A. Ibarra, P. Sinaca & E. Ramírez (CNIN, 1 male); 1 mi. E Córdoba, 27.VI.1962, D. H. Janzen (EMEC, 1), 3 mi. W Fortín Las Flores, 19.VIII.1965, A. Paske (EMEC, 1); San Rafael, Jicaltepec, 3.V.1896 (MCZ, 1); Córdoba, 7.VI.1966, M. R & R. C J. S. Buckett coll (EMEC, 1); Fortín de las Flores, Motel Posada Loma, 900 msnm, 30.III.1977, ex. Roy O. Kendall coll., Roy O. Kendall & C. A. Kendall (TAMU, 1). Chiapas *: km. 125 Teapa-Tuxtla Gutiérrez, 8.VII.1985, F. Arias (CNIN, 1).
description: Published as part of López-Pérez, Sara, Zaragoza-Caballero, Santiago & Chaboo, Caroline S., 2016, Revision of Ogdoecosta Spaeth 1909 with description of Ogdoecosta paraflavomaculata López-Pérez, sp. nov. (Coleoptera: Chrysomelidae: Cassidinae: Mesomphaliini), pp. 410-440 in Zootaxa 4179 (3) on page 428, DOI: 10.11646/zootaxa.4179.3.4, http://zenodo.org/record/259933