Cymatodera rosalinae Burke

Burke, Alan F., 2013, Six new species of Cymatodera from Mexico and Central America and the retention of Cymatodera obliquefasciata as a valid name (Cleridae, Tillinae), ZooKeys 299, pp. 49-75 : 51-55

Cymatodera rosalinae Burke sp. n. Figs 1, 9, 10, 20, 24, 31, 38, 45, 52

Type material.

Holotype: male, México, Jalisco, Estación Biológica Chamela UNAM, 80 m, 19-VII-1993, J. E. Wappes, red handwritten label, holotype deposited USNM. Paratypes: 27 males, 25 females. 11 males and 11 females: same data as holotype (CNIN, 6; JEWC, 6; KSUC, 2; RGCG, 4; TAMU, 4); 1 male and 2 females: México, Jalisco, Costa Careyes, at light, tropical deciduous forest, 7-VII-1991, J. Rifkind and P. Gum (JNRC, 3); 1 female: México, Jalisco, carretera no. 200, Costa Careyes, blacklight, tropical deciduous forest, 6-VII-1993, J. & E. Beierl (TAMU, 1); 6 males and 4 females: México, Jalisco, Estación Biológica Chamela UNAM, 9 to 19-VII-1993, J. Huether (FSCA, 2; CNIN, 2; TAMU, 2; WOPC, 3; JNRC, 1); 8 males and 5 females: México, Jalisco, municipio de La Huerta, Estación Biológica Chamela UNAM, 9 to 19-VII-1993, Morris, Huether and Wappes (RHTC, 4; JNRC, 4; USNM, 4; WOPC, 1); 1 male and 1 female: México, Jalisco, Estación Biológica Chamela, 3 to 4-VIII-1994, R. L. Westcott (WFBC, 2); 1 female: México, Jalisco, Chamela, 7-VII-1990, F. A. Noguera (CNIN, 1).

Description.

Size: TL= 12.5 mm, length of males: 8.8 - 13.5 mm, length of females 9.8 - 15.2 mm, n = 53 (Fig. 1).

Color: head and pronotum fuscous-brown; rest of the body uniformly brown. Each elytron with a pair of median, slightly oblique, pale fascia that extends from elytral suture to epipleuron.

Head: HL= 2.1 mm, HW= 1.3 mm; length to width ratio: males average 1.68, females average 1.55; measured across eyes wider than pronotum; finely, rather punc tate; somewhat clothed with short, recumbent setae intermixed with less numerous, erect setae; surface rugose, except frons shiny. Eyes rather big, somewhat rounded, inconspicuously longer than wide, emarginate in front, bulging laterally, separated by approximately 2.5 eye-widths (Fig. 20). Antennae extending to base of elytra; third antennomere 2.0 × longer than preceding antennomere; antennomeres 3-10 subequal in length; antennomeres 2-4 slender; antennomeres 5-10 feebly serrate; last antennomere elongate, subacuminate, 1.5 × longer than preceding antennomere (Fig. 9).

Thorax: PL= 3.2 mm, PW= 1.9 mm; length to width ratio: males average 1.56, females average 1.62; pronotum widest at middle, middle slightly broader than anterior margin; sides constricted subapically, more strongly constricted behind middle; disc flat, indistinctly impressed in front of middle; clothed with short, recumbent setae intermixed with long, erect and suberect setae; surface somewhat rugose; slightly more densely punc tate than head; subbasal tumescences indistinctly pronounced. Mesosternum scarcely, coarsely punctate. Metasternum convex, puncticulate; covered with fine, recumbent setae. Scutellum subquadrate, notched posteriorly, covered with short, erect setae.

Legs: vested with short, recumbent setae intermixed with long, suberect setae that become more densely arranged on proximal face of tibiae; femora rugulose, moderately, finely punctate; tibiae transversely rugose, moderately, coarsely punctate, vested with short, recumbent setae intermixed with occasional semierect setae.

Elytra: EL= 7.6 mm, EW= 3.4 mm; length to width ratio: males average 2.25, females average 1.78; anterior margin bisinuate; humeri rounded; sides subparallel; base wider than pronotum; widest behind middle; disc flattened apically; apices sinuate, feebly dehiscent; surface feebly rugose; vestiture composed of short, semirecumbent setae intermixed with less numerous, long, erect and semierect setae; sculpturing consisting of small, coarse punctations arranged in striae that gradually reduce in size behind middle; interstices smooth, 4.0 × the width of punctation.

Abdomen: ventrites 1-5 rugulose, vested with short, recumbent setae and some long, semierect setae. First visible ventrite indistinctly, finely punctate; ventrites 2-5 densely, finely punctate. Fifth visible ventrite convex; lateral margins oblique; posterior margin broadly, rather deeply, semicircularly emarginate (Fig. 24). Sixth visible ventrite subquadrate; surface somewhat excavated medially, convex laterally; rather punctate; rugulose; covered with short recumbent setae; lateral margins oblique; posterior margin broadly, moderately deeply, arcuately emarginate; hind angles rounded (Fig. 24). Fifth tergite slightly convex; finely punctate; rugulose; posterior margin broadly, shallowly, arcuately emarginate (Fig. 38). Sixth tergite subrectangular; rugulose; surface convex; broader than long; moderately, finely punctate; inconspicuously covered with short, recumbent setae; lateral margins oblique; posterior margin broadly, shallowly emarginate; hind angles arcuate (Fig. 38). Posterior margin of sixth tergite fully covering sixth visible ventrite. Aedeagus 2.25 mm long, robust, ratio of length of paramere to whole tegmen 0.28: 1; parameres rather prominent, subparallel, pointed distally, phallobase wide; phallus with copulatory piece tapered at apex, phallic plate with a row of large, sclerotized denticles along dorsal margin; phallobasic apodeme and endophallic struts broad, somewhat dilated distally (Fig. 52).

Variation.

Female specimens differ from males in the following respects: antennal serration somewhat more evident (Fig. 10); elytral margins less parallel, rendering a somewhat more robust appearance; posterior margin of fifth visible ventrite broadly, shallowly,arcuately emarginate (Fig. 31); sixth visible ventrite subtriangular, lateral margins strongly oblique, almost confluent apically, posterior margin rather acuminate (Fig. 31); posterior margin of fifth tergite narrowly, moderately emarginate (Fig. 45); sixth tergite semicircular, lateral and posterior margins broadly rounded (Fig. 45); sixth tergite fully covering sixth visible ventrite. Pronotum and elytral ground color rather inconsistent in both sexes, ranging from testaceous to fuscous-brown. Midelytral fascia variably marked, almost imperceptible in some specimens. Some individuals possess an irregular, midelytral black band ranging in size from a complete fascia, to a pair of inconspicuous maculae on each side of elytra.

Differential diagnosis.

Distinguishable from congeners based on its size, antennal shape, midelytral marking, terminal abdominal segments and male genitalia. This species appears most similar to the allopatric species Cymatodera obliquefasciata . Color, form, elytral sculpturing, median pale fascia and serrate condition of antennae are characters shared by Cymatodera rosalinae (Fig. 1) and Cymatodera obliquefasciata (Fig. 7). This new species can be separated from the latter based on the following respects: Cymatodera rosalinae has the antennomeres 2-4 slender, antennomeres 5-10 transversally robust in dorsal view and somewhat serrate (Fig. 9), due to sexual dimorphism, serrate condition of female specimens is somewhat more evident (Fig. 10), last antennomere internally sinuate, and humeral maculae absent. Cymatodera obliquefasciata has the antennomeres 1-3 slender, antennomeres 4-10 transversally slender in dorsal view and boldly serrate (Fig. 16), and humeral maculae variably marked to absent. In addition, the moderately incised and arcuately emarginate posterior margin of the sixth visible ventrite in male specimens of Cymatodera rosalinae (Fig. 24) is absent in males of Cymatodera obliquefasciata (Fig. 30). The female of Cymatodera rosalinae (Figs 31, 45) can be distinguished from females of Cymatodera obliquefasciata (Fig. 37, 50) by the distinctive shape of its abdominal terminalia.

Distribution.

Known from the vicinity of the Chamela Biological Station, situated in the Chamela-Cuixmala region, on the western portion of Jalisco, Mexico.

Etymology.

I am very pleased to name this new species in honor of my mother, Rosalina Roco, a cornerstone in my life, and a person whose endless efforts have been of inspirational support during my professional career.