Cymatodera fata Rifkind, 2020

Cymatodera fata Rifkind , new species

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( Figs. 3 View Figs , 33, 34 View Figs )

Specimen Examined. Holotype male: Mexico, Jalisco, Hwy. 80, Bellavista, vic. Acatlan de Juarez , 1300 m, July 3, 1993, J. & E. Beierl, colls. ( CSCA).

Description ( Holotype). Length: 14 mm. Form: Elongate; elytra subparallel. Color: Light brown; head, pronotum and venter dark brown; mouthparts, antennae, and tarsi reddish brown; each elytron with a very faintly indicated, small, elongate/ovate testaceous macula at humerus, and a similarly faint transverse/subsinuate testaceous fascia at middle. Head: About as wide across as pronotum at its maximum width; surface moderately densely and finely punctate and rugulose, sparsely setose; antenna moderately elongate, loosely composed; antennomere 2 approximately 1/2 the length of 3; antennomeres 4–10 subequal in length, conical; antennomere 11 a little longer than 10, apex narrowed, rounded; eye moderate in size. Pronotum: Elongate (almost 2× as long as wide), subflattened on disc above; surface shining; integument shallowly, transversely rugulose and irregularly punctate, rather sparsely set with anteriorly directed, fine, pale setae, intermixed with longer, more robust, suberect, pale setae. Elytra: Elongate (ratio of length to combined width 2:1); sides subparallel, arcuately convergent posteriorly to separately rounded, slightly dehiscent apices; dorsum broadly subflattened; integument shining, moderately densely but inconspicuously covered with short, fine, reclinate, pale testaceous setae, and fewer, somewhat longer and more robust, erect testaceous setae; punctures arranged in longitudinal rows, coarse and rather deep anteriorly but progressively smaller and more shallow posteriorly; punctures in first 3 rows (counting from suture) obsolete beyond median. Metaventrite: Shining, very finely punctulate, very sparsely setose; posterior with a bilateral pair of small, shallow tubercles. Abdomen: Ventrites 1–4 shining; surface shallowly, finely punctulate and sparsely setose; ventrite 5 ( Fig. 33 View Figs ) with surface more densely punctate and roughened, hind margin arcuately emarginate; ventrite 6 ( Fig. 33 View Figs ) with sides gently arcuate, hind margin shallowly arcuately emarginate, posterior angles slightly produced, their apices obtuse, surface roughened, a little tumid at middle, each side bearing an obscure, slightly arcuate carina originating just beyond anterior margin and extending posteriorly to apex of hind angle; tergite 6 ( Fig. 34 View Figs ) narrower than ventrite 6 in dorsal view, sides subsinuate and slightly convergent posteriorly, posterior margin strongly trifid, processes concave ventrally.

Variation. Only the holotype was available for study.

Etymology. The specific name honors Michael Fata, a friend and benefactor. It is treated here as a noun in apposition.

Distribution. The new species is known from Jalisco, Mexico.

Biology. Cymatodera fata was collected during July, which is the rainy season in west-central Mexico.

Diagnosis. Cymatodera fata is nearly identical in facies to C. kolbei Schenkling , with which it is sympatric. They may, however, be easily distinguished by the shape of the male pygidium: The 6th abdominal tergite is trifid posteriorly in C. fata , whereas it is deeply inflected at middle in C. kolbei , resulting in only two lateral projections posteriorly (see Rifkind 2015: figs. 1–3).