Cenophengus magnus Zaragoza-Caballero, 1988

Fig. 15A-H

Cenophengus magnus Zaragoza-Caballero, 1988: 651.

Type locality.

Mexico.

Type material.

Holotype ♂: "Nuevo Leon, Mexico (92°44'N; 99°56'W), 16 de Julio de 1979, 1 800 m, Col. D.C. Darling" | CUIC.

Remarks.

Cenophengus magnus is sister to C. major (Vega-Badillo et al. 2021b), but can be distinguished by the elytral length and r3 vein. In C. magnus, each elytron is 4 times as long as wide, whereas in C. major, they are almost 4.5 times as long as wide; the r3 vein is absent in C. magnus, whereas in C. major, it is present.

Diagnosis.

Integument smooth, antennae long, more than twice the length of pronotum antennal rami, 3 times the respective antennomere, scutellum almost quadrangular, with small notch on posterior margin and each elytron 4 times as long as wide, with one longitudinal costa; aedeagus with three teeth at the inner apex of paramere.

Redescription.

Male. Body length 11.0-12.0 mm; maximum body width 1.74-1.80 mm (pronotum). Body brown, except for head, pronotum and scutellum yellow-orange; antennae and buccal parts dark brown (Fig. 15A, B). Head. Wider (1.30-1.35 mm) (1.325 ± 0.035 mm, n = 2) than long (0.75-0.80 mm) (0.77 ± 0.035 mm, n = 2) (Fig. 15C), at eye level, less wide than the pronotum, integument smooth, punctures 2.5 times as long as eye facets and separated by approximately 0.5 punctured diameters, each puncture bearing a yellow-orange seta; interantennal distance (0.14-0.16 mm) (0.15 ± 0.014 mm, n = 2) less than the length of antennomere 1 (0.31-0.34 mm) (0.325 ± 0.021 mm, n = 2); eyes 3/4 as long as head in lateral view, longer (0.55-0.6 mm) (0.57 ± 0.035 mm, n = 2) than wide (0.3-0.35 mm) (0.325 ± 0.035 mm, n = 2); interocular distance (0.65-0.7 mm) (0.675 ± 0.035 mm, n = 2) 1.9 times eye width; antennae long (4.02-4.27 mm) (4.14 ± 0.176 mm, n = 2) more than twice the length of pronotum; antennomere 1 (0.31-0.34 mm) (0.325 ± 0.021 mm, n = 2) longer than next two combined, antennomere 3 cup-shaped, 4 (0.30-0.33 mm) (0.315 ± 0.3 mm, n = 2) shorter than following antennomeres, 5 to 11 about equal in length (0.38-0.40 mm) (0.39 ± 0.014 mm, n = 2), 12 (terminal) (0.50-0.55 mm) (0.525 ± 0.035 mm, n = 2), antennal rami lanceolate in lateral view, 3 times the respective antennomere; terminal maxillary palpomere robust, securiform (0.35-0.40 mm) (0.375 mm ± 0.035 mm, n = 2), twice as short as the preceding three combined; terminal labial palpomere spindle-shaped (0.16-0.17 mm) (0.165 ± 0.007 mm, n = 2), 3 times as long as preceding one (0.05-0.07 mm) (0.06 ± 0.014 mm, n = 2). Thorax. Pronotum longer (1.9-2.0 mm) (1.95 ± 0.070 mm, n = 2) than wide (1.74-1.80 mm) (1.77 ± 0.042 mm, n = 2) (Fig. 15D); integument smooth, punctures twice as large as eye facets and separated by approximately 1 punctured diameter, each puncture bearing a yellow-orange seta, convex disc, weakly elevated dorsally forming a small depression in the basal part of each side, posterior margin curved, sides almost straight, anterior and posterior angles rounded; mesosternal suture incomplete; scutellum with small notch on posterior margin; each elytron 4 times as long (4.52-4.80 mm) (4.66 ± 0.197 mm, n = 2) as wide (1.1-1.2 mm) (1.15 ± 0.070 mm, n = 2), convex, with one longitudinal costae, elytral apex rounded; hind wings with posterior radial vein (RP) length twice less than the length of MP1+2, radial cell closed, r3 vein absent, r4 vein developed (reaching the RP and the radial cell), those of the anterior anal and posterior anal sectors, evident (Fig. 15E). Legs: tarsomeres 1 and 2 of the prothoracic legs with a similar length and tarsomere 1 of meso- and metathoracic legs is longer than 2. Abdomen. Integument shiny, punctured, with long dense setae, sternite 7 with margin concave, sternite 8 with margin rounded; aedeagus with three teeth at the inner apex of paramere (Fig. 15F-H).

Female and immatures.

Unknown.

Distribution.

Mexico: Nuevo León and Tamaulipas (Fig. 3).

Additional material examined.

" Mexico: Tamaulipas / Gómez Farías km 7 a Julilo / 13-IV-2003 / I. Pacheco L. Cervantes " " Cenophengus / Cenophengus magnus / S. Zaragoza C. det." (2) | CNIN .