Cenophengus mumui, Vega-Badillo & Zaragoza-Caballero & Ríos-Ibarra, 2021

Vega-Badillo, Viridiana, Zaragoza-Caballero, Santiago & Ríos-Ibarra, Jessica Jazmín, 2021, New species of the genus Cenophengus LeConte 1881 (Coleoptera; Phengodidae) from Mexico and Guatemala, Zootaxa 5023 (2), pp. 223-238 : 231

Cenophengus mumui sp. nov.

(Figs. 18–22)

Etymology. The term Mumui means sand in the Pame language (Xi’úi) which is spoken in Tamosopo, San Luis Potosí, Mexico. This term refers to the sandy color of the body in the new species.

Diagnosis. Cenophengus mumui is similar in appearance to Cenophengus munizi Zaragoza-Caballero 2008 . These two species can be differentiated by the shape and color of the head, which is square and brown in the new species, while C. munizi exhibits a rectangular shaped head, which is amber colored like the rest of the body. Additionally, in C. mumui the antennal rami are 1.5 times as long as respective antennomere, whereas in C. munizi they are twice as long as respective antennomere.

Description, male. Total length 3.5 mm; total width 0.58 mm. Yellow body, except for the head which is brown colored (Figs. 18, 19).

Head. Surface concave, wider (0.61 mm) than long (0.49 mm), measured dorsally to exterior margins almost wider (0.61 mm) than the pronotum (0.58 mm), integument smooth, coarsely punctuate, each puncture bearing an amber seta; interantennal distance longer than half of 1 st antennomere length, (0.1 mm); small eyes, hemispherical, prominent, finely faceted, longer (0.2 mm) than wide (0.15 mm); interocular distance greater than the eyes length (0.36 mm); antennae (1.8 mm) extending beyond pronotal posterior margin; 1 st antennomere (0.15 mm) as long as next two combined, 3 rd cup-shaped, 4 th in length (0.12 mm), 5 th to 11 th about equal in length (0.17 mm), 12 th (terminal) lanceolate (0.25 mm), antennal rami lanceolate, one and a half times longer than respective antennomere; anterior border of frons concave; clypeus bilobed; terminal maxillary palpomere robust and securiform, as long as the preceding three combined (0.16 mm); terminal labial palpomere cylindrical (0. 05 mm) and two times longer than the preceding.

Thorax. Pronotum as long (0.58 mm) as wide (0.56 mm); tegument smooth, coarsely punctuate; each puncture bearing an amber seta, convex disc, with one longitudinal excavation on each side of the midline, anterior border concave, posterior almost straight with a middle notch, lateral margins almost parallel, anterior and posterior angles rounded; scutellum almost quadrangular, posterior border truncated, shiny integument, thickly dotted, each puncture with an amber seta; elytra almost four times as long (1.62 mm) as wide (0.37 mm), convex; hindwings with radial cell closed and slightly defined, r3 and r4 veins absent, the posterior radial vein (RP) reduced (length less than half the size of the vein MP1+2), those of the anterior anal and posterior anal sectors, absent, only AA well marked, AP3+4 short.; 1 st and 2 nd tarsomeres of pro-, meso- and metathoracic legs about equal in length.

Abdomen. Integument shiny, punctured, densely setose, penultimate sternite with posterior margin sinuate, last sternite cleft. Aedeagus: with three teeth at the apex of paramere (Figs. 20–22).

Immatures and females. Unknown

Distribution: San Luis Potosí, Mexico ( Fig. 17 ).

Type material. Holotype (male) (COL-TIP-03596): Mexico, San Luis Potosí,/ Tamasopo. Cerro al noroeste/ del cafetal, 01-06-15, N 21°55.47’ / W 99°24.95’ Col./ Jessica Ríos. Deposited at CNIN.

Figures

FIGURE 17. Distribution of Cenophengus (Continued)