Cenophengus tupae sp. nov. ( Figs. 23–27) Etymology. The term Tu-pae means mud in the Pame language (Xi’úi), which is spoken in Tamosopo, San Luis Potosí, Mexico. This term refers to the color of the body in the new species. Diagnosis. Cenophengus tupae is similar in appearance to Cenophengus wittmeri Zaragoza, 1984, but can be distinguished by its shorter size, interocular distance and the terminal maxillary palpomere. In C. tupae interocular distance is 2.5 times longer than eye width, whereas in C. wittmeri it is twice longer than eye width. The terminal maxillary palpomere is shorter than the preceding three combined in C. tuape, whereas in C. longicollis it is as long as the preceding three combined. Additionally in C. tupae the antennal rami is three times as long as respective antennomere, whereas in C. wittmeri it is twice longer than the respective antennomere. Description, male. Total body length 5.2 mm; total body width 0.6 mm. Brown body, except for the antennae and a stripe on the pronotum that are amber colored (Figs. 23, 24). Head. Surface concave, wider (0.6 mm) than long (0.4 mm), measured dorsally to exterior margins almost as wide (0.6 mm) as the pronotum (0.62 mm), integument chagrined, coarsely punctuate, each puncture bearing an amber seta; interantennal distance a third of 1 st antennomere length (0.05 mm); medium sized eyes, hemispherical prominent, finely faceted, longer (0.3 mm) than wide (0.25 mm); interocular distance greater than the eyes length (0.4 mm); long antennae (1.6 mm) extending beyond pronotal posterior margin; 1 st antennomere (0.16 mm) longer than the next two combined, 3 rd cup-shaped, 4 th in length (0.12 mm), 5 th to 11 th about equal in length (0.15 mm), 12 th (terminal) lanceolate (0.15 mm); antennal rami lanceolate, three times longer than respective antennomere; anterior border of frons concave; clypeus bilobed; terminal maxillary palpomere securiform, as long as the preceding two combined (0.25 mm); terminal labial palpomere spindle-shaped, three times longer than the preceding. Thorax. Pronotum longer (0.72 mm) than wide (0.6 mm); tegument chagrined, coarsely punctuate; each puncture bearing an amber seta, convex disc, with two longitudinal excavations one on each side of the midline, anterior border concave, the posterior almost straight with a middle notch, lateral margins almost parallel, anterior angles rounded and posterior angles acute; scutellum almost quadrangular, posterior border truncated, shiny integument, thickly dotted, each puncture with an amber colored seta; elytra almost four times as long (1.9 mm) as wide (0.46 mm), convex; hindwings with radial cell closed, r3 vein present, r4 vein developed, the posterior radial vein (RP) reduced (length less than half the size of the vein MP1+2), medial field containing six main veins: MP3, MP4, CuA1, CuA2, CuA3+4, and AA 3+4; CuA and AA well marked and cubitoanal cell closed, AP3+4 long; 1 st and 2 nd tarsomeres of prothoracic legs about equal in length, 1st tarsomere of meso- and metathoracic legs longer than 2nd. Abdomen. Integument shiny, punctured, densely setose, penultimate sternite with posterior margin sinuate, last sternite cleft. Aedeagus: with one tooth at the apex of paramere (Figs. 25–27). Immatures and females. Unknown. Distribution: San Luis Potosí, Mexico (Fig. 17). Type material. Holotype (male) ( COL-TIP-03594): Mexico, San Luis Potosí,/ Tamasopo. Cerro al noroeste/ del cafetal, 01-06-15, N 21°55.47’ / W 99°24.95’ Col./ Jessica Ríos. Paratype ( COL-TIP-03595): male, same data. Deposited at CNIN.

Published as part of 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, pp. 223-238 in Zootaxa 5023 (2) on page 233, DOI: 10.11646/zootaxa.5023.2.3, http://zenodo.org/record/5225824

{"references": ["Zaragoza Caballero, S. (1984) Descripcion de dos especies nuevas y nuevos registros de Cenophengus (Coleoptera: Phengodidae; Mastinocerini). Anales del instituto de Biologia de la Universidad Nacional Autonoma de Mexico, Serie Zoologia, 55 (1), 203 - 208."]}