Cenophengus baios Zaragoza-Caballero, 2003

Vega-Badillo, Viridiana, Morrone, Juan J. & Zaragoza-Caballero, Santiago, 2021, Revision of the genus Cenophengus LeConte, 1881 (Coleoptera, Phengodidae), with the description of four new species, new geographic records and a new synonymy, ZooKeys 1068, pp. 73-148 : 73

Cenophengus baios Zaragoza-Caballero, 2003

Fig. 4A-H

Cenophengus baios Zaragoza-Caballero, 2003: 159.

Type locality.

Jalisco, Mexico.

Type material examined.

Holotype ♂: "MEXICO: Jalisco/ Est. Biol. Chamela 7/ Cuenca 1 TM. / 3-8- VIII-1992/ Trampa Malaise 237/ Col. A. Rodríguez” | CNIN. Paratype ♂: "MEXICO: Jalisco/ San Buenaventura/ 3-8-VI-1992 Alt. 720 m/ 19°47.6' N 104°03.32' O/ Trampa Malaise 4" "Cols. V.H. Toledo/ M.E. Guardado, A. Soria/ S. Zaragoza, L.F. Novelo/ E. Ramírez, M.A. Sarmiento" | CNIN; Paratype ♂: " MEXICO: Jalisco/ Estación Biológica Chamela/ 13-XI-1987 en hojarasca/ R. Terron" | CNIN.

Remarks.

Cenophengus baios is morphologically similar to C. huatulcoensis , but can be distinguished by the antennal rami length, interantennal and interocular distances. In C. baios , the interantennal distance is shorter than the length of the antennomere 1, whereas in C. huatulcoensis , it is equal. The interocular distance is 3.5 times eye width in C. baios and in C. huatulcoensis , it is 3 times longer. Additionally, in C. baios , the antennal rami are as long as the respective antennomere, whereas in C. huatulcoensis , they are twice as long as the respective antennomere.

Diagnosis.

Integument smooth, antennae less than twice the length of the pronotum, antennal rami as long as the respective antennomere, pronotum as long as wide, each elytron 2.7 times as long as wide and branching of the anterior cubital veins (CuA) absent in the hind wing; aedeagus with three teeth at the inner apex of paramere.

Redescription.

Male. Body length 3.8-4.0 mm: maximum body width 0.50-0.52 mm (pronotum). Body pale brown, except for head which is dark brown (Fig. 4A, B ). Head. Wider (0.49-0.56 mm) (0.52 ± 0.022 mm, n = 10) than long (0.33-0.40 mm) (0.35 ± 0.019 mm, n = 10) (Fig. 4C ), at eye level, as wide as the pronotum, integument smooth, punctures as large as eye facets and separated by approximately 2 punctured diameters, each puncture bearing a yellow-orange seta; interantennal distance (0.06-0.10 mm) (0.67 ± 0.013 mm, n = 10) less than the length of antennomere 1 (0.10-0.13 mm) (0.11 ± 0.013 mm, n = 10); eyes 1/2 as long as head in lateral view, longer (0.16-0.23 mm) (0.19 ± 0.024 mm, n = 10) than wide (0.08-0.11 mm) (0.95 ± 0.014 mm, n = 10); interocular distance (0.30-0.35 mm) (0.33 ± 0.016 mm, n = 10) 3.5 times eye width, slightly excavated; short antennae (1.09-1.36 mm) (1.15 ± 0.085 mm, n = 10) less than twice the length of the pronotum; antennomere 1 (0.10-0.13 m) (0.11 ± 0.013 mm, n = 10) as long as the next two combined, 3 cup-shaped, from 4 to 11 about equal in length (0.1-0.12) (1.05 ± 0.0084, n = 10), 12 (terminal) (0.10-0.15 mm) (0.12 ± 0.017 mm, n = 10), antennal rami lanceolate in lateral view, as long as the respective antennomere; terminal maxillary palpomere securiform (0.13-0.15 mm) (0.14 ± 0.006 mm, n = 10), as long as the preceding three combined; terminal labial palpomere spindle-shaped (0.05-0.07 mm) (0.06 ± 0.004 mm, n = 10), 3 times as long as preceding one (0.02-0.03 mm) (0.21 ± 0.003 mm, n = 10). Thorax. Pronotum as long (0.55-0.60 mm) (0.58 ± 0.020 mm, n = 10) as wide (0.50-0.55 mm) (0.52 ± 0.020 mm, n = 10) (Fig. 4D ); integument smooth, punctures smaller than eye facets and separated by approximately 1 punctured diameter, each puncture bearing a yellow-orange seta, disc convex, with a longitudinal carina in posterior portion of pronotum strongly visible, with a length exceeding the median length of the pronotum, weakly elevated dorsally forming a small depression in the basal part of each side and a posterior margin curved with middle notch, sides almost straight, anterior and posterior angles rounded; mesosternal suture complete; scutellum with posterior margin rounded; each elytron 3.1 times as long (0.82-1.0 mm) (0.90 ± 0.071 mm, n = 10) as wide (0.26-0.34 mm) (0.29 ± 0.028 mm, n = 10), convex, without longitudinal costae, elytral apex rounded; hind wings with posterior radial vein (RP) length 4.7 times less than the length of MP1+2, radial cell closed, r3 and r4 veins absent, those of the anterior anal and posterior anal sectors, absent (Fig. 4E ). Legs: tarsomere 1 of pro-, meso- and metathoracic legs is longer than 2. Abdomen. Integument shiny, punctured, with long dense setae, sternite 7 with margin sinuate, sternite 8 with margin notched; aedeagus with three teeth at the inner apex of paramere (Fig. 4F-H ).

Female and immatures.

Unknown.

Distribution.

Mexico: Jalisco and Colima (Fig. 3 ).

Additional material examined.

" MEXICO. Jalisco, San Buenaventura / 19° 47'.614" N 104° /03'.324" O. Alt. 720 m / TL 3 09-02-1997 / Cols. F. A. Noguera, S. / Zaragoza, E. Ramírez y / E. González” (1) | CNIN ; “MÉXICO; “MÉXICO.

Figures

Figure 3. Map of southern North America showing specimen localities for Cenophengus spp.

Figure 4. Cenophengus baios Zaragoza-Caballero, 2003, male. Habitus: A dorsal B ventral C head dorsal D pronotum dorsal E hind wing. Wing venation: CR = Radial Cell; RP = Posterior Radial vein; MP 1 + 2 = Posterior Median vein; CuA = Cubital vein; AP = Posterior Anal vein. Aedeagus: F dorsal view G lateral view H ventral view.