Cenophengus debilis LeConte, 1881

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 debilis LeConte, 1881

Fig. 2A-H

Cenophengus debilis LeConte, 1881: 41.

Type locality.

California, USA (Fig. 3 ).

Type material examined.

Holotype ♂: "Type /2813" " Cenophengus / Cenophengus debilis Lec." “Cal.” | MCZ, url: http:/insects.oeb.harvard.edu.

Remarks.

Cenophengus debilis is morphologically similar to C. baios , but can be distinguished by the antennal rami length, branching of the hind wing and interantennal distance. In C. debilis , the branching of the anterior cubital veins (CuA) is present on the hind wing, whereas in C. baios , it is unbranched. The interantennal distance is wider than length of first antennomere in C. debilis , in C. baios , it is narrower than length of antennomere 1. Additionally, in C. debilis , the antennal rami are 1.5 times as long as the respective antennomere, whereas in C. baios , they are as long as the respective antennomere.

Diagnosis.

Integument smooth and pronotum bicoloured (yellow-orange and dark brown); antennal rami are 1.5 times as long as the respective antennomere; clypeus totally sclerotised; anterior cubital veins (CuA) on hind wing branched; aedeagus with one spine at the inner apex of paramere.

Redescription.

Male. Body length 4.0-5.3 mm; maximum body width 0.64-0.70 mm (pronotum). Body brown, except for the head, posterior part of the pronotum, scutellum and elytra are dark brown (Fig. 2A, B ). Head. Wider (0.64-0.82 mm) (0.68 ± 0.025 mm, n = 6) than long (0.35-0.44 mm) (0.37 ± 0.036 mm, n = 6) (Fig. 2C ), at eye level, almost as wide as the pronotum, integument smooth, punctures smaller than eye facets and separated by approximately 2.5 punctured diameters, each puncture bearing a yellow-orange seta; interantennal distance (0.10-0.13 mm) (0.11 ± 0.012 mm, n = 6) less than the length of antennomere 1 (0.12-0.17 mm) (0.15 ± 0.016 mm, n = 6); eyes 3/4 as long as head in lateral view, longer (0.25-0.35 mm) (0.30 ± 0.031 mm, n = 6) than wide (0.11-0.19 mm) (0.16 ± 0.031 mm, n = 6); interocular distance (0.40-0.46 mm) (0.42 ± 0.031 mm, n = 6) 2.5 times eye width; short antennae (1.16-1.40 mm) (1.2 ± 0.099 mm, n = 6), less than twice the length of the pronotum; antennomere 1 (0.10-0.15 mm) (0.11 ± 0.023 mm, n = 6) longer than the next two combined, antennomere 3 cup-shaped, the 4 (0.08-0.11 mm) (0.98 ± 0.011 mm, n = 6) shorter than the following antennomeres; 5 to 11 about equal in length (0.10-0.12 mm) (0.11 ± 0.08 mm, n = 6), 12 (terminal) (0.16-0.20 mm) (0.17 ± 0.020 mm, n = 6), antennal rami lanceolate in lateral view, 1.5 times as long as respective antennomere; terminal maxillary palpomere robust, securiform (0.15-0.17 mm) (0.16 ± 0.009 mm, n = 6), is shorter than the preceding three combined; terminal labial palpomere spindle-shaped (0.10-0.12) (0.11 ± 0.008 mm, n = 6), 5 times as long as preceding one (0.02-0.03 mm) (0.25 ± 0.005 mm, n = 6). Thorax. Pronotum longer (0.63-0.72 mm) (0.68 ± 0.038 mm, n = 6) than wide (0.64-0.70 mm) (0.68 ± 0.025 mm, n = 6); (Fig. 2D ); integument smooth, punctures smaller than eye facets and separated by approximately 1.5 punctured diameters, each puncture bearing a yellow-orange seta, convex disc, posterior margin curved with middle notch, sides convex, anterior and posterior angles rounded; mesosternal suture complete; scutellum with posterior margin rounded; each elytron 3.5 times as long (1.68-1.75 mm) (1.71 ± 0.027 mm, n = 6) as wide (0.44-0.48 mm) (0.45 ± 0.013 mm, n = 6), convex, without longitudinal costae, elytral apex right angled; hind wings with posterior radial vein (RP) length 4 times less than the length of MP1+2, radial cell closed, r3 vein present, r4 vein reduced (not reaching the RP or the radial cell), those of the anterior anal and posterior anal sectors, evident (Fig. 2E ). Legs: tarsomere 1 of pro-, meso- and metathoracic legs longer than 2. Abdomen. Integument shiny, punctured, with long dense setae, sternite 7 with margin sinuate, sternite 8 with margin notched; aedeagus with one spine at the inner apex of paramere (Fig. 2F-H ).

Immatures and females.

Unknown.

Distribution.

USA: California (Fig. 3 ).

Additional material examined.

" USA CA: 10 mi. NE of / Trimmer / 24.VI. 93. / Lot 2 BF&JL/ Carr." " J. & B. Carr Coll. / Bequest to CNCI/ August , 2000" (3) | CNCI; " Sun City , Calif. / Riverside Co. / VIII. 28.1968/ D. E. Bright " " Cenophengus / Cenophengus debilis / det. W. Wittmer " (1) | CNCI; " 3 mi. N Refugio / Beach , Calif. / Sta. Barb. Co. / July 4, 1965 " " J.S. Bucket / Collector" (1) | CNIN; "Pasadena/ 13 - 15/ VI.1917 Cal. / A. Fenyes " "Electric light" " Cenophengus / Cenophengus debilis Lec. / det. D. Linsdale 1960" (1) | CNIN .

Figures

Figure 2. Cenophengus debilis LeConte, 1881, male. Habitus: A dorsal B ventral C head dorsal D pronotum dorsal E hind wing. Wing venation: CR = Radial Cell; r 3 = radial 3 vein; r 4 = radial 4 vein; RP = Posterior Radial vein; MP 1 + 2 = Posterior Median vein; CuA = Cubital vein; AA and AP = Anterior and Posterior Anal veins. Aedeagus: F dorsal view G lateral view H ventral view.

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