Cenophengus niger Wittmer, 1986

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 niger Wittmer, 1986

Fig. 22A-H

Cenophengus niger Wittmer, 1986: 160.

Type locality.

Monteverde, Costa Rica.

Type material examined.

Holotype ♂: "COSTA RICA: Punt. / Monteverde. 1400 m/ 23 May 1979/ H & A Howden" " Cenophengus / Cenophengus niger Wittmer" " PHENGODIDAE / PHENG00000347" | NHMB.

Remarks.

Cenophengus niger is morphologically similar to C. howdeni , but can be distinguished by the length of antennomere 1 and the diameters of the punctures. In C. niger , antennomere 1 is equal to the length of antennomeres 2 and 3 combined, whereas in C. howdeni , it is shorter than antennomeres 2 and 3 combined. In C. niger , the punctures are twice as long as eye facets and separated by approximately 0.2 punctured diameters, whereas in C. howdeni , they are as long as eye facets and separated by approximately 1 punctured diameter.

Diagnosis.

Integument chagreened, head less wide than pronotum, antennae less than twice the length of the pronotum, antennal rami twice as long as the respective antennomere and each elytron 3.5 times as long as wide; aedeagus with three teeth at the inner apex of paramere.

Redescription.

Male. Body length 6.0-6.3 mm, maximum body width 0.80-0.85 mm (pronotum). Body dark brown, only mouthparts, three first antennomeres, two last abdominal segments, all legs with trochanter and coxae yellowish (Fig. 22A, B ). Head. Wider (0.80-0.83 mm) (0.81 ± 0.0.17 mm, n = 3) than long (0.55-0.60 mm) (0.56 ± 0.028 mm, n = 3) (Fig. 22C ), at eye level, less wide than the pronotum, integument chagreened, punctures twice as long as eye facets and separated by approximately 0.2 punctured diameters, each puncture bearing a yellow-brown seta; interantennal distance (0.08-0.10 mm) (0.089 ± 0.11 mm, n = 3) less than the length of antennomere 1 (0.14-0.15 mm) (0.146 ± 0.005 mm, n = 3); eyes 1/2 as long as head in lateral view, longer (0.26-0.28 mm) (0.266 ± 0.011 mm, n = 3) than wide (0.12-0.14 mm) (0.126 ± 0.011 mm, n = 3); interocular distance (0.40-0.42 mm) (0.403 ± 0.011 mm, n = 3) 3 times eye width; antennae short (2.2-2.3 mm) (2.26 ± 0.057 mm, n = 3) less than twice the length of the pronotum; antennomere 1 (0.14-0.15 mm) (0.146 ± 0.005 mm, n = 3) equal to the length of the next two combined, antennomere 3 cup-shaped, 4 (0.13-0.14 mm) (0.136 ± 0.005 mm, n = 3) shorter than following antennomeres, 5 to 11 about equal in length (0.15-0.16) (0.156 ± 0.005, n = 3), 12 (terminal) (0.20-0.21 mm) (0.206 ± 0.005 mm, n = 3), antennal rami lanceolate in lateral view, twice as long as the respective antennomere; terminal maxillary palpomere robust, securiform (0.25-0.27 mm) (0.263 ± 0.011 mm, n = 3), as long as the preceding three combined; terminal labial palpomere spindle-shaped (0.05-0.06 mm) (0.056 ± 0.005 mm, n = 3), 3 times as long as preceding one (0.02 mm) (0.02 ± 0 mm, n = 3). Thorax. Pronotum longer (0.95-0.98 mm) (0.966 ± 0.015 mm, n = 3) than wide (0.80-0.85 mm) (0.833 ± 0.0.11 mm, n = 3) (Fig. 22D ); integument chagreened, punctures twice as long as eye facets and separated by approximately 0.2 punctured diameters, with a yellow-brown seta in each puncture; disc convex, weakly elevated dorsally forming a small depression in the basal part of each side, posterior margin curved, sides almost straight, anterior angles rounded and posterior angles acute; mesosternal suture complete; scutellum with posterior margin rounded; each elytron 3.5 times as long (1.62-1.74 mm) (1.68 ± 0.061 mm, n = 3) as wide (0.46-0.48 mm) (0.473 ± 0.011 mm, n = 3), convex, without longitudinal costae, elytral apex rounded; hind wings with posterior radial vein (RP) length 6.5 times less than the length of MP1+2, radial cell closed, r3 vein absent, r4 vein developed (reaching the radial cell), those of the anterior anal and posterior anal sectors, evident (Fig. 22E ). 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. 22F-H ).

Female and immatures.

Unknown.

Distribution.

Costa Rica: Monteverde, Heredia and Puntarenas (Fig. 19 ).

Additional material examined.

" COSTA RICA: Heredia / La Selva , 75 m / 10°26'N, 84°01'W / Sept 1992 / P. Hansen, Malaise" "From the Michael/ Ivie Collection" (2) | MTEC; " COSTA RICA: Puntarenas / 3 km SW Rincón / 8.683°N, 83.483°W July 1991. 10 m / P. Hanson. Malaise " "From the Michael/ Ivie Collection" (1) | MTEC .

Figures

Figure 19. Map of southern North America showing specimen localities for Cenophengus spp. (continued).

Figure 22. Cenophengus niger Wittmer, 1986, male. Habitus: A dorsal B ventral C head dorsal D pronotum dorsal E hind wing. Wing venation: CR = Radial Cell; 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.