Tylodinus pinguis Luna-Cozar, 2014

Luna-Cozar, Jesús, Anderson, Robert S., Jones, Robert W. & León-Cortés, Jorge L., 2014, A taxonomic monograph of the genus Tylodinus Champion (Coleoptera: Curculionidae: Cryptorhynchinae: Tylodina) of Chiapas, Mexico, Zootaxa 3788 (1), pp. 1-63 : 62

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https://doi.org/ 10.11646/zootaxa.3788.1

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scientific name

Tylodinus pinguis Luna-Cozar

sp. nov.

36. Tylodinus pinguis Luna-Cozar , sp. nov.

( Figures 96–97 View FIGURES 92–99. 92–99 , 129 View FIGURES 120–129 , 135 View FIGURES 134–135 )

Diagnosis. Length male 4.8–4.9 mm. Width male 2.2–2.3 mm. Body 2.2x longer than wide, black. Head clothed with dark brown scales, punctures similar to punctures on rostrum; vertex with two patches of overlapping scales, whitish or pale yellow color, light brown on lateral margin; frons moderately concave; rostrum moderately robust, weakly carinate, apical area punctuate, eyes moderately convex. Pronotum in lateral view strongly convex, outline with anterior constriction, without posterior constriction ( Figures 10 View FIGURES 1–11. 1–5 , 97 View FIGURES 92–99. 92–99 ), in dorsal view with sides slightly divergent from base to midlength, then convergent to apex, constricted beyond middle; disc somewhat hollowed medially, punctures dense to contiguous at base and progressively more widely spaced, smaller and shallower to apex ( Figures 14 View FIGURES 12–19. 12 , 96 View FIGURES 92–99. 92–99 ); surface granulate. Elytra with tubercles as follows: I2 with round and large tubercle at declivity base; I3 with two tubercles, first subbasal, second smaller, round at middle of elytra; I4 with laminate tubercle beyond declivity; I5 with two small tubercles in same position as tubercles on I3; I7 with two tubercles in same position as tubercles on I5. Metasternum moderately concave, median section glabrous. Male abdomen with ventrite 1 moderately concave, squamous; ventrite 2 feebly concave, longer than ventrites 3–4 combined, squamous; ventrite 5 flat, without impressions, as long as ventrites 1–2. Femora armed, hind femur reaching elytral apex, tibiae with inner margin slightly sinuate, premucro present. Male genitalia ( Figure 129 View FIGURES 120–129 ) with median lobe in lateral view weakly curved, slender; in ventral view as long as apodemes, lateral sides moderately swollen at 0.25 length from the base, convergent, apex acute; apical process in lateral view moderately large (0.26–0.34 as long as body of median lobe), straight, moderately curved downward; in ventral view not constricted beyond median orifice, lateral sides convergent.

Geographic distribution. México (Chiapas).

Habitat and elevation. Specimens were collected from leaf litter in high elevation cloud forest between 2000–2200 m.

Derivation of specific name. Name derived from the Latin word pinguis = fat.

Material examined. Total 2 males. Holotype male ( CMNC): México: Chiapas, Angel Albino Corzo, Reserva El Triunfo , Polígono 1, elev. 2050 m (15°39'25.56''N, 92°48'32.4''W), 16–21.xi.2002, coll. R GoogleMaps . S. Anderson. Paratype: México: Chiapas, La Concordia, 4.3 km SE Custepec, Campamento El Quetzal , elev. 2160 m (15°42'N, 92°55'59.9''W), 18.vii.2007, coll. M. G. Branstetter, 1 male ( CMNC) GoogleMaps .


Departamento de Geologia, Universidad de Chile













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