Tylodinus dominicus 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 : 48

27. Tylodinus dominicus Luna-Cozar , sp. nov.

( Figures 78–79 , 120 , 131 )

Diagnosis. Length male, 2.9–3.5 mm, female, 3.1–3.4 mm. Width male, 1.4–1.6 mm, female 1.4–1.6 mm. As for T. complicatus with following exceptions: body approximately 1.9x longer than wide. Head with dark brown scales; vertex with overlapping yellow scales, uniformly distributed along vertex or in patch on middle of vertex, occasionally with intermixed whitish scales, with patch or yellow scales between eyes. Pronotum in lateral view moderately convex; disc somewhat hollowed. Elytral tubercles weak, similar in size. Metasternum concave; metasternal tooth absent. Abdomen with ventrite 1 concave; ventrite 2 glabrous at median section. Hind tibia with external tooth; premucro present. Male genitalia ( Figure 120 ) with median lobe in lateral view moderately to strongly curved, slender; apical process in lateral view large (0.35–0.42 as long as body of median lobe), sinuate, moderately curved downward. Female with sternite eight with membranous median area ½ as long as basal plate.

Comments. Male genitalia in T. complicatus , T. rufus , T. noctis and T. dominicus are very similar; however, T. dominicus is distinguished from its allies by elytra coloration and an external tooth on the tibiae. The external tooth on the middle and hind tibia is occasionally weak.

Geographic distribution. México (Chiapas).

Habitat and elevation. Specimens were collected from leaf litter in mixed forest between 1250–1350 m.

Derivation of specific name. Species name dedicated to religious order of Dominicans or dominicus , meaning = pertaining to a lord, belonging to a master.

Material examined. Total 6 males, 5 females. Holotype male ( CMNC): México: Chiapas, Villa Corzo, Reserva de la Biósfera La Sepultura , elev. 1300 m, 17.vii.2007. R . Anderson. Paratypes: México: Chiapas, Villa Corso, Ejido Sierra Morena, R . Biosfera La Sepultura , elev. 1322 m (16° 9'36.7"N, 93° 36'20.5"W), 12.v.2008, coll. R . S. Anderson — 3 males ( CMNC); Sierra Morena , elev. 1330 m (16.15271°N 93.60087°W), 12.v.2008, LLAMA (Wa-A-01-2-34) — 1 male ( ECOS); same locality (16.15265°N 93.60089°W), 12.v.2008, LLAMA (Wa- A-01-2-32) — 1 male ( CMNC); Sierra Morena elev. 1250 m (16°9'22.7"N, 93° 35'57.1"W), 18.vii.2005, coll. J. L. Cozar — 1 female ( ECOS); Sierra Morena, La Peña, elev. 1250 m, 23.vi.2006, coll. J. L. Cozar — 1 female ( ECOS); Sierra Morena, Parcela de Don Dimas , elev. 1250 m, 23.vi.2006, coll. J. L. Cozar — 1 female ( ECOS); Sierra Morena Parcela Escolar , elev. 1250 m, 23.vi..2006, coll. J. L. Cozar — 1 female ( ECOS); Sierra Morena , Piedra Bola , elev. 1350 m, 23.vi.2006, coll. J. L. Cozar — 1 female ( ECOS).

Figures

FIGURES 76–83. Dorsal and lateral habitus: 76–77. Tylodinus rufus, 78–79. Tylodinus dominicus, 80–81. Tylodinus noctis, 82–83. Tylodinus kuscheli.

FIGURES 120–129. Ventral and lateral habitus of median lobe: 120. Tylodinus dominicus, 121. Tylodinus noctis, 122. Tylodinus kuscheli, 123. Tylodinus pappi, 124. Tylodinus branstetteri, 125. Tylodinus immundus, 126. Tylodinus intzin, 127. Tylodinus gibbosus, 128. Tylodinus kissingeri, 129. Tylodinus pinguis.

FIGURES 130–131. Map showing collecting sites. 130. Occurrences in México (Chiapas) and Central America of: Tylodinus zilchi (El Salvador, Honduras); Tylodinus andersoni (México), Tylodinus canaliculatus (México, Guatemala), Tylodinus triumforium (México), Tylodinus sepulturaensis (México), Tylodinus cavicrus (Guatemala), Tylodinus pseudocavicrus (México); 131. Occurrences in Chiapas, México of: Tylodinus complicatus, Tylodinus ixchel, Tylodinus dominicus, Tylodinus immundus, Tylodinus porvenirensis, Tylodinus branstetteri.