Tylodinus ixchel 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 : 23-24

9. Tylodinus ixchel Luna-Cozar , sp. nov.

( Figures 44–45 , 105 , 131 )

Diagnosis. Length male, 2.4–2.7 mm, female, ca. 2.8 mm (damaged). Width male, 1.1–1.2 mm, female ca. 1.3 mm (damaged). As for T. exiguus with following exceptions: head with dark brown scales; vertex with yellow scales. Pronotum in lateral view moderately convex; surface with small punctures. Metasternum concave. Ventrite 1 concave with scattered scales, ventrite 2 with line scales interrupted medially. Hind femur length extending near to elytral apex, front tibiae with apical 1/4 curved, middle and hind tibiae parallel. Male genitalia ( Figure 105 ) with median lobe in lateral view very slender; in ventral view as long as apodemes, lateral sides convex beyond 0.27 of length from the base; apical process slightly curved. Female with sternite eight sub-trapezoidal, with the membranous median area ½ as long as basal plate, ramus indistinct, nodulus slender.

Geographic distribution. México (Chiapas).

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

Derivation of specific name. Noun in apposition: after the word ixchel, Mayan name of the Moon goddess, also the goddess of childbirth, medicine and of rainbows.

Material examined. Total 5 males, 1 female. Holotype male ( CMNC): México: Chiapas, Unión Juárez, Volcán Tacaná, lower slopes, ca 4 km N, Unión Juárez , elev. 2000 m (15°5'47.29''N, 92°5'17.04''W), 20.ix.1992, coll. R . S. Anderson. Paratypes: Same data as holotype, 4 males, 1 female ( CMNC, ECOS) .

Figures

FIGURES 44–51. Dorsal and lateral habitus: 44–45. Tylodinus ixchel, 46–47. Tylodinus jonesi, 48–49. Tylodinus wibmeri, 50–51. Tylodinus variabilis.

FIGURES 100–109. Ventral and lateral habitus of median lobe: 100. Tylodinus andersoni, 101. Tylodinus cavicrus, 102. Tylodinus pseudocavicrus, 103. Tylodinus rugosus, 104. Tylodinus exiguus, 105. Tylodinus ixchel, 106. Tylodinus jonesi, 107. Tylodinus variabilis, 108). Tylodinus leoncortesi, 109. Tylodinus triumforium.

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.