Tylodinus parvus 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 : 39

21. Tylodinus parvus Luna-Cozar , sp. nov.

( Figures 66–67 , 114 , 133 )

Diagnosis. Length male, 2.0– 2.5 mm. Width male, 1.1–1.2 mm. As for T. mutabilis with follow exceptions: body approximately 1.9x longer than wide. Head with dark brown scales; vertex with scales similar in coloration and tonality to scales on head, dense to contiguous. Pronotum in lateral outline with anterior constriction and without posterior constriction; disc hollowed. Base of elytra declivity with tubercle on I2 smaller than tubercle on I4. Metasternum flat. Male abdomen with ventrite 1 feebly concave, ventrite 2 glabrous at median section. Male genitalia ( Figures 114 ) with median lobe in lateral view stout. Female unknown.

Geographic distribution. México (Chiapas).

Habitat and elevation. The two known specimens were collected from leaf litter in cloud forest at 1500 m.

Derivation of specific name. Name derived from Latin word parvus = small, little, smallest.

Material examined. Total 2 males. Holotype male ( CMNC): México: Chiapas, Trinitaria, Lagunas de Montebello, Cinco Lagos , elev. 1500 m (16°6’13.32’’N, 91°40’46.2’’W), 21.ix.1991, coll. R . S. Anderson. Paratype: Same data as holotype— 1 male ( CMNC) .

Figures

FIGURES 60–67. Dorsal and lateral habitus: 60–61. Tylodinus lum, 62–63. Tylodinus spiniventris, 64–65. Tylodinus mutabilis, 66–67. Tylodinus parvus.

FIGURES 110–119. Ventral and lateral habitus of median lobe: 110. Tylodinus sepulturaensis, 111. Tylodinus lum, 112. Tylodinus spiniventris, 113. Tylodinus mutabilis, 114. Tylodinus parvus, 115. Tylodinus pusillus, 116. Tylodinus porvenirensis, 117. Tylodinus elongatus, 118. Tylodinus complicatus, 119. Tylodinus rufus.

FIGURES 132–133. Maps showing collecting sites. 132. Occurrences in Chiapas, México of: Tylodinus intzin, Tylodinus variabilis, Tylodinus exiguus, Tylodinus mutabilis, Tylodinus wibmeri, Tylodinus elongatus; 133. Occurrences in Chiapas, México of: Tylodinus leoncortesi, Tylodinus buchanani, Tylodinus pusillus, Tylodinus gibbosus, Tylodinus kissingeri, Tylodinus parvus.