Tylodinus variabilis 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 : 26

12. Tylodinus variabilis Luna-Cozar , sp. nov.

( Figures 2 , 50–51 , 107 , 132 )

Diagnosis. Length male, 3.4–4.0 mm, female, 3.2–4.0 mm. Width male, 1.6–1.7 mm, female 1.5–2.0 mm. As for T. buchanani with the follow exceptions: body clothed with short scales, light scales on vertex and pronotum frequently whitish, but in some specimens light brown. Head with overlapping scales on vertex; front moderately concave. Elytra with basal margin straight ( Figure 2 ), stria 10 complete, surface granulate, tubercles similar to T. buchanani . Metasternal tooth absent. Abdomen squamous, scales setigerous, ventrite 1 convex; ventrite 2 longer than 3–4 combined, convex. Hind femora length almost reaching elytral apex, front tibiae sinuate, middle and hind tibiae subparallel, premucro very small, hind tibiae with apical ¼ curved. Male genitalia ( Fig. 107 ) in lateral view slender; in ventral view with lateral sides concave, subparallel; apical process in lateral view weakly curved. Female genitalia with tergite eight trapezoidal, apex slightly curved, sternite eight oblong, median membranous area subapical; spermatheca shallowly curved, ramus long and slender, nodulus slender.

Geographic distribution. México (Chiapas).

Habitat and elevation. Specimens were collected from leaf litter in high elevation cloud forest between 2300–2750 m.

Derivation of specific name. Name derived from the Latin word variabilis = variable.

Material examined. Total 95 males, 90 females. Holotype male ( CMNC): México: Chiapas, San Cristóbal de las Casas, Cerro Huitepec (pico) 5 km W San Cristóbal, elev. 2750 m (16°44'33''N, 92°41'38.4''W), 15.ix.1991, coll. R . S. Anderson. Paratypes: México: Chiapas, Huixtán , 15 km E San Cristóbal, elev. 2500 m (16°44'49.6''N, 92°29'24.22''W), 28.v.2008, coll. LLAMA (Wa-A-05-1-24) — 1 female ( CMNC); same locality (16.74717°N 92.49017°W), 28.v.2008, coll. LLAMA (Wa-A-05-1-48) — 1 female ( CMNC); same locality (16.74698°N 92.49013°W), 28.v.2008, coll. LLAMA (Wa-A-05-1-16) — 1 male ( CMNC); Bazom , elev. 2450 m (16°44'18.96''N, 92°29'18.24''W), 9.vii.2003, coll. R . S. Anderson — 1 male ( CMNC); San Cristobal de las Casas Airport , elev. 2350 m (16°41'25.08''N, 92°31'48''W), 25.vii.2005, coll. R . S. Anderson — 1 female ( CMNC); San Cristóbal de las Casas, Cerro Huitepec (pico) 5 km W San Cristóbal, elev. 2750 m (16°44'33''N, 92°41'38.4''W), 15.ix.1991, coll. R . S. Anderson — 6 males, 6 females ( CMNC); same locality, 18.ix.1991, coll. R . S. Anderson — 4 males, 2 females ( CMNC); Cerro Huitepec 5 km W San Cristóbal, elev. 2650 m (16°44'37''N, 92°41'23.3''W), 17.ix.1992, coll. R . S. Anderson — 2 males, 5 females ( BMNH, CMNC); Corazón de María, elev. 2449 m (16°41'7.4''N, 92°32'11.4''W), 8.vi.2006, coll. J. L. Cozar — 1 male ( ECOS); Huitepec , elev. 2466 m (16°44'54.2''N, 92°41'6.4''W), 5.v.2006, coll. J. L. Cozar — 2 males, 2 females ( ECOS); same locality, 15.vi.2006, coll. J. L. Cozar — 1 male ( ECOS); same locality, 3.vii.2006, coll. J. L. Cozar — 2 males ( ECOS); same locality (16.75181°N 92.68270°W), elev. 2480 m, 29.v.2008, coll. LLAMA (Wa-A-05-2-01) — 2 males, 1 female ( CWOB); same locality (16.75104°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-18) — 1 male, 1 female ( CMNC); same locality (16.75109°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-17) — 1 female ( CMNC); same locality (16.75131°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-12) — 1 female ( CMNC); same locality (16.75176°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-02) — 3 males, 1 female ( CMNC); same locality (16.75163°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-05) — 3 males, 5 females ( CMNC, ECOS); same locality (16.74689°N 92.48990°W), 29.v.2008, coll. LLAMA (Wa-A-05-1-01) — 1 male ( CMNC); same locality (16.75018°N 92.68280°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-39) — 2 males ( CMNC); same locality (16.75018°N 92.68284°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-40) — 1 male ( CMNC); Huitepec Ocotal, Cerro La Cruz, elev. 2970 m (16°44'31.2''N, 92°41'37.7''W), 12.vi.2006, coll. J. L. Cozar — 3 males, 2 females ( ECOS); Huitepec , 5 km W San Cristóbal, elev. 2750 m (16°44'33''N, 92°41'38.4''W), 14-25.ix.1992, coll. R . S. Anderson — 2 females ( CMNC); same locality, 14.ix.1992, coll. R . S. Anderson — 5 males, 2 females ( CMNC); Huitepec, S. Cristóbal , elev. 2480 m (16.75041°N 92.68270°W), 29.v.2001, coll. LLAMA (Wa-A-05-2-32) — 1 male, 1 female ( CMNC); same locality (16.75032°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-34) — 2 females ( ECOS); same locality (16.75045°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-31) — 1 male, 2 females ( CMNC); same locality (16.75163°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-05) — 1 female ( CMNC); same locality (16.75050°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-30) — 1 male, 1 female ( ECOS); same locality (16.75032°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-34) — 1 female ( CMNC); same locality (16.75077°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-24) — 1 female ( CMNC); same locality (16.75018°N 92.68298°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-43) — 1 female ( CMNC); same locality (16.75018°N 92.68303°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-44) — 1 female ( CMNC); same locality (16.75018°N 92.68308°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-45) — 1 male ( CWOB); same locality (16.75018°N 92.68317°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-47) — 1 male ( CMNC); same locality (16.75018°N 92.68327°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-49) — 1 female ( CMNC); same locality (16.75054°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-29) — 1 male ( CMNC); same locality (16.75082°N 92.68270°W), 29.v.2008, coll. LLAMA (Wa-A-05-2-23) — 1 male ( CMNC); Los Alcanfores, elev. 2450 m (16°44'12.47''N, 92°40'46.93''W), 25.iv.2006, coll. M. Girón — 1 male ( ECOS); Reserva Huitepec , elev. 2400 m (16°44'12.5''N, 92°40'46.9''W), 18.xi.1993, coll. R . Jones — 4 males, 1 female ( ECOS, UAQM); same locality, 18.xi.1993, coll. R . Jones — 1 male ( ECOS); same locality, 16.ii.1994, coll. R . Jones — 1 male ( ECOS); same locality, 16.ii.1994, coll. R . Jones — 2 males, 2 females ( ECOS); same locality, 7.iv.1994, coll. R . Jones — 1 females ( ECOS); same locality, 27.v.1994, coll. B. Gómez-G y O. L. Gómez-N— 2 males ( ECOS); same locality, 25.viii.1994, coll. B. Gómez-G— 2 males ( ECOS); same locality, 26.x.1994, coll. B. Gómez-G— 1 male, 1 female ( ECOS); same locality, 24.i.1995, coll. R . Jones y B. Gómez-G— 1 female ( ECOS); same locality, 24.i.1995, coll. R . Jones — 1 male ( ECOS); same locality, 24.i.1995, coll. R . Jones-W y B. Gómez-G— 1 male ( ECOS); same locality, 27.iv.1995, coll. B. Gómez-G y M. Girón-I— 1 female ( ECOS); same locality, 14.vi.1995, coll. B. Gómez- G, M. Girón-I y A. Méndoza-R— 1 male ( ECOS); same locality, 27.vi.1995, coll. B. Gómez-G y M. Girón-I— 1 female ( ECOS); same locality, 5.vii.1995, coll. M. Girón — 1 male ( UAQM); same locality, 5.vii.1995, coll. R . Jones — 1 male ( UAQM); same locality, 10.vii.1995, coll. R . Jones — 1 female ( UAQM); same locality, 25.vii.1995, coll. R . W. Jones — 4 males, 3 females ( ECOS, UAQM); same locality, 1.viii.1995, coll. A. Mendoza y M. Girón — 1 male ( UAQM); same locality, 15.viii.1995, coll. M. Girón — 1 female ( UAQM); same locality, 3.xi.1995, coll. B. Gómez y M. Girón — 1 male, 2 females ( UAQM); same locality, 14.xi.1995, coll. B. Gómez, M. Girón — 1 male, 1 female ( UAQM); same locality, 5.xii.1995, coll. B. Gómez y M. Girón — 1 male, 2 females ( UAQM); same locality, 6.ii.1996, coll. L. Ruiz-M y M. Girón-I— 3 males, 4 females ( ECOS, UAQM); same locality, 14.ii.1996, coll. L. Ruiz-M y M. Girón-I— 1 male ( ECOS); same locality, 14.ii.1996, coll. L. Ruiz-M y M. Girón-I— 2 males, 2 females ( UAQM); same locality, 7.vii.2003, coll. R . S. Anderson — 1 female ( CMNC); same locality, 12.ii.2004, coll. J. L. Cozar, M. Girón — 1 female ( ECOS); same locality, 9.vi.2004, coll. J. L. Cozar, M. Girón — 1 male, 1 female ( ECOS); same locality, 11.vi.2004, coll. J. L. Cozar — 1 female ( ECOS); same locality, 2.vii.2004, coll. J. L. Cozar — 1 female ( ECOS); same locality, 12.vii.2004, coll. J. L. Cozar — 1 female ( ECOS); same locality, 13.vii.2004, coll. M. Girón — 1 male ( ECOS); same locality, 15.vii.2005, coll. R . S. Anderson — 1 male ( CMNC); same locality, 9.vi.2006, coll. U. Caballero — 1 female ( ECOS); same locality, 12.vi.2006, coll. J. L. Cozar — 1 female ( ECOS); same locality, 17.vi.2006, coll. U. Caballero — 3 females ( ECOS); same locality, 11.vii.2007, coll. J. Longino — 1 female ( CMNC); same locality, 9.vii.2007, coll. R . S. Anderson — 4 males, 4 females ( CMNC); same locality, 9.vii.2007, coll. M. G. Branstetter — 2 females, 1 male ( CMNC); same locality, 11.vii.2007, coll. R . S. Anderson — 3 males, 2 females ( CMNC); Zoológico, elev. 2379 m (16°43'5.5''N, 92°42'9.7''W), 6.vi.2006, coll. J. L. Cozar — 1 male ( ECOS); San Juan Chamula, Cerro Tzontehuitz, elev. 2800 m (16°49'10.2''N, 92°35'3.8''W), 15.vii.1994, coll. R . Jones — 1 male ( UAQM) .

Figures

FIGURES 1–11. 1–5. Dorsal outline: 1. Generalized Tylodinus, indicating terminology used in this study. Key: letters indicate areas of pronotum. A, anterior area; B, median area; C, posterior area; a, anterior of lateral area; b, median section of lateral area; c, median section of dorsal area; d, anterior section of dorsal area; e, posterior section of lateral area; f, posterior section of dorsal area. 2. Tylodinus variabilis, note elytra basal margin straight. 3. Tylodinus ixchel, note elytra basal margin slightly sinuate. 4. Tylodinus immundus, note elytral basal margin sinuate. 5. Tylodinus elongatus, note elytra basal margin very sinuate. 6–11. Lateral outline: 6. Tylodinus complicatus, male, note ventrites 3–5 in same plane as ventrites 1–2. 7. Tylodinus variabilis, male, note ventrites 3–5 not in same plane as ventrites 1–2. 8. Tylodinus coapillensis, female, note ventrites 1–2 strongly convex, ventrites 3–5 not in same plane as ventrites 1–2. 9. Tylodinus zilchi (schematic). 10. Tylodinus sepulturaensis (schematic) 11. Tylodinus rugosus (schematic).

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 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.