Omolabus veracruensis Hamilton

HAMILTON, ROBERT W., 2005, Omolabus Jekel in north and central America (Coleoptera: Attelabidae), Zootaxa 986 (1), pp. 1-60 : 57-58

Omolabus veracruensis Hamilton , new species

( Figs. 1 , 19 , 76, 77, 78 & 79)

Type locality. Mexico, Veracruz.

Type Holder. Canadian Museum of Nature ( CMNC)

Type material. The type series consists of 9 specimens. The holotype male [dissected] is labeled as follows: Mexico, Veracruz, 4.3 mi E Huatusco, 21­vi­83, 3400', cloud forest, R Anderson ( CMNC). The allotype female is labeled as follows: Mexico, Veracruz, 2.8 mi SE Tebanca, E Catemaco, 17­vi­1985, Askevold & Heffern ( CWOB). The sex and label data of the paratypes are as follows:

4 males (labeled same as holotype) ( CMNC); 1 female, Mexico, Vcruz [Veracruz], St. Lucrecia, F Knab collector ( USNM); 1 male, Mexico, Veracruz, 7 km E Huatusco, Hwy 125, 16 July 1990, 1230 m, JS Ashe, KJ Ahn, R Leschen, ex beating ( UKSC). 1 female, Guatemala, Suchit, 8 mi N Sta. Barbara, Finca Sta. [Santa] Adelaida, July 14–16, 1959, P & C Vaurie ( AMNH).

Size range. Male: 4.3 x 2.3 mm to 4.9 x 2.5 mm; Female: 5.0 x 2.5 mm to 5.2 x 2.7 mm.

Description. Body testaceous to reddish­brown. Head with some minute punctures near eyes; frons bisulcate, weakly convex between sulci; vertex weakly convex; eyes reniform, not protuberant, flush with surface of head. Rostrum subequal in length to head, punctured throughout, less punctured dorsally beyond antennal insertions, twice as wide as frons at apex, slightly more than twice as wide in female; postlabial area with pair of short, widely separated, bluntly pointed projections in male. Antennae inserted near basal ¼ of rostrum; club elongate­compact, middle and terminal segments nearly subequal in length, basal segment slightly longer; funicular segment 1 ovo­globose, subequal to scape; 2 shorter than 1, clavate; 3 and 4 subequal, like segment 2 but longer; 5 and 6 subequal to segment 1; 5 slightly shorter; 7 short, moniliform. Pronotum smooth, shiny, with minute shallow punctures; anterior collar weakly defined, dorsally widened and v­shaped. Scutellum slightly wider than long, 5­sided, with some minute punctures. Elytra longer than wide, widest across humeri, in dorsal view narrowed posteriorly, with weak depression behind scutellum; humeri obliquely angled, with small acute denticle; striae small, shallow, forming line­like grooves at base, widely separated within row, becoming progressively less distinct beyond elytral base; intervals at elytral base weakly convex, becoming flat, smooth and much wider posteriorly. Profemora evenly swollen in both sexes.

Distribution ( Fig. 1 ). All specimens are from Veracruz, Mexico except a single female from the western coast of Guatemala.

Comments. This species is very similar to O. conicollis but O. veracruensis is distinctly smaller in size and differs in head and rostral characteristics. The aedeaguses of these two species are very distinct ( Figs.19 & 21 ).

Host plants. Host plant associations for this species are unknown.

Name derivation. The specific name is derived from the Mexican state of Veracruz where the majority of specimens were collected.

Figures

FIGURES 1 – 8. Distribution of Omolabus species: 1) Omolabus veracruensis (square), Omolabus spinipectus (circle), Omolabus megalomus (triangle), Omolabus fasciventris (open triangle) 2) Omolabus ligulatus (circle), Omolabus quadratus (open triangle) 3) Omolabus heterocerus (triangle), Omolabus angulipennis (circle) 4) Omolabus laesicollis 5) Omolabus corvinus 6) Omolabus sedatus (circle), Omolabus longiclava (triangle) 7) Omolabus callosus 8) Omolabus conicollis.

FIGURES 15 – 19. Male genitalia of Omolabus species, 64 X: a) tegmen, dorsal view b) median lobe with endophallic sac and transfer apparatus in repose, ventral view 15) Omolabus heterocerus, Mexico, Guerrero 16) Omolabus fasciventris, Panama, Canal Zone 17) Omolabus sedatus, Guatemala, Puente El Lobo­Puerto Barrios 18) Omolabus callosus, Tela­Leon Valley 19) Omolabus veracruensis, Mexico, Veracruz.

FIGURES 20 & 21. Male genitalia of Omolabus species, 64 X: a) tegmen, dorsal b) median lobe with endophallic sac and transfer apparatus in repose, ventral view 20 c) transfer apparatus, lateral view, 21 c) transfer apparatus, dorsal view 20) Omolabus megalomus, Columbia, Leticia 21) Omolabus conicollis, Costa Rica, San Jose.