Sicoderus ramosi (Sleeper)

Anderson, Robert S., 2018, The genus Sicoderus Vanin 1986 (Coleoptera: Curculionidae: Curculioninae: Erodiscini) in the West Indies, Zootaxa 4497 (3), pp. 301-345 : 328-329

Sicoderus ramosi (Sleeper)

( Figures 61–62 , 69 . Map 2)

Erodiscus ramosi Sleeper 1954: 350 . Holotype male (USNM) from Colonia Ramfis, Dominican Republic, examined. O’Brien and Wibmer 1982: 101.

Sicoderus ramosi ; Vanin 1986: 593. Anderson 1999: 135. Perez-Gelabert 2008: 136.

Description: Length male, 4.2 mm. Integument black, shining. Eyes rather widely separated by a distance about one-half width rostrum at midlength. Rostrum 1.00x length elytra in male. Antennal insertion at about apical 2/ 5 in male. Prothorax constricted anteriorly, globose, widest at about middle; punctures widely spaced, small, shallow on disc, slightly larger and deeper, but not forming striolae laterally on flanks; erect setae absent. Elytra in dorsal view widest at about midlength, lateral margins convergent both anteriorly and posteriorly; humeri fully reduced, not at all angulate; erect setae absent. Strial punctures evident, small, shallow; striae slightly impressed. Membranous wings absent. Abdominal ventrite 1 of male slightly raised in middle near posterior margin with small transverse patch of setosity at tip. Ventrite 5 with impression in apical one-half, not setose. Legs with front femora with ventral margin with small, blunt tooth, tooth absent (or nearly) on middle and hind femora; tarsal claws with small basal tooth. Aedeagus (fig. 69) widest at apex, internal sac with pair of elongate basal sclerites straight, convergent and separate anteriorly, each with short basal straight extension. Female not known.

Material examined: Colonia Ramfis , 3.IV.1953, J.A. Ramos (1 male holotype; USNM) . Colonia Ramfis , Trujillo Valley, 7.VIII.1958, A.F. Archer (1 female; CMNC) .

Comments: Vanin (1986) recognized this species from four specimens occurring in three somewhat distant localities, one in Haiti and two in the Dominican Republic. I have examined the specimens considered by Vanin (1986) as this species and additional specimens not then available to him, and conclude that specimens from two of the localities represent additional new species, close to S. ramosi , but distinct in the form of the basal sclerite complex of the male internal sac. I have only been able to find a single additional specimen of S. ramosi , a female, which I associate with the holotype by general morphology and locality.

Figures

FIGURES 61–64. Species of Sicoderus. 61. Sicoderus ramosi, dorsal habitus. 62. Sicoderus ramosi, lateral habitus. 63. Sicoderus remotus, dorsal habitus. 64. Sicoderus remotus, lateral habitus.

FIGURES 69–72. Species of Sicoderus. 69. Sicoderus ramosi, aedeagus, dorsal view. 70. Sicoderus remotus, aedeagus, dorsal view. 71. Sicoderus schoenherri, aedeagus, dorsal view. 72. Sicoderus sleeperi, aedeagus, dorsal view.