Sicoderus aeneus Anderson, 2018

Anderson, Robert S., 2018, The genus Sicoderus Vanin 1986 (Coleoptera: Curculionidae: Curculioninae: Erodiscini) in the West Indies, Zootaxa 4497 (3), pp. 301-345 : 306

Sicoderus aeneus Anderson , n. sp.

( Figures 1–2 , 9 . Map 2)

http://zoobank.org/urn:lsid:zoobank.org:act:D57E3303-1AAC-4182-8F7D-409E5EFAF3C0

Description: Length male, 5.5 mm; female, 6.1 mm. Integument black, shining with somewhat greenish-brown reflection. Eyes rather widely separated by a distance about two-thirds width rostrum at midlength. Rostrum 1.11x length elytra in male; 1.41x length elytra in female. Antennal insertion slightly beyond midlength in male, at about midlength in female. Prothorax constricted anteriorly, globose, widest at about middle; punctures widely spaced, very small, very shallow on disc and laterally on flanks; no setae present. Elytra in dorsal view widest at about midlength, lateral margins convergent both anteriorly and posteriorly; humeri fully reduced, not at all angulate; no setae present. Strial punctures evident, very small, very shallow; striae not impressed. Membranous wings absent. Abdominal ventrite 1 of male near posterior margin with two small patches of fine setosity; of female, uniformly convex in middle near posterior margin. Ventrite 5 impressed medially in male, uniformly convex in female. Legs with front femora with small tooth on ventral margin, middle and hind femora simple, lacking tooth; tarsal claws with small basal tooth. Aedeagus (fig. 9) widest at apex, internal sac with pair of basal sclerites subparallel, slightly hooked at base. Female not dissected.

Material examined: 1 male, 1 female. Holotype male ( CWOB), labelled HAITI: Department du Sud, Formond , 1650m, 28.i.1984, S.R. Yocum, beating bamboo and ferns. Paratype. Data as holotype (1 female; CWOB) .

Derivation of species name: This species is named ‘aeneus’ after the greenish-brown metallic reflection of the cuticle.

Natural History: Two specimens were collected beating bamboo and ferns at 1650m elevation.

Comments: This species is similar to S. striatolateralis and S. pseudostriatolateralis in the very fine punctation of the pronotum, but unlike those two species the posterolateral pronotal flange is not microstriate.

Figures

FIGURES 1–4. Species of Sicoderus. 1. Sicoderus aeneus, dorsal habitus. 2. Sicoderus aeneus, lateral habitus. 3. Sicoderus alternatus, dorsal habitus. 4. Sicoderus alternatus, lateral habitus.

FIGURES 9–12. Species of Sicoderus. 9. Sicoderus aeneus, aedeagus, dorsal view. 10. Sicoderus alternatus, aedeagus, dorsal view. 11. Sicoderus bautistai, aedeagus, dorsal view. 12. Sicoderus beatyi, aedeagus, dorsal view.