Sicoderus bipunctiventris 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 : 310-311

Sicoderus bipunctiventris Anderson , n. sp.

( Figures 13–14, 14a , 21 . Map 1)

http://zoobank.org/urn:lsid:zoobank.org:act:EE5360CF-2945-4FC5-8FFD-28686738F54E

Description: Length male, 3.0– 3.5 mm; female, 2.8–3.0 mm. Integument black, shining. Eyes rather widely separated by a distance slightly less than width of rostrum at midlength. Rostrum 1.09–1.15x length elytra in male; 1.09–1.28x length elytra in female. Antennal insertion at about apical 2/ 5 in male, slightly before middle in female. Prothorax constricted anteriorly, globose, widest at about middle; punctures dense, large and deep, subcontiguous, forming striolae on disc and 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; setae absent. Strial punctures evident, large, deep; striae deeply impressed throughout length. Membranous wings absent. Abdominal ventrite 1 of male flat basally, in middle near posterior margin with two very small, approximate swellings, each with minute patch of setosity at tip; of female, uniformly convex in middle near posterior margin. Ventrite 2 of both sexes with two large, deep pits on steeply declivious posterior face (fig. 14a). Ventrite 5 of male with rounded very shallow impression in apical one-half; of female, uniformly convex. Legs with all femora simple, ventral margin lacking any trace of tooth; tarsal claws simple, no basal tooth. Aedeagus (fig. 21) subequal in width towards apex and base, internal sac with pair of elongate basal sclerites subparallel, joined anteriorly as a fine arch, each with distinct basal projection. Female not dissected.

Material examined: 11 males, 8 females. Holotype male ( CMNC), labelled CUBA: Cienfuegos Province, Parque Nacional Pico San Juan , road, 21.98542 -80.14873, 1026m, 19.v.2013, A. Deler Hernandez, 2013-025, hardwood forest litter . Paratypes. Data as holotype (2 males, 1 female; CMNC). Parque Nacional Pico San Juan, road, 21.98542 -80.14873, 1026m, 19.v.2013, R.Anderson, 2013-023, hardwood forest litter (3 males, 1 female; CMNC, WIBF) . Parque Nacional Pico San Juan, road, 21.98495 -80.15188, 934m, 19.v.2013, R.Anderson, 2013- 0 21, hardwood forest litter (1 male, 1 female; CMNC) . Parque Nacional Pico San Juan, road, 21.98812 -80.14632, 1086m, 19.v.2013, R.Anderson, 2013-022X, hand collections (1 female; CMNC) . Parque Nacional Pico San Juan, road, 21.98812 -80.14632, 1086m, 19.v.2013, F. Cala Riquelme, 2013-024, elfin forest litter (2 females; CMNC) . Mayari , 4 km E., 21.95754 -80.09966, 912m, 18.v.2013, R.Anderson, 2013-019, hardwood forest litter (1 male; CMNC) . Mayari , 2 km E., 21.96651 -80.11497, 842m, 18.v.2013, R.Anderson, 2013-017, hardwood forest litter (1 male; CMNC) . Mayari , 1 km E., 21.97114 -80.12172, 866m, 18.v.2013, R.Anderson, 2013-018, karst forest litter (1 male; BMNH) . Mayari , 1.5 km E., 21.97100 -80.11644, 866m, 18.v.2013, R.Anderson, 2013-020x, hardwood forest, hand collections (2 females; CMNC, FSCA) . Mayari , 2.5 km E., 21°58’15.6”N, 80°07’05.81”W, 860m, 18.v.2013, G. Zhang, CB-13, L-20 (1 male; ASUHIC) .

Derivation of species name: This species is named ‘bipunctiventris’ after the two large, deep pits on the posterior face of abdominal ventrite 2 (fig. 14a).

Natural History: Adults were collected in elfin and hardwood forest litter (842–1086 m) and beating vegetation.

Comments: The two large, deep pits on the posterior face of abdominal ventrite 2 of both sexes (fig. 14a) is distinctive for this species.

Figures

FIGURES 13–16. Species of Sicoderus. 13. Sicoderus bipunctiventris, dorsal habitus. 14. Sicoderus bipunctiventris, lateral habitus. 14a. Inset, ventrite 2 showing large, deep pits. 15. Sicoderus caladeler, dorsal habitus. 16. Sicoderus caladeler, lateral habitus.

FIGURES 21–24. Species of Sicoderus. 21. Sicoderus bipunctiventris, aedeagus, dorsal view. 22. Sicoderus caladeler, aedeagus, dorsal view. 23. Sicoderus championi, aedeagus, dorsal view. 24. Sicoderus contiguous, aedeagus, dorsal view.