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

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Sicoderus bipunctiventris Anderson

n. sp.

Sicoderus bipunctiventris Anderson , n. sp.

( Figures 13–14, 14a View FIGURES 13–16 , 21 View FIGURES 21–24 . Map 1)

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) GoogleMaps .

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.


West Indian Beetle Fauna Project Collection


Florida State Collection of Arthropods, The Museum of Entomology