R S. ANDERSON
Entomology-Canadian Museum of Nature, Ottawa
NEW SPECIES OF SICODERUS VANIN FROM THE VIRGIN ISLANDS (COLEOPTERA: CURCULIONIDAE; CURCULIONINAE; OTIDOCEPHALINI)
Anderson, R. S. 1999. New species of Sicoderus Vanin from the Virgin Islands (Coleoptera: Curculionidae; Curculioninae; Otidocephalini). – Tijdschrift voor Entomologie 141 [1998]: 129-135, figs.1-12. [ 0040-7496]. Published 1 March 1999. Three new species of the genus Sicoderus Vanin from the Virgins Islands of the Greater Antilles are described. The three new species are Sicoderus ivieorum sp. n., S. hirsutiventris sp. n., and S. vanini sp. n. They are placed in the S. tinamus species group and compared with known West Indian Sicoderus. A key to all Sicoderus in the West Indies (including Florida) is presented. Robert S. Anderson, Entomology-Canadian Museum of Nature, P.O. Box 3443, Station D, Ottawa, ON. K1P 6P4, Canada. E-mail: [email protected] Key words. – Weevil; biogeography; inventory; West Indies
The genus Sicoderus is well-represented in the is- Antennal insertion submedial in male and female. An- lands of the West Indies with ten recognized species tenna with article II of funicle 1.49-1.57 length ar- in two species groups found there (Vanin 1986). The ticle III in male; 1.27-1.29 length article III in fe- four members assigned to the S. delauneyi group are male. Prothorax with length 1.17-1.19 width in found on the islands of the Lesser Antilles as far north male; 1.23-1.26 width in female. Prothorax con- as Guadeloupe, whereas the six species of the S. tina- stricted anteriorly, globose, widest at anterior one- mus group are known from southern Florida and the third; punctures well-separated, sparse, very fine and Bahamas, Cuba and Hispaniola. Recent collections of shallow on disk, slightly deeper and larger in anterior Sicoderus from the British and U.S. Virgin Islands one-quarter and very slightly deeper on flanks; with (and Puerto Rico) bridge the geographical gap be- scattered, erect setae along anterior constriction. Ely- tween the ranges of species in these two groups and tra with length 1.86-1.88 width in male; 1.88- represent three undescribed species in the S. tinamus 1.93 width in female; in dorsal view distinctly species group. widest at midlength, lateral margins convergent both Descriptions of these new species follow the format anteriorly and posteriorly; humeri fully reduced, not used in Vanin (1986) to facilitate comparisons with at all angulate; with isolated, erect but short (perhaps species treated therein. A revised key to all Sicoderus abraded or broken), setae in sutural region; apices con- species occuring in southern Florida, the Bahamas jointly rounded. Strial punctures evident, shallow, and the West Indies is presented. moderately fine. Membranous wings lacking. Meta- Specimens are deposited in the Canadian Museum sternum with punctures well-separated, moderately of Nature, Ottawa, Ontario, Canada (), the col- fine and shallow; first row of punctures alongside met- lection of Charles W. O’Brien, Tallahassee, FL. episternum consisting of 3 or 4 widely spaced, shallow (), the collection of Michael A. Ivie, Bozeman, punctures. Abdominal ventrite I of male moderately MT. (), and the United States National Muse- raised in middle near apical margin forming a moder- um, Washington D.C. (). ately elevated tubercle with two small subcontiguous patches of setosity at tip; of female, moderately swol- len in middle near apical margin but not tuberculate, Sicoderus ivieorum sp. n. not setose. Ventrite V of male with rounded shallow (figs. 1-5) impression in apical three-quarters; of female, uni- Description formly convex. Legs with all femora with distinct ven- Length male, 5.2-6.2 mm; female, 4.8-7.2 mm. In- tral tooth; tooth slightly larger on anterior legs; tarsal tegument black, shining. Rostrum 0.97-1.00 length claws with small basal tooth. Aedeagus with shallow elytra in male; 1.09-1.17 length elytra in female. apical notch; slightly expanded laterally near apex; in-
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Figs. 1-2. Sicoderus ivieorum sp. n., male – 1, lateral habitus; 2, dorsal habitus. ternal sac with complex of denticles and sclerites. Fe- A single female specimen labelled ‘ : male not dissected. Guanica For. Res. 26sep1987, M.A. Ivie colr. 33m, beating, thorn scrub’ appears to represent this same Type material. – Holotype male, labelled: ‘ species. It is not included in the type series as males : St. John / Est. CaneelBay, Caneel / Hill Trail fr. need to be examined to confirm conspecificity. As Center / line Rd. 580-600ft / 021992, M.A. Ivie’ Puerto Rico and St. John are part of the Puerto Rican ().– Allotype female () labelled as holo- Bank (an old continental plate) and are not separated type. – Paratypes: 7 males, 3 females. – - by deep water, such a distribution would not be sur- : St. John Est., Caneel Bay, Caneel Hill Trail fr. prising. Center line Rd. 580-600ft., 2 nov 1992, M. A. Ivie (1 , ); St. John Est. Lameshur Bay, Europa-Lt. Derivation of specific name Lameshur Bay, 25 july 1994, M. S.Becker, at night This species is named for Michael and Donna Ivie (1 , ); St. John Est., Lameshur Bay, Reef Bay who have worked extensively on increasing our know- Tr. Europa- Lameshur Bays, 25 july 1994 M.S. Beck- ledge of West Indian, especially Virgin Islands, insects. er, night beating (1 , ); St. John Est., Ham- mer-Farm, Cinnamon Bay Trail, 17 july1994, M.S. Comments Becker, beating veg (1 , ); St. John Est., Sicoderus ivieorum can be distinguished from other Molledahl, 15 july 1994, Petroglyph Trail, leaf litter Sicoderus in the West Indies by the following combi- nr. fresh water, M. S. Becker (1 , ); St. John nation of character states: presence of distinct femoral Est., Hope, Reef Bay Trail, 20 july 1994, M. S. Beck- teeth; elytra with humeri fully reduced and not at all er colr, beating vegetation (1 , ). – - angulate; sparse and fine punctures of the pronotal : Jost Van Dyke, White Bay, 24 july disk, not forming striolae; moderately large and dis- 1994, M. A. Ivie, beating dead catch-n-keep vines tinct punctures of abdominal ventrites; moderately (2 , , ); Tortola, Windy Hill, 24-29 dec developed tubercle of ventrite I of male; shallow, fine- 1993, 300-500’, thorn-scrub for., T.K.Phillips colr. ly setose impression on ventrite V of male; and by the (1 , 1 , , ). structure of the aedeagus.
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