Centipedes and Millipeds (Arthropoda: Diplopoda, Chilopoda) from Saba Island, Lesser Antilles, and a Consolidation of Major References on the Myriapod Fauna of “ Lesser ” Caribbean Islands Rowland M. Shelley Author Shelley, Rowland M. Author Sikes, Derek S. text Insecta Mundi 2012 2012-04-06 2012 221 1 9 journal article 10.5281/zenodo.10108462 1942-1354 10108462 Scolopendra alternans Leach, 1813 Published record . Saba in general (Shelley 2006); Windward Side ( Shelley 2002a ). New localities . None. Remarks . The most common Antillean scolopendrid, S. alternans is the only indigenous New World species of Scolopendra lacking an “anterior transverse suture” on the first tergite, a feature shared with the equivalently sized and nearly as common introduced species, S. subspinipes Leach, 1815 . They are readily distinguished by the number of ventral spines on the ultimate prefemora, 0–3 arranged linearly in S. subspinipes versus numerous, scattered ones in S. alternans , and by the presence ( S. alternans ) versus absence ( S. subspinipes ) of short spines, sometimes elevated on a slight tubercle, on the dorsal distomedial margins of the penultimate and antepenultimate prefemora. Scolopendra alternans is known from a host of Caribbean islands and island groups including Antigua , Bahamas ( Andros , Cat, Exuma , Little Inagua , New Providence, North and South Bimini , Salt Cay, San Salvador), Barbuda , British Virgin Islands (Caiba, Guana, Pete’s I., Tortola ), Dominica , Guadeloupe , Montserrat, St. Barthélemy , St. Eustatius , St. Kitts , St. Lucia , and US Virgin Islands (St. Croix, St. Thomas) (records summarized in Shelley 2002a ). It also inhabits the Keys and southernmost peninsular Florida , USA . Rafting from Cuba , as documented for the similarly distributed tree snail, Liguus fasciatus (Müller) ( Roth and Bogan 1984 , Deisler-Seno 1994, Shelley 2002a ), is the most plausible explanation for its occurrence in this corner of North America. Rafting may also explain its occurrence on Saba .