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Shelley, R. M.; Martinez-Torres, D. (2013). The milliped family Platyrhacidae (Polydesmida: Leptodesmidea) in the West Indies: Proposal of Hoffmanorhacus n. gen.; description and illustrations of males of Proaspis aitia Loomis, 1941; redescription of Nannorrhacus luciae (Pocock, 1894); hypotheses on origins and affinities; and an updated New World familial distribution. Zootaxa. 3626: 477-498.
259659
10.11646/zootaxa.3626.4.4 [view]
Shelley, R. M.; Martinez-Torres, D.
2013
The milliped family Platyrhacidae (Polydesmida: Leptodesmidea) in the West Indies: Proposal of Hoffmanorhacus n. gen.; description and illustrations of males of Proaspis aitia Loomis, 1941; redescription of Nannorrhacus luciae (Pocock, 1894); hypotheses on origins and affinities; and an updated New World familial distribution
Zootaxa
3626: 477-498
Publication
CIM-ID: 6896
In the New World, the milliped family Platyrhacidae (Polydesmida) is known or projected for Central America south of
southeastern Nicaragua and the northern ¼ of South America, with disjunct, insular populations on Hispaniola (Haiti),
Guadeloupe (Basse-Terre), and St. Lucia. Male near-topotypes enable redescription of Proaspis aitia Loomis, 1941,
possibly endemic to the western end of the southern Haitian peninsula. The tibiotarsus of its biramous gonopodal
telopodite bends strongly laterad, and the medially directed solenomere arises at midlength proximal to the bend. With a
uniramous telopodite, P. sahlii Jeekel, 1980, on Guadeloupe, is not congeneric, and Hoffmanorhacus, n. gen., is erected
to accommodate it. Nannorrhacus luciae (Pocock, 1894), on St. Lucia, is redescribed; also with a biramous telopodite, its
tibiotarsus arises distad and diverges from the coaxial solenomere. The Antillean species do not comprise a clade and are
only distantly related; rather than introductions, they plausibly reflect ancestral occurrences on the “proto-Antillean”
terrain before it rifted from “proto-South America” in the Cretaceous/Paleocene, with fragmentation isolating modern
forms on their present islands. Existing platyrhacid tribes are formally elevated to subfamilies as this category was omitted
from recent taxonomies. Without unequivocal evidence to the contrary, geographically anomalous species should initially
be regarded as indigenous rather than anthropochoric.
Caribbean region
Date action by
Amphelictogon subterraneus bahamiensis Chamberlin, 1918 (additional source)
Barydesminae Hoffman, 1980 (original description) Barydesmus Cook, 1896 (additional source) Diodontodesminae Jeekel, 2007 (original description) Erythrhacinae Jeekel, 2007 (original description) Hoffmanorhacus Shelley & Martínez-Torres, 2013 (original description) Hoffmanorhacus sahlii (Jeekel, 1980) (new combination reference) Hoplurorhachinae Hoffman, 2001 (original description) Nyssodesmus Cook, 1896 (additional source) Phyodesminae Cook, 1896 (status source) Polydesmorhachinae Hoffman, 1980 (status source) Proaspis Loomis, 1941 (additional source) Proaspis aitia Loomis, 1941 (additional source) Psammodesminae Hoffman, 1960 (status source) Psammodesmus Cook, 1896 (additional source) Psaphodesminae Cook, 1896 (status source) Rhinotus purpureus (Pocock, 1894) (additional source) Rhyphodesmus Cook, 1896 (additional source) Rhyphodesmus drurii (Gray, 1832) (additional source) Taphodesminae Cook, 1896 (status source) Trigoniulus corallinus (Eydoux & Souleyet, 1842) (additional source) |