Notes on the neotropical genus Macrinus (Araneae: Sparassidae)

Abstract

Macrinus Simon, 1887 can be diagnosed by the twisted tegulum with a distal retrolateral laminar projection and the fulcrum with a prolateral serrated projection on the male palp and by the copulatory ducts with an anterior, fused hyaline part and a median long and sclerotized part ending at a slightly rounded spermathecae in the female epigynum. The genus currently includes three species: Macrinus succineus Simon, 1887 and M. jaegeri Rheims, 2007, from Brazil, and M. pollexensis (Schenkel, 1953) from Venezuela. In this paper I describe two new species: Macrinus bambuco sp. nov. and Macrinus calypso sp. nov. The first is based on a male from Lomalinda, Colombia, and is distinguished from the remaining Macrinus by the presence of a retrolateral triangular projection on the tegulum of the male palp. The second is based on a male from Charlotteville, Tobago, and is distinguished from the remaining species by a small retrolateral process at the base of the RTA. In addition, Olios mohavensis Fox, 1937, from the Mojave Desert in California, USA, is transferred to Macrinus. The species can be distinguished from the remaining species of the genus by a median anterior constriction on the anterior margin of the median septum of the female epigynum. It's distribution range is extended to southwestern North America, in the Nearctic region. No Macrinus species is known to occur in Central America

On the huntsman spider genera Sparianthina Banks, 1929 and Anaptomecus Simon, 1903 from South and Central America (Araneae, Sparassidae)

“…Measurements are in millimetres. Styles of description are according to Jäger (2008) and Rheims (2008). Positions of tegular structures, e.g., embolus and conductor, are given as clock positions on the left palp in ventral view.…”

“…Eusparassus Simon, 1903, and in the South American genus Adcatomus Karsch, 1880 [only females of A. fl avovittatus (Simon, 1897)] (Jäger 1998(Jäger , 2001Rheims 2008). All these species have less than three promarginal teeth on the chelicerae and are not considered closely related to either Heteropodinae or Sparianthina.…”

“…Th e present paper is one in a series of papers treating Sparassidae from the Americas Rheims 2007Rheims , 2008; Rheims and Jäger 2008;Rheims et al 2008) and aims to revise the two genera Sparianthina and Anaptomecus.…”