A new species of Surazomus (Arachnida, Schizomida) from Brazilian Oriental Amazonia

Abstract

Surazomus paitit sp. nov. is described from the Caxiuanã National Forest, State of Pará, Brazil. The new species resembles S.manaus Cokendolpher & Reddell, 2000 and S.arboreus Cokendolpher & Reddell, 2000 due to the shape of the male flagellum (with three projections on the posterior region and two dorsal depressions arranged in a row); it differs from them by the presence of two spurs on the pedipalpal femur (instead of a single one in S.arboreus and none in S.manaus), and by the male flagellum with slightly convergent sides posteriad (instead of parallel sides in S.manaus).

Description of a new species of Surazomus (Arachnida: Schizomida), with comments on homology of male flagellum and mating march anchorage in the genus

“…Within Surazomus , four species share features believed to be apomorphic and compose a species group, easily distinguished from the remaining species of the genus and traditionally recognized, but unnamed [ 23 , 24 , 13 ]. To ease the discussion below, we herein propose the use of the informal name “the arboreus -group of Surazomus ” to refer to that group.…”

“…Diagnosis . Species of the arboreus -group of Surazomus may be recognized by the males having pentagonal flagellum and bearing only two dorsal coupling pockets: one in front of Dm1 (AP), and another between Dm1 and Dm4 (PP), and by having a single large posterodorsal process on tergite XII (see Cokendolpher & Reddell [ 23 ]: figs 11, 13, 20 and 23; Bonaldo & Pinto-da-Rocha [ 24 ]: figs 2 and 3). Also, females have two pairs of slender, elongated spermathecal lobes with small bulbs followed by terminal constrictions (see Cokendolpher & Reddell [ 23 ]: figs 14, 15, 24 and 25).…”

Aspects of the Behavior and Activity Rhythms of Rowlandius potiguar (Schizomida: Hubbardiidae)

“…The fauna of Schizomida, in Brazil, is relatively little known [9] . Only eleven species have been registered for the country [7] , [8] , [10] , one being introduced to the coast of Rio de Janeiro [11] and the others restricted to locals of the Amazon forest and Northeast Brazil [7] , [12] , [13] . However, numerous new species have been discovered in Brazil, suggesting that the number of described species results from the low sampling that historically has occurred in the country.…”

Nuevo Rowlandius Reddell & Cokendolpher, 1995 (Schizomida: Hubbardiidae) de la Sierra San Luis, Venezuela noroccidental

“…La fauna de esquizómidos que puebla Suramérica permanece aún muy poco estudiada. De países tropicales tan extensos y biodiversos como Colombia, Brasil y Venezuela se han registrado solo nueve géneros y menos de una veintena de especies (Harvey, 2003;Armas & Colmenares, 2006;Villarreal & Teruel, 2006;Bonaldo & Pinto-da-Rocha, 2007;Villarreal et al, 2008;Santos et al, 2008, Santos &Pinto-da-Rocha, 2009). Sao Paulo (Brasil) representa, hasta ahora, el límite geográfico más meridional del orden en América (Santos et al, 2008).…”