Mesabolivar rudilapsi Machado et al., 2007

Huber, Bernhard A., 2018, The South American spider genera Mesabolivar and Carapoia (Araneae, Pholcidae): new species and a framework for redrawing generic limits, Zootaxa 4395 (1), pp. 1-178 : 90-91

publication ID

publication LSID


persistent identifier

treatment provided by


scientific name

Mesabolivar rudilapsi Machado et al., 2007


Mesabolivar rudilapsi Machado et al., 2007

Figs 325–326 View FIGURES 315–326 , 365–368 View FIGURES365–368 , 374–377 View FIGURES 369–377

Mesabolivar rudilapsi Machado et al. 2007a: 57 , figs 12–18 (♂, Brazil: Santa Catarina).

Note. This species was previously known from the male holotype only. Here I newly describe the female and provide new records from Santa Catarina and Paraná states. The new Santa Catarina record below is within the range of coordinates given for the type specimen (which is lost, see below). A neotype is not designated because this is “a species about whose identity there is no doubt” and I do not see the “exceptional need” and other conditions specified in ICZN (1999), Article 75.2–3.

Diagnosis. (amendments; see Machado et al. 2007a). Females of this species are easily distinguished from known congeners by unique shape of epigynum ( Figs 365–367 View FIGURES365–368 ): strongly protruding, with pair of distal humps and large pocket on anterior face.

Type material. BRAZIL: Santa Catarina: ♂ holotype, IBSP (62448), Parque Municipal Nascentes do Ribeirão Garcia (27°01’– 27°06’S, 49°04’– 49°10’W), 290–910 m a.s.l., pitfall trap, 24.x.2004 (R.C. Francisco); not examined (according to Machado 2011, the type has been lost in the Butantan fire of May 2010).

New records. BRAZIL: Santa Catarina: 1♂, ZFMK (Ar 19171), Itajaí National Park (27.049– 27.058°S, 49.083– 49.088°W), Chuva Trail, night collecting at river bank, 300 m a.s.l., 16.x.2014 (B.A. Huber, L.S. Carvalho). GoogleMaps

Paraná: 3♂ 4♀, ZFMK (Ar 19172), Saint-Hilaire / Lange National Park, forest along river above Fazenda Niteroi (25.657°S, 48.601°W), ~ 100 m a.s.l., 11.x.2014 (B.A. Huber, L.S. Carvalho) GoogleMaps ; 1♀ in pure ethanol, ZFMK (Br 14-131), same data GoogleMaps ; 1♀, ZFMK (Ar 19173), same data but night collecting GoogleMaps ; 2♀ in pure ethanol, ZFMK (Br 14- 137), same data GoogleMaps . 1♂, ZFMK (Ar 19174), Saint-Hilaire / Lange National Park , forest above Hotel Mata Atlântica (25.670°S, 48.600°W), ~ 200–300 m a.s.l., night collecting, 12.x.2014 (B.A. Huber, L.S. Carvalho) GoogleMaps . 2♂, SMNK ( ECS 760–61 View Materials ), Reserva Natural do Rio Cachoeira [~ 23.38°S, 48.70°W], 19.xi.2007 (F. Raub, L. Scheuermann). GoogleMaps

Description (amendments; see Machado et al. 2007a). Tibia 1 in five newly examined males: 9.5–11.2 (mean 10.2). Femora 2 and 3 in some males much wider than other femora, in others barely wider (diameters femora 1–4 in 2 males: 0.12, 0.15, 0.16, 0.13; 0.15, 0.25, 0.23, 0.16). Tip of procursus varies slightly among localities; males from Reserva Natural do Rio Cachoeira with small ventral process between ridges and tip.

Females in general similar to male ( Fig. 326 View FIGURES 315–326 ); all leg femora approximately same diameter. Tibia 1 in five females: 5.9–7.3 (mean 6.6). Epigynum as in Figs 365–367 View FIGURES365–368 , 374–376 View FIGURES 369–377 , anterior plate strongly protruding, slightly directed towards anterior, with pair of low distal humps and large pocket on anterior face; posterior plate simple. Internal genitalia relatively small, with distinctively shaped and arranged pore-plates ( Figs 368 View FIGURES365–368 , 377 View FIGURES 369–377 ).

Natural history. The spiders were found in small sheltered spaces close to the ground. When disturbed they vibrated vigorously and eventually ran away.

Distribution. Known from three localities in Santa Catarina and Paraná states ( Brazil) ( Fig. 735 View FIGURE 735 ).


Instituto Biologico de Sao Paulo


Zoologisches Forschungsmuseum Alexander Koenig


Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)














Mesabolivar rudilapsi Machado et al., 2007

Huber, Bernhard A. 2018

Mesabolivar rudilapsi Machado et al. 2007a : 57

Machado et al. 2007a : 57