Mesabolivar caipora Huber, 2015

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: 52

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Mesabolivar caipora Huber, 2015


Mesabolivar caipora Huber, 2015  

Figs 145–146 View FIGURES 138–149 , 186–187 View FIGURES 184–187 , 198–199 View FIGURES188–199

Mesabolivar caipora Huber, 2015: 7   –8, figs 10, 52–54 (♂ only; ♀ misidentified, see Note below; Brazil: Bahia).

Note. In the original description of this species, females were explicitly assigned with hesitation, and newly collected larger samples of males and females (see below) show that this assignment was wrong. The identity of the females assigned to M. caipora in Huber (2015)   remains unclear (see Note under description of M. baianus   ).

Diagnosis. (amendments; see Huber 2015). Males are easily distinguished from known congeners by unique cheliceral armature (Huber 2015: fig. 54; distinctive oblique processes similar to M. togatus   but without proximal modification). Male palps appear indistinguishable from those of M. buraquinho   . Females differ from most known congeners by round sclerotized depression on anterior epigynal plate ( Fig 186 View FIGURES 184–187 , 198–199 View FIGURES188–199 ); they are barely distinguishable from females of M. buraquinho   (compare Figs 184 and 186 View FIGURES 184–187 ; median depression apparently consistently slightly larger in M. caipora   ).

Type material. BRAZIL: Bahia: ♂ holotype, IBSP (166455), 1♂ paratype, ZFMK (Ar 12619), Mata de São João (12°28.1’– 12°28.3’S, 38°13.5’– 38°14.7’W), ~ 110 m a.s.l., 8.x.2011 (B.A. Huber, A. Pérez-González, M. Alves Dias).

New records. BRAZIL: Bahia: 1♀, ZFMK (Ar 19060), Mata de São João , ‘site 1’ (12°28.3’S, 38°14.7’W), ~ 110 m a.s.l., 8.x.2011 (B.A. Huber, A. Pérez-González, M. Alves Dias). GoogleMaps  

Sergipe: 4♂ 4♀, ZFMK (Ar 19061–62), near Santa Luzia do Itanhy, Mata do Crasto (11°22.70’S, 37°25.10’W), 20 m a.s.l., 15.v.2015 (B.A. Huber, L.S. Carvalho) GoogleMaps   ; 2♀ in pure ethanol, ZFMK (Br 15-187), same data GoogleMaps   . 13♂ 4♀, ZFMK (Ar 19063–64), Parque Nacional de Itabaiana (10°45.8’–46.0’S, 37°20.4’W), 170–220 m a.s.l., 16.v.2015 (B.A. Huber, L.S. Carvalho)   ; 2♀ in pure ethanol, ZFMK (Br 15-189), same data   .

Description (amendments; see Huber 2015). Tibia 1 in 16 newly examined males: 10.4–13.3 (mean 11.9). Femora 2 and 3 in some males much wider than other femora, in others barely wider. In males from Sergipe, the cheliceral apophyses are slightly less diverging proximally: distance between apophyses proximally (outer margin) in six males from Sergipe: 240–280 µm; in male paratype from Bahia: 320 µm.

Females in general similar to males but all femora same diameter; tibia 1 in seven females: 7.6–10.3 (mean 8.8). Epigynum anterior plate with dark but shallow median sclerotized depression. Internal genitalia as in Fig. 187 View FIGURES 184–187 , with pair of large pore-plates in tent-shaped lateral position, converging anteriorly; arc-shaped ‘valve’ projects beyond anterior margin of epigynal plate, in some females visible in ventral view through cuticle.

Natural history. The spiders were found in large (up to 30 cm diameter) rather flat webs close to the ground, in well sheltered spaces under logs and in hollow trees.

Distribution. Known from three localities in northeastern Bahia and Sergipe states ( Brazil) ( Fig. 727 View FIGURES726–729 ).


Instituto Biologico de Sao Paulo


Zoologisches Forschungsmuseum Alexander Koenig














Mesabolivar caipora Huber, 2015

Huber, Bernhard A. 2018

M. baianus

Huber 2018

Mesabolivar caipora Huber, 2015: 7

: Huber 2015: 7

M. caipora

in Huber 2015