Mesabolivar caipora : Huber 2015
Creators: name: Huber, Bernhard A.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Pholcidae
Mesabolivar
Mesabolivar caipora

description: Mesabolivar caipora Huber, 2015
Figs 145–146, 186–187, 198–199
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, 198–199); they are barely distinguishable from females of M. buraquinho (compare Figs 184 and 186; 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).
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); 2♀ in pure ethanol, ZFMK (Br 15-187), same data. 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, 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).
description: Published as part of Huber, Bernhard A., 2018, The South American spider genera Mesabolivar and Carapoia (Araneae, Pholcidae): new species and a framework for redrawing generic limits, pp. 1-178 in Zootaxa 4395 (1) on page 52, DOI: 10.11646/zootaxa.4395.1.1, http://zenodo.org/record/1202519