Mesabolivar camacan,

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: 46-48

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Mesabolivar camacan

sp. n.

Mesabolivar camacan  sp. n.

Figs 172–177View FIGURES 172–177, 195–196View FIGURES188–199

Diagnosis. Males are distinguished from similar congeners ( M. maxacali  , M. baianus  , M. buraquinho  , M. bonita  , M. amadoi  ) by armature of male chelicerae ( Figs 172, 173View FIGURES 172–177; two pairs of distinctive frontal apophyses; distal pair wider than in M. maxacali  ; proximal pair larger than in M. buraquinho  ; more clearly different from other species) and by shape of procursus ( Figs 174, 175View FIGURES 172–177; very short prolateral apophysis, wide prolatero-dorsal flap); females differ from similar congeners by shape of epigynum ( Figs 176View FIGURES 172–177, 195View FIGURES188–199; anterior plate shorter and wider than in M. baianus  ; median sclerite narrower than in M. togatus  and in M. similis  ).

Etymology. The specific name is derived from the type locality; noun in apposition.

Type material. BRAZIL: Bahia: ♂ holotype, 1♀ paratype, MNRJ (14310), 1♀ paratype, ZFMK (Ar 19040), Município de Camacan, Reserva Particular do Patrimônio Natural Serra Bonita (15°23.3’–23.4’S, 39°33.7’– 34.0’W), ~ 750–850 m a.s.l., 2–3.x.2011 (B.A. Huber, A. Pérez-González, M. Alves Dias).

Other material examined. BRAZIL: Bahia: 2♀ in pure ethanol, ZFMK (Br11-166), same data as types. 

Description. Male (holotype)

MEASUREMENTS. Total body length 5.6, carapace width 2.2. Distance PME-PME 210 µm, diameter PME 170 µm, distance PME-ALE 180 µm, distance AME-AME 30 µm, diameter AME 90 µm. Sternum width/length: 1.4/ 1.0. Leg 1: 70.4 (17.3 + 0.9 + 16.9 + 31.3 + 4.0), tibia 2: 12.4, tibia 3: 7.5, tibia 4: 11.2; tibia 1 L/d: 80. Femora 1– 4 width (at half length): 0.29, 0.32, 0.36, 0.29.

COLOR (in ethanol). Carapace ochre-yellow with large dark brown median mark; sternum ochre-orange; legs dark brown, tips of femora and tibiae lighter (whitish to yellowish), black rings on femora (subdistally) and tibiae (proximally and subdistally); abdomen greenish gray, dorsally and laterally densely covered with dark internal marks, ventrally with light orange-brown area in front of gonopore.

BODY. Habitus as in putative close relatives (e.g., M. buraquinho  ; cf. Fig. 143View FIGURES 138–149); ocular area raised; carapace with distinct median furrow; clypeus unmodified; sternum unmodified.

CHELICERAE. With two pairs of distinctive frontal apophyses ( Figs 172–173View FIGURES 172–177), distal pair rounded, near median line, proximal pair pointed (in lateral view), in more lateral position.

PALPS. In general similar to M. buraquinho  (cf. Figs 178–179View FIGURES 178–183), M. togatus  (Huber 2000: figs 855–856), and M. bonita  (Huber 2015: figs 62–63); procursus distally wide, prolateral apophysis very short ( Figs 174–175View FIGURES 172–177).

LEGS. Without spines, without curved hairs, few vertical hairs; retrolateral trichobothrium on tibia 1 at 2%; prolateral trichobothrium present on tibia 1; tarsus 1 with>45 pseudosegments, distally fairly distinct.

Female. In general similar to male but much smaller; the conspecificity is thus uncertain. Tibia 1 in two females: 9.6, 11.3. Epigynum as in Figs 176View FIGURES 172–177, 195View FIGURES188–199; anterior plate with distinctive posterior margin (whitish areas are part of anterior plate); posterior plate simple and large. Internal genitalia as in Figs 177View FIGURES 172–177, 196View FIGURES188–199, with pair of large pore-plates in vertical lateral position, more or less parallel.

Distribution. Known from type locality in Bahia state ( Brazil) only ( Fig. 727View FIGURES726–729).


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