Mesabolivar camacan, Huber, 2018

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

Mesabolivar camacan sp. n.

Figs 172–177 , 195–196

Diagnosis. Males are distinguished from similar congeners ( M. maxacali , M. baianus , M. buraquinho , M. bonita , M. amadoi ) by armature of male chelicerae ( Figs 172, 173 ; 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, 175 ; very short prolateral apophysis, wide prolatero-dorsal flap); females differ from similar congeners by shape of epigynum ( Figs 176 , 195 ; 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. 143 ); ocular area raised; carapace with distinct median furrow; clypeus unmodified; sternum unmodified.

CHELICERAE. With two pairs of distinctive frontal apophyses ( Figs 172–173 ), 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 178–179 ), M. togatus (Huber 2000: figs 855–856), and M. bonita (Huber 2015: figs 62–63); procursus distally wide, prolateral apophysis very short ( Figs 174–175 ).

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 176 , 195 ; anterior plate with distinctive posterior margin (whitish areas are part of anterior plate); posterior plate simple and large. Internal genitalia as in Figs 177 , 196 , 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. 727 ).

Figures

FIGURES 172–177. Mesabolivar camacan sp. n. (MNRJ 14310). 172–173. Male chelicerae, frontal and lateral views. 174– 175.Left procursus,prolateral and dorsalviews.176.Epigynum,ventral view.177.Clearedfemalegenitalia,dorsal view.Scale lines:0.5.

FIGURES188–199. Femaleepigyna in ventral views and cleared female genitalia in dorsal views, Mesabolivar togatus group (part 1). 188–190.M.togatus (Keyserling, 1891), from Guapiaçú (188–189, ZFMK Ar 19017) and Sooretama (190, ZFMK Ar 19029).191–193.M.baianus sp. n., from Una (191–192, ZFMK Ar 19031) and Serra Bonita (193, ZFMK Ar 19038). 194.M. similis sp. n. (ZFMK Ar 19039). 195–196. M. camacan sp. n. (ZFMK Ar 19040). 197. M. buraquinho sp. n. (ZFMK Ar 19042).198–199.M.caiporaHuber, 2015, from São João (198, ZFMK Ar19062) and Mata do Crasto (199, ZFMK Ar 19060).

FIGURES 138–149. Live specimens, Mesabolivar togatus group. 138–139. M. togatus (Keyserling, 1891), males from Sooretama (with Arachnocoris bug; arrow) and Santa Maria Madalena. 140. M. baianus sp. n., male from Serra Bonita. 141– 142. M. similis sp. n., male and female from Morro de Pedra.143–144. M. buraquinho sp. n., male from Bonito, female from Mata do Buraquinho.145–146.M.caiporaHuber, 2015,male and femalefrom Serra daItabaiana.147. M.inmanis sp. n., male from Vargem Alta.148–149.M.cyaneomaculatus (Keyserling, 1891), males from Penedo.

FIGURES 178–183. Mesabolivar buraquinho sp. n. (ZFMK Ar 19041). 178–179. Left male palp, prolateral and retrolateral views. 180–181. Tip of left procursus, prolateral and dorsal views. 182–183. Male chelicerae, frontal and lateral views. Scale lines:0.5.

FIGURES726–729. Knowndistribution of the Mesabolivar togatusgroup.“?”: dubious recordsof M.togatus, possible record of M. baianus (sub. M. togatus in Machado 2007), and of M. cyaneomaculatus from Paraná (Mello-Leitão 1947b); asterisk: erroneous record of M.togatusfrom Pará in Mello-Leitão (1940a).TL, type locality.