Pinocchio barauna Huber & Carvalho

Huber, Bernhard A. & Carvalho, Leonardo S., 2019, Filling the gaps: descriptions of unnamed species included in the latest molecular phylogeny of Pholcidae (Araneae), Zootaxa 4546 (1), pp. 1-96: 36-38

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Pinocchio barauna Huber & Carvalho

sp. n.

Pinocchio barauna Huber & Carvalho  sp. n.

Figs 123–134View FIGURES 123–129View FIGURES 130–131View FIGURES 132–134, 322View FIGURES 322–328

Gen.n. Br15-159: Eberle et al. 2018 (molecular data); Huber et al. 2018: fig. 2.

Type material. BRAZIL: ♂ holotype, UFMG (22730)  , 2♀ paratypes, UFMG (22731, 22704), 3♀ paratypes, CHNUFPI (2288, 2499), and 6♀ paratypes, ZFMK (Ar 20622), Rio Grande do Norte, near Baraúna, Parque Nacional de Furna Feia , Caverna Porco do Mato II (5°02.80’S, 37°32.39’W), 160 m a.s.l., (B.A. Huber, L.S. Carvalho)GoogleMaps  .

Other material examined. BRAZIL: 1♀, ZFMK (Br15-266)  ; 2♀, CHNUFPI (2484, 2497); and 2♀, UFMG (22705–06), all in pure ethanol, same data as types  .

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

Diagnosis. Easily distinguished from other Ninetinae  by modification of male clypeus ( Figs 132–133View FIGURES 132–134; pointed median process), by shape of male palpal femur ( Fig. 131View FIGURES 130–131; strongly widened on ventral side), by complex structures distally on procursus ( Figs 130–131View FIGURES 130–131; distinctive black process dorsally, distal part with black scales), by distinctive sclerotized and membranous structures distally on genital bulb process ( Figs 130–131View FIGURES 130–131), and by large median dark structure in internal female genitalia ( Figs 129View FIGURES 123–129, 134View FIGURES 132–134).

Description. Male (holotype). MEASUREMENTS. Total length 1.07 (1.17 with clypeus process), carapace width 0.48. Distance PME-PME 40 µm; diameter PME 50 µm; distance PME-ALE 15 µm; distance AME-AME 10 µm, diameter AME 20 µm. Leg 1: 2.08 (0.60 + 0.17 + 0.57 + 0.47 + 0.27), tibia 2: 0.47, tibia 3: 0.40, tibia 4: 0.63; tibia 1 L/d: 7.5.

COLOR (in ethanol). Prosoma and legs ochre-yellow. Abdomen monochromous ochre-gray.

BODY. Habitus as in Figs 123–126View FIGURES 123–129. Ocular area barely elevated; thoracic furrow absent; clypeus with distinctive median process bent upwards at tip ( Figs 132–133View FIGURES 132–134). Sternum slightly wider than long (0.34/0.30), with distinct pair of anterior humps ( Fig. 132View FIGURES 132–134).

CHELICERAE. With pair of simple frontal apophyses and very indistinct stridulatory ridges (barely visible in dissecting microscope; Figs 132–133View FIGURES 132–134).

PALPS. As in Figs 130–131View FIGURES 130–131; coxa unmodified, trochanter barely modified; femur proximally with stridulatory scape (modified hair), distally strongly widened on ventral side; tibia almost globular, procursus with distinctive black process dorsally, distal part with many tines (or scales); bulb with complex process, opening of sperm duct not seen.

Legs. Without spines and curved hairs, few vertical hairs; retrolateral trichobothrium of tibia 1 at 60%; tibia 1 without prolateral trichobothrium (present on other tibiae); tarsus 1 with few pseudosegments (~4, poorly visible in dissecting microscope).

Female. In general similar to male but without humps on sternum and without process on clypeus; chelicerae without stridulatory ridges (checked in SEM). Tibia 1 in 11 females: 0.46–0.53 (mean 0.49). Epigynum simple externally ( Fig. 127View FIGURES 123–129), semicircular anterior plate and more weakly sclerotized posterior plate. Internal genitalia with distinctive dark median structure (receptacle?), apparently without pore plates ( Figs 129View FIGURES 123–129, 134View FIGURES 132–134). ALS with one widened, one pointed, and apparently 5–6 cylindrically shaped spigots ( Fig. 322View FIGURES 322–328).

Distribution. Known from type locality only ( Fig. 345View FIGURE 345).

Natural history. This species was found in the twilight zone of a cave ( Fig. 338View FIGURES 336–341), under rocks and small stones on the ground. The cave is located in a semiarid Caatinga area.