Filling the gaps: descriptions of unnamed species included in the latest molecular phylogeny of Pholcidae (Araneae)
Author
Huber, Bernhard A.
Author
Carvalho, Leonardo S.
text
Zootaxa
2019
2019-01-22
4546
1
1
96
journal article
27622
10.11646/zootaxa.4546.1.1
aa93de4b-c9ed-4b3e-a1c2-3f5d90faba57
1175-5326
2619020
D2C9F49A-9B76-40AE-9A60-CAE9B99BA547
Pinocchio barauna
Huber & Carvalho
sp. n.
Figs 123–134
,
322
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.
,
7.vi.2015
(
B.A. Huber
,
L.S. Carvalho
)
.
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 132–133
; pointed median process), by shape of male palpal femur (
Fig. 131
; strongly widened on ventral side), by complex structures distally on procursus (
Figs 130–131
; distinctive black process dorsally, distal part with black scales), by distinctive sclerotized and membranous structures distally on genital bulb process (
Figs 130–131
), and by large median dark structure in internal female genitalia (
Figs 129
,
134
).
FIGURES 123–129.
Pinocchio barauna
sp. n.
(male: UFMG 22730; female: ZFMK, Ar 20622). 123–124. Live male (holotype). 125–126. Male (holotype), dorsal and lateral views. 127. Epigynum, ventral view. 128–129. Cleared female genitalia, ventral and dorsal views. Scale lines: 0.5 (125–126), 0.2 (127–129).
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 123–126
. Ocular area barely elevated; thoracic furrow absent; clypeus with distinctive median process bent upwards at tip (
Figs 132–133
). Sternum slightly wider than long (0.34/0.30), with distinct pair of anterior humps (
Fig. 132
).
FIGURES 130–131.
Pinocchio barauna
sp. n.
(UFMG 22730). Left male palp, prolateral and retrolateral views. gb, genital bulb; pr, procursus. Scale line: 0.3.
CHELICERAE. With pair of simple frontal apophyses and very indistinct stridulatory ridges (barely visible in dissecting microscope;
Figs 132–133
).
PALPS. As in
Figs 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. 127
), semicircular anterior plate and more weakly sclerotized posterior plate. Internal genitalia with distinctive dark median structure (receptacle?), apparently without pore plates (
Figs 129
,
134
). ALS with one widened, one pointed, and apparently 5–6 cylindrically shaped spigots (
Fig. 322
).
Distribution
. Known from
type
locality only (
Fig. 345
).
Natural history
. This species was found in the twilight zone of a cave (
Fig. 338
), under rocks and small stones on the ground. The cave is located in a semiarid Caatinga area.