Pemona sapo Huber

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: 34-35

publication ID

https://doi.org/10.11646/zootaxa.4546.1.1

publication LSID

lsid:zoobank.org:pub:D2C9F49A-9B76-40AE-9A60-CAE9B99BA547

persistent identifier

http://treatment.plazi.org/id/E21587DB-FFB9-FFF6-FF11-FC8A4FC1FF75

treatment provided by

Plazi

scientific name

Pemona sapo Huber
status

sp. n.

Pemona sapo Huber  sp. n.

Figs 114–122View FIGURES 110–116View FIGURES 117–118View FIGURES 119–122

Gen.n. Ven01: Eberle et al. 2018 (molecular data); Huber et al. 2018: fig. 2.

Type material. VENEZUELA: ♂ holotype, ZFMK (Ar 20620), Bolívar, forest near Salto El Sapo at Canaima (6°14.5’N, 62°51’W), ~ 400 m a.s.l., 9.xii.2002 (B.A. Huber)GoogleMaps  .

Other material examined. VENEZUELA: 3♂ 3♀, ZFMK (Ar 20621), and  4♀ in pure ethanol, ZFMK (Ven02/100-1), same data as holotypeGoogleMaps  .

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

Diagnosis. Distinguished from other New World Ninetinae  by the combination of (1) procursus distally widened and provided with sclerotized scales ( Fig. 118View FIGURES 117–118); (2) genital bulb with small apophysis ( Fig. 117View FIGURES 117–118); (3) male chelicerae with stridulatory ridges and pair of simple frontal apophyses ( Figs 119–120View FIGURES 119–122); (4) presence of shallow thoracic furrow ( Fig. 119View FIGURES 119–122), and (5) male sternum with pair of anterior humps ( Fig. 119View FIGURES 119–122). Distinguished from sister genus Kambiwa  by length of procursus (procursus in Kambiwa  consistently short, i.e. shorter than genital bulb) and very short retrolatero-dorsal bulbal apophysis (in Kambiwa  consistently long and curved).

Description. Male (holotype). MEASUREMENTS. Total length 1.12, carapace width 0.52. Distance PME-PME 45 µm; diameter PME 55 µm; distance PME-ALE 20 µm; distance AME-AME 10 µm, diameter AME 30 µm. Leg 1: 2.68 (0.74 + 0.18 + 0.68 + 0.72 + 0.36), tibia 2: 0.58, tibia 3: 0.52, tibia 4: 0.76; tibia 1 L/d: 10.

COLOR (in ethanol). Prosoma and legs ochre-yellow, only thoracic furrow slightly darker. Abdomen ochregray, with indistinct darker spots.

BODY. Habitus as in Figs 115–116View FIGURES 110–116. Ocular area barely elevated, only posteriorly separated from carapace, thoracic furrow present ( Fig. 119View FIGURES 119–122); clypeus unmodified. Sternum slightly wider than long (0.36/0.32), with distinct pair of anterior humps ( Fig. 119View FIGURES 119–122).

CHELICERAE. With pair of simple frontal apophyses and stridulatory ridges ( Figs 119–120View FIGURES 119–122).

PALPS. As in Figs 117–118View FIGURES 117–118; coxa unmodified, trochanter with ventral rounded projection, femur proximally with stridulatory pick (modified hair), tibia widened, procursus distally widened and provided with sclerotized scales, bulb with short hooked apophysis and membranous embolar division ( Fig. 117View FIGURES 117–118).

Legs. Without spines and curved hairs, few vertical hairs; retrolateral trichobothrium of tibia 1 at 58%; tibia 1 without prolateral trichobothrium (present on other tibiae); tarsus 1 with 4–5 pseudosegments.

Male (variation). Tibia 1 in 3 other males: 0.67, 0.68, 0.72.

Female. In general similar to male but without humps on sternum. Tibia 1 in 7 females: 0.66–0.70 (mean 0.68). Epigynum simple externally ( Figs 114View FIGURES 110–116, 121View FIGURES 119–122), apparently with pair of small pore plates ( Fig. 122View FIGURES 119–122). ALS with one widened, one pointed, and several cylindrically shaped spigots.

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

Natural history. This species was found in the leaf litter, on the undersides of dead leaves.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Pemona