Canaima guaquira Huber, 2020

Huber, Bernhard A. & Villarreal, Osvaldo, 2020, On Venezuelan pholcid spiders (Araneae, Pholcidae), European Journal of Taxonomy 718, pp. 1-317 : 31-33

publication ID

https://doi.org/10.5852/ejt.2020.718.1101

publication LSID

lsid:zoobank.org:pub:F9E9A91E-488C-4DB1-9361-E788E9AC5BC1

DOI

https://doi.org/10.5281/zenodo.4343851

persistent identifier

https://treatment.plazi.org/id/ABAD982F-9BF4-4CE6-BF7D-934296A0224E

taxon LSID

lsid:zoobank.org:act:ABAD982F-9BF4-4CE6-BF7D-934296A0224E

treatment provided by

Valdenar

scientific name

Canaima guaquira Huber
status

sp. nov.

Canaima guaquira Huber sp. nov.

urn:lsid:zoobank.org:act:ABAD982F-9BF4-4CE6-BF7D-934296A0224E

Figs 54–55 View Figs 50–57 , 85–88 View Figs 85–88 , 96–98 View Figs 93–101 , 1034

Diagnosis

Distinguished from known congeners by armature of male chelicerae ( Fig. 87 View Figs 85–88 ; three pairs of processes, with highly distinctive distal pair of slender curved processes), by shape of procursus ( Fig. 86 View Figs 85–88 ; distinctive dorso-distal sclerite), by dorsal process on genital bulb (arrow in Fig. 86 View Figs 85–88 ), and by internal female genitalia ( Figs 88 View Figs 85–88 , 98 View Figs 93–101 ): anterior bilobed sclerite (arrows in Fig. 88 View Figs 85–88 ); median arc between pore plates; pore plates far apart; note that female of C. merida Huber, 2000 is unknown.

Etymology

The species name refers to the type locality; noun in apposition.

Type material

VENEZUELA – Yaracuy • ♂ holotype, ZFMK (Ar 21834), Guaquira , ‘site 1’ (10.2951° N, 68.6535° W), 120 m a.s.l., forest along stream, 16 Feb. 2020 (B.A. Huber, O. Villarreal M., Q. Arias C.) GoogleMaps .

Other material examined

VENEZUELA – Yaracuy • 3 ♂♂, 6 ♀♀, ZFMK (Ar 21835), and 8 ♀♀ in pure ethanol, ZFMK (Ven20- 158), same collection data as for holotype GoogleMaps 1 ♂, 6 ♀♀, ZFMK (Ar 21836), Guaquira , ‘site 2’ (10.2807° N, 68.6530° W), 150 m a.s.l., forest along stream, 17 Feb. 2020 (B.A. Huber, O. Villarreal M., Q. Arias C.) GoogleMaps .

Description

Male (holotype)

MEASUREMENTS. Total body length 1.1, carapace width 0.55. Distance PME–PME 35 µm; diameter PME 60 µm; distance PME–ALE 30 µm; AME absent. Leg 1: 8.45 (2.0 +0.2 +2.2+3.15 + 0.9), tibia 2: 1.1, tibia 3: 0.85, tibia 4: 1.1; tibia 1 L/d: 49.

COLOR (in ethanol). Prosoma and legs ochre-yellow, sternum whitish, legs without dark rings; abdomen pale greenish gray, dorsally with darker bluish marks.

BODY. Habitus as in Fig. 54 View Figs 50–57 . Ocular area slightly raised. Carapace with distinct thoracic groove. Clypeus slightly more protruding than in female and with sclerotized rim. Sternum wider than long (0.40/0.30), with pair of small but distinct anterior processes. Abdomen oval.

CHELICERAE. As in Fig. 87 View Figs 85–88 , with very short entapophyses and three pairs of frontal processes; highly distinctive distal pair of slender curved processes.

PALPS. As in Figs 85–86 View Figs 85–88 ; coxa with distinct retrolateral-ventral apophysis, trochanter with low ventral process, femur proximally with retrolateral process, distally with small ventral process (similar to C. arima ; cf. Huber 2000: fig. 1322); procursus with distinctive dorso-distal sclerite and membranous elements; genital bulb with semitransparent dorsal process (arrow in Fig. 86 View Figs 85–88 ), embolar process whitish, weakly sclerotized.

LEGS. Without spines and curved hairs; with higher than usual density of vertical hairs on tibiae; retrolateral trichobothrium of tibia 1 at 25%; prolateral trichobothrium absent on tibia 1; tarsus 1 with ~13 pseudosegments.

Male (variation)

Tibia 1 in five males (incl. holotype): 1.9–2.4 (mean 2.14).

Female

In general similar to male ( Fig. 55 View Figs 50–57 ) but without humps on sternum, clypeus less protruding and rim not sclerotized, few vertical hairs on leg tibiae. Tibia 1 in 13 females: 1.50–1.75 (mean 1.65). Epigynum ( Fig. 96 View Figs 93–101 ) slightly protruding, anterior plate medially whitish, laterally brown, sclerotized; large light brown posterior plate. Internal genitalia ( Figs 88 View Figs 85–88 , 97–98 View Figs 93–101 ) with anterior bilobed sclerite (arrows in Fig. 88 View Figs 85–88 ), median arc between pore plates, pore plates far apart, and large anterior transparent receptacle.

Distribution

Known from type locality only, in Venezuela , Yaracuy (Fig. 1034).

Natural history

Most specimens were collected in dead bamboo sheaths on the ground but the species seemed to be common in the general forest leaf litter.

ZFMK

Germany, Bonn, Zoologische Forschungsinstitut und Museum "Alexander Koenig"

ZFMK

Zoologisches Forschungsmuseum Alexander Koenig

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Canaima