Pholcus kuhapimuk Huber

Berhard A. Huber, Booppa Petchard, Charles Leh Moi Ung, Joseph K. H. Koh & Amir R. M. Ghazali, 2016, The Southeast Asian Pholcus halabala species group (Araneae, Pholcidae): new data from field observations and ultrastructure, European Journal of Taxonomy 190, pp. 1-55: 17-21

publication ID

10.5852/ejt.2016.190

publication LSID

lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:BE92596B-62D9-46CD-8486-CF6B36C640B11

persistent identifier

http://treatment.plazi.org/id/851588EA-3FD5-4800-9F4D-33BAE6E2E0F9

taxon LSID

lsid:zoobank.org:act:851588EA-3FD5-4800-9F4D-33BAE6E2E0F9

treatment provided by

Jeremy

scientific name

Pholcus kuhapimuk Huber
status

sp. nov.

Pholcus kuhapimuk Huber  , sp. nov.

urn:lsid:zoobank.org:act:851588EA-3FD5-4800-9F4D-33BAE6E2E0F9

Figs 49–51 View Figure , 58–62 View Figure , 96–98 View Figure

Diagnosis

Easily distinguished from most similar known relative ( Ph. khaolek  sp. nov.) by morphology of male palps ( Figs 58–59 View Figure ; shapes of male palpal tarsus and procursus tip, small uncus, slender appendix) and by female internal genitalia ( Figs 61–62 View Figure ; absence of median triangular sclerite). From other putatively close relatives also by combination of pale coloration ( Figs 49–51 View Figure ), shape of male palpal trochanter apophysis (curved, proximally wide, distally pointed; Fig. 59 View Figure ), and small round pore plates far apart ( Fig. 62 View Figure ).

Etymology

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

Type material

THAILAND: holotype, ♂, ZFMK ( Ar 15026), Yala, Wat Kuhapimuk (6°31.7' N, 101°13.5' E), 40 m a.s.l., on wall in cave entry area, 4 Mar. 2015 (B.A. Huber, B. Petcharad)GoogleMaps  .

Other material examined

THAILAND: 3 ♂♂, 6 ♀♀, ZFMK (2 ♂♂, 5 ♀♀, Ar 15027)GoogleMaps  and PSUZC (1 ♂, 1 ♀), same data as holotypeGoogleMaps  ; 1 ♂, 4 ♀♀, 4 juvs, in absolute ethanol, ZFMK ( Mal 324), same dataGoogleMaps  .

Assigned tentatively

THAILAND: 1 ♀, 2 juvs, in absolute ethanol, ZFMK ( Mal 329), Satun  , Thaleban National Park (6°43.58'N, 100°09.74' E), at rocks near cave entrance, 100 m a.s.l., 5 Mar. 2015 (B.A. Huber, B. Petcharad)GoogleMaps  .

Description

Male (holotype)

MEASUREMENTS. Total body length 5.0, carapace width 1.4. Leg 1: 53.3 (12.9 + 0.5 + 12.9 + 25.0 + 2.0), tibia 2: 8.6, tibia 3: 5.4, tibia 4: 7.3; tibia 1 L/d: 98. Distance PME-PME 265 µm, diameter PME 115 µm, distance PME-ALE ~35 µm; distance AME-AME 35 µm; diameter AME 60 µm.

COLOR. Carapace pale ochre-grey with pair of brown marks posteriorly; ocular area slightly darker, clypeus not darkened; sternum pale grey with narrow dark margins; legs pale ochre-yellow with dark brown patellae and tibia-metatarsus joints; abdomen monochromous pale gray.

BODY. Habitus as in Fig. 49 View Figure ; ocular area slightly raised, with slightly stronger hairs behind each PME; carapace without median furrow; clypeus unmodified; sternum wider than long (1.00/0.67), unmodified.

CHELICERAE. As in Fig. 60 View Figure , with pair of distal frontal apophyses provided with one or two modified hairs each, pair of rounded lateral processes, and pair of small indistinct proximal frontal humps.

PALPS. As in Figs 58–59 View Figure ; coxa unmodified; trochanter with large but weakly sclerotized retrolateroventral apophysis and low retrolateral hump; femur proximally widened on ventral side, with small retrolatero-dorsal apophysis; tarsus with short conical dorsal elongation carrying subdistal tarsal organ; procursus rather simple, ventral ‘knee’ with distal process; bulb with distinctive small uncus and slender appendix; weakly sclerotized short embolus.

LEGS. Without spines and curved hairs; few vertical hairs; retrolateral trichobothrium on tibia 1 at 6%; prolateral trichobothrium absent on tibia 1, present on other tibiae; tarsus 1 with> 30 pseudosegments, distally fairly distinct.

Male (variation)

Tibia 1 in 2 other males: 11.1, 12.6.

Female

In general similar to male ( Fig. 51 View Figure ) but without stronger hairs behind PME; eye triads closer together than in male (PME-PME distance: 185 µm). Tibia 1 in 7 females: 8.1–9.8 (mean 8.7). Epigynum weakly sclerotized bulging area, only posterior margin more strongly sclerotized, apparently without ‘knob’, or ‘knob’ hidden below membranous flap ( Figs 61 View Figure , 96–97 View Figure ); internal genitalia as in Figs 62 View Figure and 98 View Figure , with small round pore plates far from each other. The specimens from Thaleban National Park are assigned tentatively because no male specimen is available from this locality.

Natural history

At both localities, specimens were only found on rocks at the cave entrances but not deeper in the caves. The spiders were extremely cryptic, tightly pressed against the rock surface and barely visible even at close distance.

Distribution

Known from two localities in southern Thailand only ( Fig. 57 View Figure ; specimens from Thaleban National Park assigned tentatively).

ZFMK

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

PSUZC

PSUZC

AME

USA, Florida, Gainesville, University of Florida, Florida Museum of Natural History, Allyn Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Pholcus