Pholcus uludong Huber

Bernard A. Huber, Joseph K. H. Koh, Amir-Ridhwan M. Ghazali, Kamil A. Braima, Olga M. Nuñeza, Charles Leh Moi Ung & Booppa Petch, 2016, New leaf- and litter-dwelling species of the genus Pholcus from Southeast Asia (Araneae, Pholcidae), European Journal of Taxonomy 200, pp. 1-45: 9-13

publication ID

10.5852/ejt.2016.200

publication LSID

lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:404329BA-FD12-4F24-ABB6-0AC78A11DE54

persistent identifier

http://treatment.plazi.org/id/B379B03A-5BA0-4FEF-816D-DE9C3E6068A9

taxon LSID

lsid:zoobank.org:act:B379B03A-5BA0-4FEF-816D-DE9C3E6068A9

treatment provided by

Jeremy

scientific name

Pholcus uludong Huber
status

sp. nov.

Pholcus uludong Huber  sp. nov.

urn:lsid:zoobank.org:act:B379B03A-5BA0-4FEF-816D-DE9C3E6068A9

Figs 8–9View Figs 2 – 9, 15–31View Figs 15 – 19View Figs 20 – 25View Figs 26 – 31, 78View Figs 77 – 80, 84–86View Figs 81 – 86

Diagnosis

Easily distinguished from most similar known relatives (other species of the P. ethagala  group on the Malay Peninsula) by morphology of male palps ( Figs 15–16View Figs 15 – 19; procursus with large flat dorsal process; large appendix distally with two rounded sclerotized elements set with small scales; relatively straight trochanter apophysis similar only to P. phui  ), by large anterior square-shaped structure in female internal genitalia, and by elongate anteriorly converging pore plates ( Figs 18–19View Figs 15 – 19).

Etymology

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

Material examined

Holotype

MALAYSIA: ♂, ZFMK ( Ar 15694), Pahang, Ulu Dong, ‘site 2’ (3.937°N, 102.032°E), 190 m a.s.l., forest near river, leaf litter, 21 Feb. 2015 (B.A. Huber, A.R.M. Ghazali, K.A. Braima)GoogleMaps  .

Other material

MALAYSIA: 7 ♂♂, 6 ♀♀, ZFMK ( Ar 15695–96)GoogleMaps  , and 1 ♂, 1 ♀, MZUM, same data as holotypeGoogleMaps  ; 1 juv. in absolute ethanol, ZFMK ( Mal 261), same dataGoogleMaps  ; 2 ♂♂, 2 ♀♀, ZFMK ( Ar 15697), Ulu Dong, ‘site 1’ (3.942°N, 102.027°E), 190 m a.s.l., forest near river, leaf litter, 20 Feb. 2015 (B.A. Huber, A.R.M. Ghazali, K.A. Braima)GoogleMaps  ; 2 ♀♀, 1 juv., in absolute ethanol, ZFMK ( Mal 250)GoogleMaps  .

Description

Male (holotype)

MEASUREMENTS. Total body length 3.7, carapace width 1.05. Leg 1: 32.4 (7.6 + 0.4 + 7.7 + 14.8 + 1.9), tibia 2: 4.3, tibia 3: 2.9, tibia 4: 4.3; tibia 1 L/d: 88. Distance PME-PME 520 µm, diameter PME 115 µm, distance PME-ALE ~35 µm; AME absent.

COLOR. Carapace ochre-yellow with light brown median V-mark, clypeus light brown, ocular area not darkened; sternum ochre-yellow with slightly darker margins; legs ochre-yellow with darker brown patellae and tibia-metatarsus joints; abdomen ochre-gray with small black marks dorsally and laterally.

BODY. Habitus as in Fig. 8View Figs 2 – 9; ocular area raised and each triad on long stalk ( Figs 20View Figs 20 – 25, 78View Figs 77 – 80); carapace without median furrow; clypeus unmodified; sternum wider than long (0.70/0.54), unmodified. ALS with one widened, one pointed, and six smaller cylindrically-shaped spigots ( Fig. 29View Figs 26 – 31).

CHELICERAE. As in Fig. 17View Figs 15 – 19, with single pair of frontal proximal apophyses; without distal modification; without stridulatory ridges.

PALPS. As in Figs 15–16View Figs 15 – 19, 22View Figs 20 – 25; coxa unmodified; trochanter with very long straight retrolatero-ventral apophysis and small retrolateral apophysis; femur with dorsal and ventral rounded processes; procursus very complex, proximal part with large dorsal flat process with serrated rim ( Figs 23View Figs 20 – 25, 27View Figs 26 – 31); with hinged distal elements; bulb with large appendix ( Figs 24–25View Figs 20 – 25), long slender embolus, and two rounded processes at base of appendix, one partly sclerotized as continuation of proximal bulbal sclerite.

LEGS. Without spines and curved hairs; few vertical hairs; retrolateral trichobothrium on tibia 1 at 3%; prolateral trichobothrium absent on tibia 1, present on other tibiae; tarsus 1 with ~30 pseudosegments, indistinct and apparently irregular. Tarsus 4 comb-hairs as in Fig. 28View Figs 26 – 31.

Male (variation)

Tibia 1 in 9 other males: 6.3–7.8 (mean 7.1).

Female

In general similar to male ( Fig. 9View Figs 2 – 9) but eye triads not on stalks and much closer together than in male ( Fig. 21View Figs 20 – 25; PME-PME distance: 195 µm); clypeus darker brown. Tibia 1 in 9 females: 5.3–5.7 (mean 5.5). Epigynum weakly sclerotized and strongly bulging plate ( Fig. 84View Figs 81 – 86), only posterior rim slightly more sclerotized, with small elongate ‘knob’ ( Figs 18View Figs 15 – 19, 31View Figs 26 – 31); internal genitalia with large anterior square-shaped sclerite visible through cuticle and pair of weakly sclerotized folds more laterally ( Figs 19View Figs 15 – 19, 85–86View Figs 81 – 86). ALS as in male ( Fig. 30View Figs 26 – 31).

Natural history

All specimens were found under large dead leaves on the ground. They barely reacted to disturbance.

Distribution

Known from type locality in Malaysia only ( Fig. 1View Fig. 1).

ZFMK

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

MZUM

MZUM

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