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
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|Pholcus uludong Huber|
Pholcus uludong Huber sp. nov.
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).
The species name is derived from the type locality; noun in apposition.
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 .
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.
Tibia 1 in 9 other males: 6.3–7.8 (mean 7.1).
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).
All specimens were found under large dead leaves on the ground. They barely reacted to disturbance.
Known from type locality in Malaysia only ( Fig. 1View Fig. 1).
Germany, Bonn, Zoologische Forschungsinstitut und Museum "Alexander Koenig"
USA, Florida, Gainesville, University of Florida, Florida Museum of Natural History, Allyn Museum
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