Panjange kubah Huber
Bernhard A. Huber & Charles Leh Moi Ung, 2016, The Panjange nigrifrons group in Borneo (Araneae: Pholcidae): high diversity in Sarawak, apparent absence in Sabah, European Journal of Taxonomy 184, pp. 1-32: 22-25
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|Panjange kubah Huber|
Panjange kubah Huber , sp. nov.
Panjange Bor 109: Huber & Nuñeza 2015: 5, 43–44.
Easily distinguished from most congeners by distinctive transversal sclerite on procursus ( Fig. 70View Figs 69 – 73); from very similar Pa. seowi sp. nov. by other details of procursus (unique prolateral process, Figs 69View Figs 69 – 73, 77–78View Figs 74 – 81; distal element longer, Fig. 70View Figs 69 – 73; absence of prolateral ridges on procursus, Fig. 69View Figs 69 – 73). Females are easily distinguished from Pa. nigrifrons by short scape but difFcult to distinguish externally from other congeners in Sarawak (distinctive shape of pore plates and pair of median sclerites; similar only in Pa. seowi sp. nov.).
Named for the type locality; noun in apposition.
MALAYSIA-BORNEO: holotype, Ƌ, Sarawak, National Park, along Waterfall Trail (1.596– 1.606° N, 110.180–110.187° E), 200–300 m a.s.l., 12 Jul. 2014 (B.A. Huber, S.B. Huber), ZFMK ( Ar 14586)GoogleMaps .
Other material examined
MEASUREMENTS. Total body length 4.5, carapace width 1.2. Leg 1: 42.0 (9.3 + 0.5 + 9.6 + 20.1 + 2.5), tibia 2: 6.1, tibia 3: 3.6, tibia 4: 5.6; tibia 1 L/d: 99. Distance PME-PME 445 µm, diameter PME 105 µm, distance PME –ALE ~45 µm; AME absent.
COLOR. Carapace pale ochre yellow to whitish, posterior mark ( Fig. 63View Figs 61 – 68) lost in ethanol, ocular area and clypeus dark brown (black in life), without black marks in AME area; sternum whitish; legs ochreorange with dark brown patellae and tibia-metatarsus joints; abdomen ochre-gray, with black marks dorsally, monochromous ventrally.
BODY. Habitus as in Figs 63–64View Figs 61 – 68; ocular area raised, each triad on medium long stalk, without pointed process (cf. Fig. 6View Figs 2 – 7); carapace without median furrow; clypeus unmodiFed; sternum wider than long (0.75/0.60), unmodiFed.
CHELICERAE. Similar to close relatives, with proximal pair of processes and distinctively bipartite distal apophyses ( Fig. 71View Figs 69 – 73); without modiFed hairs; without stridulatory ridges.
PALPS. As in Figs 69–70View Figs 69 – 73; coxa unmodiFed; trochanter with slightly curved pointed retrolatero-ventral apophysis; femur with curved Fnger-shaped ventral apophysis; procursus with row of about 17 ventral ridges, with distinctive transversal sclerite and long prolateral process close to large Fat distal element ( Figs 77–78View Figs 74 – 81), with two distinct spiny processes in distal pit ( Fig. 80View Figs 74 – 81); bulb with strong proximal sclerite, slightly curved appendix, and long partly sclerotized embolus with distinct distal fringes ( Figs 74–75View Figs 74 – 81).
LEGS. Without spines and curved hairs; few vertical hairs; retrolateral trichobothrium on tibia 1 at 2%; prolateral trichobothrium absent on tibia 1, present on other tibiae; tarsus 1 with many pseudosegments but only ~10 distally visible in dissecting microscope.
Tibia 1 in 2 other males: 9.1, 9.3. One male with irregular black marks in AME area ( Fig. 6View Figs 2 – 7).
In general similar to male but eye triads on low humps, much closer together (distance PME – PME 230 µm). Tibia 1 in 6 females: 6.9–7.9 (mean 7.4). Epigynum weakly sclerotized plate with variably large and variably sclerotized posterior ‘knob’ ( Figs 72View Figs 69 – 73, 76View Figs 74 – 81, 89View Figs 86 – 94), internal arch and complex transversal folds visible through cuticle; internal genitalia as in Figs 73View Figs 69 – 73, 90–91View Figs 86 – 94.
Most specimens were found in a very limited area close to a waterfall. The domed webs had a diameter of about 15–20 cm and in each case the apex of the dome was attached to the underside of a leaf where the spider rested.
Known from type locality in Sarawak 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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