Calapnita magaseng Huber, 2017, sp. nov.
Creators: name: Bernhard A. Huber
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Pholcidae
Calapnita
Calapnita magaseng

description: Calapnita magaseng sp. nov. Figs 122–123, 156–163
“ Calapnita vermiformis ” (misidentification; only specimens from Semengoh Arboretum): Huber 2011: 48.
Diagnosis. Easily distinguished from other species of vermiformis group by strong lateral processes on male chelicerae (Fig. 160); also by tip of procursus (ventral flap strongly protruding towards ventral; Figs 156–157). From C. bario and C. bariengi also by distal cheliceral apophyses clearly bipartite (Fig. 160); from several species also by narrow and distinct epigynal ‘knob’ (Fig. 162), and by oval pore plates very close together (Fig. 163).
Etymology. The species name is derived from the type locality; noun in apposition.
Material examined. Holotype. MALAYSIA-BORNEO: ♂, ZFMK (Ar 16026), Sarawak, Mount Penrissen near Borneo Highland Resort, Ma Gaseng Trail (1.124– 1.127°N, 110.217°E), 870–930 m a.s.l., underside of leaf, 14.vii.2014 (B.A. Huber, S.B. Huber).
Other material. MALAYSIA-BORNEO: 2♂ 4♀, ZFMK (Ar 16027), same data as holotype; 5♀ in absolute ethanol, ZFMK (Bor 219), same data. 1♂ 1♀, ZFMK (Ar 16028), Sarawak, Semengoh Arboretum, Masing Trail (1.397– 1.399°N, 110.317– 110.322°E), 60–80 m a.s.l., undersides of leaves, 17.vii.2014 (B.A. Huber).
Description. Male (holotype)
MEASUREMENTS. Total body length 4.6, carapace width 0.7. Leg 1: 29.1 (7.2 + 0.3 + 6.5 + 12.6 + 2.5), tibia 2: 5.1, tibia 3: 3.2, tibia 4: 5.6; tibia 1 L/d: 108. Distance PME-PME 200 µm, diameter PME 90 µm, distance PME- ALE ~30 µm; no trace of AME.
COLOR. Entire animal pale gray to whitish, legs slightly yellowish with brown patellae and tibia-metatarsus joints.
BODY. Habitus as in Fig. 122; ocular area barely elevated, each triad on very low hump; carapace without median furrow; clypeus unmodified; sternum slightly wider than long (0.50/0.44), unmodified.
CHELICERAE. As in Figs 160–161, with bipartite apophyses near lamellae (proximal processes more distinct in holotype than in drawn male), pair of strong lateral processes; without modified hairs; without stridulatory ridges.
PALPS. In general similar to C. vermiformis (cf. figs 139 and 140 in Huber 2011); trochanter apophysis as in Fig. 159; femur as in Fig. 158, ventral processes widely spaced (distal process at 51% of femur length); tibia length/diameter 0.60/0.28; procursus as in Figs 156–157, with simple ventro-distal flat sclerite; bulb length 0.39; embolus length 0.70; embolus tip with transparent fringes.
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 pseudosegments barely visible in dissecting microscope.
Male (variation). Tibia 1 in 3 other males: 6.7, 6.8, 7.0. Proximal processes of bipartite cheliceral apophyses variably long.
Female. In general similar to male; eye triads slightly closer together (distance PME-PME 180 µm). Tibia 1 in 5 females: 5.5–6.2 (mean 6.0). Epigynum as in Fig. 162, weakly sclerotized triangular plate with small and slender anterior ‘knob’; internal genitalia as in Fig. 163, with pore plates close together.
Distribution. Known from two localities in western Sarawak only (Fig. 283).
description: Published as part of Bernhard A. Huber, 2017, Revision and cladistic analysis of the Southeast Asian leaf-dwelling spider genus Calapnita Simon (Araneae, Pholcidae), pp. 1-63 in Zootaxa 4219 (1) on page 37, DOI: 10.5281/zenodo.273086