Calapnita magaseng , Bernhard A. Huber, 2017

Bernhard A. Huber, 2017, Revision and cladistic analysis of the Southeast Asian leaf-dwelling spider genus Calapnita Simon (Araneae, Pholcidae), Zootaxa 4219 (1), pp. 1-63: 37

publication ID

10.5281/zenodo.273086

publication LSID

lsid:zoobank.org:pub:0FA0F51A-3868-4F13-A93D-E34CA5A689F8

persistent identifier

http://treatment.plazi.org/id/03B66F68-8516-0714-FF6A-FDE92F59F875

treatment provided by

Plazi

scientific name

Calapnita magaseng
status

sp. nov.

Calapnita magaseng  sp. nov. Figs 122–123View FIGURES 120 – 127, 156–163View FIGURES 156 – 171

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. 160View FIGURES 156 – 171); also by tip of procursus (ventral flap strongly protruding towards ventral; Figs 156–157View FIGURES 156 – 171). From C. bario  and C. bariengi  also by distal cheliceral apophyses clearly bipartite ( Fig. 160View FIGURES 156 – 171); from several species also by narrow and distinct epigynal ‘knob’ ( Fig. 162View FIGURES 156 – 171), and by oval pore plates very close together ( Fig. 163View FIGURES 156 – 171).

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

Material examined. Holotype. MALAYSIA-BORNEO: ♂, ZFMKAbout 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).GoogleMaps 

Other material. MALAYSIA-BORNEO: 2♂ 4♀, ZFMKAbout ZFMK (Ar 16027), same data as holotypeGoogleMaps  ; 5♀ in absolute ethanol, ZFMKAbout ZFMK (Bor 219), same dataGoogleMaps  . 1♂ 1♀, ZFMKAbout 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).GoogleMaps 

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. 122View FIGURES 120 – 127; 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 160–161View FIGURES 156 – 171, 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. 159View FIGURES 156 – 171; femur as in Fig. 158View FIGURES 156 – 171, ventral processes widely spaced (distal process at 51% of femur length); tibia length/diameter 0.60/0.28; procursus as in Figs 156–157View FIGURES 156 – 171, 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. 162View FIGURES 156 – 171, weakly sclerotized triangular plate with small and slender anterior ‘knob’; internal genitalia as in Fig. 163View FIGURES 156 – 171, with pore plates close together.

Distribution. Known from two localities in western Sarawak only ( Fig. 283View FIGURE 283).

ZFMK

Zoologisches Forschungsmuseum Alexander Koenig

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Calapnita

Loc

Calapnita magaseng

Bernhard A. Huber 2017

2017
Loc

Calapnita vermiformis

Huber 2011: 48

2011