Calapnita anai, 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: 29-30

publication ID

http://doi.org/ 10.5281/zenodo.273086

publication LSID

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

persistent identifier

http://treatment.plazi.org/id/03B66F68-852E-072D-FF6A-FD002E72F8DF

treatment provided by

Plazi

scientific name

Calapnita anai
status

sp. nov.

Calapnita anai   sp. nov. Figs 11–12 View FIGURES 3 – 12 , 107–119 View FIGURES 107 – 111 View FIGURES 112 – 119

Calapnita phasmoides   ” (misidentification): Huber 2011: 59 (only specimens assigned tentatively from Sumatra and Java).

Diagnosis. Males are easily distinguished from most congeners (except C. phasmoides   and C. deelemanae   ) by simple appendix with small subdistal side-branch ( Fig. 110 View FIGURES 107 – 111 ); from C. phasmoides   and C. deelemanae   by tip of procursus (not strongly bent; indistinct retrolateral hump; dorsally gradually widening; Figs 107–109 View FIGURES 107 – 111 ); females of these three species may be indistinguishable externally; internally, the round pore plates close together and the straight anterior margin ( Fig. 111 View FIGURES 107 – 111 ) may be distinctive.

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

Material examined. Holotype. INDONESIA-SUMATRA: ♂, ZFMK (Ar 16016), West Sumatra, Lembah Anai   Forest Reserve , forest along stream (0.472°S, 100.363°E), 600 m a.s.l., 19.x.2009 (S. Sutono). GoogleMaps  

Other material. INDONESIA-SUMATRA: 3♀, ZFMK (Ar 16016), together with holotype; 3♂ 5♀ in absolute ethanol, ZFMK (Ind 134), same data.

SINGAPORE: 2♂ 1♀, ZFMK ( Ar 16017), MacRitchie Reservoir Park (1°21.3’N, 103°48.8’E), 50 m a.s.l., on leaves, 14.ii.2015 (B.A. Huber, J.K.H. Koh, D. Court) GoogleMaps   ; 5♂ 4♀ 2 juvs in absolute ethanol, ZFMK (Mal 207), same data GoogleMaps   . 1♀ in absolute ethanol, ZFMK ( Mal 221), Rifle Range (1°21.3’N, 103°47.8’E), 50 m a.s.l., on leaf, 15.ii.2015 (B.A. Huber, D. Court). GoogleMaps  

MALAYSIA: 2♂ 1 juv., ZFMK (Ar 16018), Pahang, Cameron Highlands (4°27.6’N, 101°23.5’E), 1200 m a.s.l., forest along ‘trail 9’, on leaves, 25.ii.2015 (B.A. Huber); 4 juvs in absolute ethanol, ZFMK (Mal 281), same data GoogleMaps   . 1♀ in absolute ethanol, ZFMK (Mal 260), Pahang, Ulu Dong (3°56.2’N, 102°01.9’E), 190 m a.s.l., forest near river, on leaf, 21.ii.2015 (B.A. Huber, A.R.M. Ghazali, K.A. Braima). GoogleMaps  

THAILAND: 1♂ in absolute ethanol, ZFMK (Mal 307), Narathiwat, Hala Bala Wildlife Sanctuary , ‘site 3’ (5°48.5’N, 101°49.4’E), 220 m a.s.l., forest near road, leaf litter, 2.iii.2015 (B.A. Huber, B. Petcharad) GoogleMaps   . 1♀, ZFMK (Ar 16019), Narathiwat, Hala Bala Wildlife Sanctuary , ‘site 2’ (5°48.4’N, 101°48.6’E), 330 m a.s.l., forest near river, on leaves, 2.iii.2015 (B.A. Huber, B. Petcharad) GoogleMaps   . 1♀ in absolute ethanol, ZFMK (Mal 301), Hala Bala Wildlife Sanctuary , ‘site 1’, forest at river near headquarters (5°47.8’N, 101°49.9’E), 90 m a.s.l., on leaf, 1.iii.2015 (B.A. Huber, B. Petcharad) GoogleMaps   . 3♂ 2♀, ZFMK (Ar 16020), Satun, Thaleban National Park (6°42.6’N, 100°10.2’E), forest near headquarters, 110 m a.s.l., on leaves, 5.iii.2015 (B.A. Huber, B. Petcharad) GoogleMaps   ; 2♀ in absolute ethanol, ZFMK (Mal 327), same data. GoogleMaps  

Description. Male (holotype).

MEASUREMENTS. Total body length 5.6, carapace width 1.0. Leg 1: 35.9 (8.4 + 0.4 + 8.5 + 16.6 + 2.0), tibia 2: 6.1, tibia 3: 3.6, tibia 4: 5.5; tibia 1 L/d: 100. Distance PME-PME 300 µm, diameter PME 90 µm, distance PME- ALE ~30 µm; no trace of AME.

COLOR. Entire animal mostly whitish to pale ochre-yellow, patellae and tibia-metatarsus joints slightly darker brown, abdomen monochromous whitish.

BODY. Habitus as in Fig. 11 View FIGURES 3 – 12 ; ocular area barely elevated, each triad on very low hump; carapace without median furrow; clypeus unmodified; sternum as wide as long (0.56), unmodified.

CHELICERAE. As in close relatives (cf. figs 172, 204 in Huber 2011), with pair of scaly apophyses near lamellae ( Fig. 112 View FIGURES 112 – 119 ) and pair of distinct but whitish proximal humps; without modified hairs; without stridulatory ridges.

PALPS. In general similar to C. phasmoides   (cf. figs 194–195 in Huber 2011); tip of trochanter apophysis more strongly curved; procursus rather simple distally, gradually widening in lateral view, with indistinct retrolateral process ( Figs 107–109 View FIGURES 107 – 111 ); appendix with small retrolateral cone between tip and subdistal side branch ( Figs 110 View FIGURES 107 – 111 , 115 View FIGURES 112 – 119 ).

LEGS. Without spines and curved hairs; few vertical hairs; retrolateral trichobothrium on tibia 1 at 2.5%; prolateral trichobothrium absent on tibia 1, present on other tibiae; tarsus 1 apparently with ~30 pseudosegments but only distally fairly visible in dissecting microscope.

Male (variation). Tibia 1 in 8 other males (including “ C. phasmoides   ” male from Sumatra in Huber 2011): 7.4– 8.6 (mean 7.8).

Female. In general similar to male; eye triads slightly closer together (distance PME-PME 250 µm). Tibia 1 in 12 females (including “ C. phasmoides   ” females from Sumatra in Huber 2011): 6.1–7.2 (mean 6.7). Epigynum weakly sclerotized, internal dark structure visible through cuticle near posterior margin; with simple posterior ‘knob’ ( Fig. 119 View FIGURES 112 – 119 ); internal genitalia as in Fig 111 View FIGURES 107 – 111 .

Natural history. At Cameron Highlands, all specimens were collected from banana leaves near the forest edge; no specimen was seen in the forest. Egg-sacs (seen at several localities) consisted of a single row of 9– 12 eggs ( Fig. 12 View FIGURES 3 – 12 ). Webs consisted of a rather dense sheet of silk, but could only be seen against the light when the leaf was viewed from the side.

Distribution. Widely distributed on the Malay Peninsula and West Sumatra ( Fig. 281 View FIGURE 281 ); the single female from Java that was tentatively assigned to C. phasmoides in Huber 2011   may in fact belong to this species.

ZFMK

Zoologisches Forschungsmuseum Alexander Koenig

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Calapnita

Loc

Calapnita anai

Bernhard A. Huber 2017
2017
Loc

Calapnita phasmoides

Huber 2011: 59
2011