Calapnita bohol, 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 : 48-49

Calapnita bohol sp. nov. Figs 129–130 , 228–235

Diagnosis. Distinguished from other species of vermiformis group by tip of procursus (ventral flap bilobed; Fig. 228 ) and by oval pore plates in transversal orientation ( Fig. 235 ; similar only in C. bugis ). From C. bario and C. bariengi also by distal cheliceral apophyses clearly bipartite ( Fig. 232 ); from C. saluang and C. bugis also by wide proximal part of bipartite cheliceral apophyses ( Fig. 232 ); from several species also by continuous wide connection between epigynal plate and ‘knob’ ( Fig. 234 ), and by pale male sternum.

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

Material examined. Holotype. PHILIPPINES: ♂, ZFMK (Ar 16046), Bohol Island , near Loboc , at Loboc River (9.651°N, 124.022°E), on leaf, 20 m a.s.l., 4.iii.2014 (B.A. Huber).

Other material. PHILIPPINES: 1♂ 4♀, ZFMK (Ar 16047), same data as holotype ; 3♀ in absolute ethanol, ZFMK (Phi 200), same data . 2♀, ZFMK (Ar 16048), Bohol Island, Rajah Sikatuna ( Magsaysay Park ) (9.705°N, 124.123°E), 430 m a.s.l., forest, on leaves, 6.iii.2014 (B.A. Huber) ; 1♀ 1 juv. in absolute ethanol, ZFMK (Phi 195), same data . 1♂ 1♀ 7 juvs, ZFMK (Ar 16049), Bohol , Garcia Hernandez, Barangay Datag , ‘sites 2–5’ (~ 9.719°N, 124.262°E), 520–550 m a.s.l., 8.vi.2015 (M.R.B. Dacar) . 3♀, ZFMK (Ar 16050), Bohol , Sierra Bullones, Barangay Nan-od , ‘sites 1, 2, 5’ (~ 9.747°N, 124.263°E), 550–610 m a.s.l., 4–5.vi.2015 (M.R.B. Dacar) . 2♀, ZFMK (Ar 16051) and 1♀ 7 juvs, MSU-IIT, Bohol , Valencia, Barangay Marawis , ‘sites 4 & 5’ (~ 9.723°N, 124.201°E), 450 m a.s.l., 11.vi.2015 (M.R.B. Dacar).

Description. Male (holotype)

MEASUREMENTS. Total body length 5.9, carapace width 0.75. Leg 1: 32.4 (8.2 + 0.3 + 7.3 + 14.0 + 2.6), tibia 2: 5.6, tibia 3: 3.5, tibia 4: 6.0; tibia 1 L/d: 122. Distance PME-PME 230 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. 129 ; ocular area barely elevated, each triad on very low hump; carapace without median furrow; clypeus unmodified; sternum slightly wider than long (0.50/0.48), unmodified.

CHELICERAE. As in Figs 232–233 , with pair of bipartite apophyses near lamellae and pair of lateral humps; 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. 230 , with small tubercles and subdistal process; femur as in Fig. 231 , distal process at 35% of femur length; tibia length/diameter 0.62/0.33; procursus as in Figs 228–229 , ventro-distal sclerite bilobed, i.e. with additional prolateral lobe; bulb length 0.39; embolus length 0.70.

LEGS. Without spines and curved hairs; few vertical hairs; retrolateral trichobothrium on tibia 1 at 1.5%; prolateral trichobothrium absent on tibia 1, present on other tibiae; tarsus 1 pseudosegments not seen in dissecting microscope.

Male (variation). Tibia 1 in 2 other males: 7.2, 7.6.

Female. In general similar to male; eye triads slightly closer together (distance PME-PME 210 µm). Tibia 1 in 9 females: 5.7–6.6 (mean 6.1). Epigynum as in Fig. 234 , weakly sclerotized, wide anterior ‘knob’; internal genitalia as in Fig. 235 , with distinctive elongate pore plates in transversal orientation.

Natural history. At the type locality, most specimens were collected from taro leaves at a forest edge near the village. Individual leaves were sometimes shared by an unidentified species of Belisana . At this locality, no specimens were found in the forest.

Distribution. Known from Bohol Island only ( Fig. 284 ).

Figures

FIGURE 284. Known distribution of the Calapnita vermiformis group, part 2 (cf. Fig. 283).

FIGURES 128 – 133. Live specimens, Calapnita vermiformis group. 128. C. loksado sp. nov., ♂ from Loksado. 129 – 130. C. bohol sp. nov., ♂ and ♀ with egg-sac from near Loboc. 131. C. dinagat sp. nov., ♂ (with mite; arrow) from near Libjo. 132 – 133. C. nunezae sp. nov., ♀ with egg-sac, and ♂ and ♀ at night from Katibawasan.

FIGURES 220 – 235. Calapnita loksado sp. nov. (220 – 227; ♂: ZFMK, Ar 16045; ♀: RMNH, ARA 17428) and C. bohol sp. nov. (228 – 235; ZFMK, Ar 16047). 220 – 221, 228 – 229. Left procursi, prolateral and retrolateral views. 222, 230. Left palpal trochanters, retrolateral views. 223, 231. Left palpal femora, prolateral views. 224 – 225, 232 – 233. Right male chelicerae, frontal and lateral views. 226, 234. Epigyna, ventral views. 227, 235. Cleared female genitalia, dorsal views. Scale lines: 0.3 mm.