Calapnita mae, 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 : 51-55

publication ID

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

publication LSID

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

DOI

https://doi.org/10.5281/zenodo.6040251

persistent identifier

https://treatment.plazi.org/id/03B66F68-8500-0706-FF6A-FF122AF0FF77

treatment provided by

Plazi

scientific name

Calapnita mae
status

sp. nov.

Calapnita mae View in CoL sp. nov. Figs 245–253 View FIGURES 236 – 253

Diagnosis. Distinguished from other species of vermiformis group by distinctive prolateral process on procursus ( Fig 246 View FIGURES 236 – 253 ), by shape of sclerotized ventral flap (S-shaped ridge in prolateral view; complex shape in dorsal view; Figs 245–246 View FIGURES 236 – 253 ), and by oval pore plates converging anteriorly ( Fig. 253 View FIGURES 236 – 253 ). From C. bario and C. bariengi also by distal cheliceral apophyses clearly bipartite ( Fig. 249 View FIGURES 236 – 253 ); from C. saluang and C. bugis also by wide proximal part of bipartite cheliceral apophyses ( Fig. 249 View FIGURES 236 – 253 ); from several species also by dark male sternum and by continuous wide connection between epigynal plate and ‘knob’ ( Fig. 252 View FIGURES 236 – 253 ).

Etymology. Named for Mae A. Responte who collected all available specimens of this species; the name is treated as a noun in apposition (to avoid the awkward ‘maeae’).

Material examined. Holotype. PHILIPPINES: ♂, ZFMK (Ar 16054), Mindanao , Davao Oriental, Mount Hamiguitan Range Wildlife Sanctuary (access San Isidro ), ‘site 2’ (6.724°N, 126.175°E), 790 m a.s.l., 10.ii.2015 (M.A. Responte). GoogleMaps

Other material. PHILIPPINES: 4♀, ZFMK (Ar 16055), and 1♀ 12 juvs, MSU-IIT, same data as holotype GoogleMaps ; 1♂ 7♀ 8 juvs, ZFMK ( Ar 16059), same locality but ‘site 1’ (6.720°N, 126.172°E), 490 m a.s.l., 9.ii.2015 (M.A. Responte) GoogleMaps . 4♂ 2♀, ZFMK (Ar 16056), and 1♂ 4 juvs, MSU-IIT, Mount Hamiguitan Range Wildlife Sanctuary (access Governor Generoso ), ‘site 1’ (6.690°N, 126.153°E), 250 m a.s.l., 12.ii.2015 (M.A. Responte) GoogleMaps ; 3♂ 5♀ 22 juvs, ZFMK ( Ar 16057), same locality but ‘site 2’ (6.685°N, 126.158°E), 360 m a.s.l., 13.ii.2015 (M.A. Responte) GoogleMaps ; 2♂ 4 juvs, ZFMK ( Ar 16058), same locality but ‘site 3’ (6.681°N, 126.159°E), 580 m a.s.l., 13.ii.2015 (M.A. Responte) GoogleMaps . 1♂ 1♀ 2 juvs, ZFMK (Ar 16060), Davao Oriental, Tarragona Distr., Mount Mayo , ‘site 1’ (7.068°N, 126.290°E), 700 m a.s.l., 14.xii.2014 (M.A. Responte) GoogleMaps ; 1♂ 7♀ 6 juvs, ZFMK (Ar 16061), Mount Mayo , ‘site 2’ (7.069°N, 126.290°E), 800 m a.s.l., 15.xii.2014 (M.A. Responte) GoogleMaps ; 2♀, ZFMK (Ar 16062), Mount Mayo , ‘site 3’ (7.071°N, 126.290°E), 900 m a.s.l., 16.xii.2014 (M.A. Responte). GoogleMaps

Description. Male (holotype)

MEASUREMENTS. Total body length 6.3, carapace width 0.85. Leg 1 missing, tibia 2: 6.0, tibia 3: 3.1, tibia 4: 6.4. Distance PME-PME 230 µm, diameter PME 80 µm, distance PME-ALE ~30 µm; no trace of AME.

COLOR. Entire animal mostly pale gray to whitish, sternum darker, legs slightly yellowish with brown patellae and tibia-metatarsus joints.

BODY. Habitus as in C. nunezae (cf. Fig. 133 View FIGURES 128 – 133 ); ocular area barely elevated, each triad on very low hump; carapace without median furrow; clypeus unmodified; sternum as wide as long (0.50), unmodified.

CHELICERAE. As in Figs 249–250 View FIGURES 236 – 253 , 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. 251 View FIGURES 236 – 253 , with small tubercles on subdistal hump; femur as in Fig. 248 View FIGURES 236 – 253 , distal process at 26% of femur length; tibia length/diameter 0.53/0.31; procursus as in Figs 245–247 View FIGURES 236 – 253 , with prolateral process, ventro-distal flat sclerite with distinctive prolateral oblique ridge (arrow in Fig. 245 View FIGURES 236 – 253 ); bulb length 0.37; embolus length 0.50.

LEGS. Without spines and curved hairs; few vertical hairs.

Male (variation). Tibia 1 in 5 other males: 7.1–7.7 (mean 7.4).

Female. In general similar to male but sternum whitish; eye triads barely closer together (distance PME-PME 220 µm). Tibia 1 in 16 females: 5.2–6.5 (mean 5.9). Epigynum as in Fig. 252 View FIGURES 236 – 253 , weakly sclerotized, wide anterior ‘knob’; internal genitalia as in Fig. 253 View FIGURES 236 – 253 , with oval pore plates converging anteriorly.

Distribution. Known from two localities in southeastern Mindanao ( Fig. 284 View FIGURE 284 ).

Calapnita nunezae sp. nov.

Figs 132–133 View FIGURES 128 – 133 , 254–262 View FIGURES 254 – 271 , 272–280 View FIGURES 272 – 280

Calapnita vermiformis View in CoL ” (misidentification; only specimens from Mindanao): Deeleman-Reinhold 1986: 212. Huber 2011: 48.

Diagnosis. Distinguished from other species of vermiformis group by distinctive prolateral process on procursus ( Fig. 255 View FIGURES 254 – 271 ) and by massive rather than flat ventral flap (similar but much larger in C. maragusan ; compare Figs 255 and 264 View FIGURES 254 – 271 ). From C. bario and C. bariengi also by distal cheliceral apophyses clearly bipartite ( Fig. 259 View FIGURES 254 – 271 ); from several species also by dark male sternum, by continuous wide connection between epigynal plate and ‘knob’ ( Fig. 261 View FIGURES 254 – 271 ), and by round pore plates ( Fig. 262 View FIGURES 254 – 271 ).

Etymology. The species is named for Dr. Olga M. Nuñeza from Mindanao State University-Iligan Institute of Technology, in recognition of her help before and during the Philippines expedition 2014.

Material examined. Holotype. PHILIPPINES, Camiguin Island: ♂, ZFMK (Ar 16063), Katibawasan Falls (9.215°N, 124.720°E), 300 m a.s.l., on leaf, 19.ii.2014 (B.A. Huber, P.N. Banaag). GoogleMaps

Other material. PHILIPPINES, Camiguin Island: 11♂ 10♀ 1 juv., ZFMK (Ar 16064–65), and 1♂ 1♀, MSU- IIT, same data as holotype GoogleMaps ; 2♀ 1 juv. in absolute ethanol, ZFMK (Phi 238), same data GoogleMaps . 2♂ 4♀ 3 juvs, ZFMK ( Ar 16066), same locality but 9.2132°N, 124.7181°E, 5.v.2014 (E.P. Mondejar) GoogleMaps . 2♂ 1♀, ZFMK ( Ar 16067), Camiguin Island, Mount Hibok Hibok (9.196°N, 124.692°E), 600 m a.s.l., on leaves, 18.ii.2014 (B.A. Huber, P.N. Banaag) GoogleMaps ; 1♀ 4 juvs, in absolute ethanol, ZFMK (Phi 242), same data GoogleMaps .

PHILIPPINES, Mindanao: 3♂ 4♀, ZFMK (Ar 16068), Bukidnon, CEDAR ( Center for Ecological Development and Recreation ) (8.251°N, 125.034°E), 760 m a.s.l., forest along river, on leaves, 16.ii.2014 (B.A. Huber, E.P. Mondejar) GoogleMaps ; 2♂ 1 juv. in absolute ethanol, ZFMK (Phi 248), same data GoogleMaps . 18♂ 42♀ 27 juvs (4 vials), ZFMK ( Ar 16069–72), and 1♂ 1♀, MSU-IIT, same locality at 8.249– 8.252°N, 125.026 GoogleMaps –125.041°E, 15.xi.2014 – 7.ii.2015 (E.P. Mondejar). 5♀ 2 juvs (2 vials), ZFMK (Ar 16073–74), Bukidnon, Imbayao (8.134°N, 125.030°E), 9–10.ii.2015 (E.P. Mondejar) GoogleMaps . 2♂ 2♀, ZFMK (Ar 16075), Davao del Sur, Malagos Watershed (7.184°N, 125.415°E), 390 m a.s.l., forest along river, on leaves, 14.ii.2014 (B.A. Huber, E.P. Mondejar) GoogleMaps . 3♂ 5♀, ZFMK (Ar 16076), Mount Matutum, Kawit Forest , ‘site 1’ (6.338°N, 125.104°E), 950 m a.s.l., along brook, on leaves, 13.ii.2014 (B.A. Huber, E.P. Mondejar) GoogleMaps ; 1♀ 1 juv. in absolute ethanol, ZFMK (Phi 270), same data GoogleMaps . 5♂ 6♀, ZFMK (Ar 16077), Bukidnon, Santo Domingo (7.782°N, 125.397°E), 560 m a.s.l., forest remnant along brook, on leaves, 8–9.ii.2014 (B.A. Huber, E.P. Mondejar) GoogleMaps ; 1♀ in absolute ethanol, ZFMK (Phi 283), same data GoogleMaps . 2♂, ZFMK (Ar 16078), Bukidnon, near Santo Domingo , Malangob (7.789°N, 125.384°E), 570 m a.s.l., forest along brook, on leaves, 9.ii.2014 (B.A. Huber, E.P. Mondejar) GoogleMaps . 2♂ 2♀, ZFMK (Ar 16079), Bukidnon, near Santo Domingo , Penolohan (7.769°N, 125.420°E), 640 m a.s.l., forest above Salug River , on leaves, 8.ii.2014 (B.A. Huber, E.P. Mondejar). GoogleMaps

Description. Male (holotype)

MEASUREMENTS. Total body length 5.9, carapace width 0.80. Leg 1: 30.0 (8.5 + 0.4 + 7.6 + 13.8 + 2.7), tibia 2: 6.0, tibia 3: 3.7, tibia 4: 6.5; tibia 1 L/d: 109. Distance PME-PME 210 µm, diameter PME 90 µm, distance PME- ALE ~30 µm; no trace of AME.

COLOR. Entire animal mostly pale gray to whitish, sternum darker, legs slightly yellowish with brown patellae and tibia-metatarsus joints.

BODY. Habitus as in Fig. 133 View FIGURES 128 – 133 ; ocular area barely elevated, each triad on very low hump; carapace without median furrow; clypeus unmodified; sternum as wide as long (0.50), unmodified.

CHELICERAE. As in Figs 259–260 View FIGURES 254 – 271 , with pair of bipartite apophyses near lamellae, pair of lateral processes; without modified hairs; without stridulatory ridges.

PALPS. In general similar to C. vermiformis (cf. figs 139 and 140 in Huber 2011) but smaller; trochanter apophysis as in Fig. 257 View FIGURES 254 – 271 , with tiny tubercles; femur as in Fig. 258 View FIGURES 254 – 271 , distal process at 28% of femur length; tibia length/diameter 0.53/0.31; procursus as in Figs 254–256 View FIGURES 254 – 271 , with semitransparent prolateral process, with globular ventro-distal sclerite; bulb length 0.34; embolus length 0.55.

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 pseudosegments not visible in dissecting microscope.

Male (variation). Tibia 1 in 23 other males: 6.9–8.0 (mean 7.6). In males from Mount Matutum and Santo Domingo the globular ventro-distal sclerite on the procursus is slightly larger.

Female. In general similar to male but sternum whitish; eye triads slightly closer together (distance PME-PME 200 µm). Tibia 1 in 29 females: 5.6–6.7 (mean 6.2). Epigynum as in Figs 261 View FIGURES 254 – 271 and 280 View FIGURES 272 – 280 , weakly sclerotized with wide anterior ‘knob’; internal genitalia as in Fig. 262 View FIGURES 254 – 271 , with almost round pore plates.

Natural history. At the type locality, this species was found mostly on Araceae leaves. At Malangob, it shared plants (and sometimes individual leaves) with Pholcus domingo . When disturbed, specimens did not vibrate but pressed their bodies against the leaf surface. If disturbance persisted, they run away and/or reluctantly dropped on a silk line. Two egg-sacs contained 9 and 13 eggs respectively; proximally, a few eggs were side by side, but the distal 4– 6 eggs were in a single row ( Fig. 132 View FIGURES 128 – 133 ).

Distribution. Widely distributed in Mindanao (incl. Camiguin Island), but apparently not reaching eastern Mindanao ( Fig. 284 View FIGURE 284 ).

ZFMK

Zoologisches Forschungsmuseum Alexander Koenig

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Calapnita

Loc

Calapnita mae

Bernhard A. Huber 2017
2017
Loc

Calapnita vermiformis

Huber 2011: 48
2011
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