Calapnita subphyllicola Deeleman-Reinhold, 1986

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 : 25

Calapnita subphyllicola Deeleman-Reinhold, 1986

Figs 10 , 81–97

Calapnita subphyllicola Deeleman-Reinhold 1986b: 217 , figs 40–44 (♂ ♀). Huber 2011: 61, figs 65, 74, 202–206.

Diagnosis. Males can be easily distinguished from closest known relatives ( C. anai , C. deelemanae , C. phasmoides ) by bulbal appendix (three distinct tines instead of just one with tiny subdistal process; Figs 81–88 , 93 ); from C. anai and C. phasmoides also by distally strongly bent procursus (figs 202–203 in Huber 2011; very similar to C. deelemanae ). Females of these four species appear indistinguishable externally, but the crescentshaped internal membranous ‘sac’ of C. subphyllicola (fig. 206 in Huber 2011) might be distinctive.

New material examined. PHILIPPINES, Mindanao: 1♂ 2♀ 2 juvs, ZFMK ( Ar 16003), Davao del Sur Prov., 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) . 11♂ 17♀, ZFMK (Ar 16004–05), and 1♂ 1♀, MSU-IIT, Bukidnon Prov., 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) ; 3♀ in absolute ethanol, ZFMK (Phi 282), same data . 5♂ 2♀, ZFMK (Ar 16006), Bukidnon Prov., 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) ; 1♂ in absolute ethanol, ZFMK (Phi 274), same data . 4♂ 2♀, ZFMK (Ar 16007), Bukidnon Prov., 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) ; 2♀ in absolute ethanol, ZFMK (Phi 276), same data .

Assigned tentatively. PHILIPPINES, Mindanao: 2♀, ZFMK ( Ar 16 008), Maguindanao, Camp Abubakar (7.569°N, 124.320°E), 15.xii.2014 (N.U. Elias) . 5♂ 14♀, ZFMK (Ar 16009), and 1♂ 1♀ 15 juvs, MSU-IIT, Camp Abubakar (7.570°N, 124.320°E), 14.xii.2014 (N.U. Elias) . 6♂ 8♀ 14 juvs, ZFMK (Ar 16010), Marawi City, Mount Mupo (8.017°N, 124.296°E), 22.xi.2014 (N.U. Elias) . 9♂ 25♀, ZFMK (Ar 16011), and 1♂ 1♀ 35 juvs, MSU-IIT, Mount Mupo (8.018°N, 124.301°E), 20.xi.2014 (N.U. Elias) . 7♂ 11♀ 15 juvs, ZFMK (Ar 16012), Mount Mupo (8.022°N, 124.299°E), 19.xi.2014 (N.U. Elias) . 1♂ 6♀ 11 juvs, ZFMK (Ar 16013), Mount Mupo (8.022°N, 124.299°E), 16.xi.2014 (N.U. Elias) . 5♂ 7♀ 22 juvs, ZFMK (Ar 16014), Mount Mupo (8.018°N, 124.297°E), 21.xi.2014 (N.U. Elias) . 6♂ 15♀ 29 juvs, ZFMK (Ar 16015), Mount Mupo (8.021°N, 124.300°E), 17.xi.2014 (N.U. Elias).

Notes. Previously, this species was known from its type locality only (Langub, near Davao). The new material is partly from very close to the type locality (Malagos; ~ 20 km NW of Langub), partly from localities further north and west (up to ~ 170 km from Langub). There is slight variation in the shape of the appendix, both within and among localities, but a significant separation seems to exist between eastern localities (Langub, Malagos, Santo Domingo ; Figs 81–84 ) and western localities (Mount Mupo, Camp Abubakar; Figs 85–88 ). Since no or only minimal further morphological differences were seen in the male palp and in the internal female genitalia, the western populations are here tentatively assigned to this species pending further collecting and study. Tibia 1 in new material: 31 males: 8.2–11.2 (mean 9.2); 50 females: 6.2–7.5 (mean 6.9).

Natural history. At Malangob, this species shared plants (and sometimes individual leaves) with Pholcus domingo Huber. Two egg-sacs contained 9 eggs each, perfectly lined up in a single row ( Fig. 10 ).

Distribution. Widely distributed in Mindanao ( Fig. 281 ), but possibly absent from eastern Mindanao (not found at Maragusan , Mount Mayo, and Mount Hamiguitan) and from southern Mindanao (not found on Mount Matutum).

Figures

FIGURE 281. Known distribution of the Calapnita phyllicola group, part 1 (cf. Fig. 282). The western Java record is based on a single female of uncertain identity. For details on the undescribed species in RMNH see C. phasmoides.

FIGURES 3 – 12. Live specimens, Calapnita phyllicola group. 3 – 6. C. lehi sp. nov., ♂ and ♀ with egg-sac from Lambir (3 – 4); ♂ and penultimate instar ♂ from Gunung Mulu (5 – 6). 7 – 8. C. kubah sp. nov., ♂ and ♀ with egg-sac from Kubah. 9. C. deelemanae Huber, ♀ with egg-sac from Poring. 10. C. subphyllicola Deeleman-Reinhold, ♀ with egg-sac from Malagos. 11 – 12. C. anai sp. nov., ♂ from MacRitchie, ♀ with egg-sac from Lembah Anai.

FIGURES 81 – 88. Calapnita subphyllicola Deeleman-Reinhold, left bulbal appendices, prolateral views. 81 – 84. Males from central Mindanao (81: Malagos, ZFMK Ar 16003; 82: Penolohan, ZFMK Ar 16007; 83 – 84: Santo Domingo, ZFMK Ar 16004 – 05). 85 – 88. Males from eastern Mindanao (85 – 86: Camp Abubakar, ZFMK Ar 16009; 87 – 88: Mount Mupo, ZFMK Ar 16010 – 11). Scale line: 0.2 mm (all at same scale).

FIGURES 89 – 97. Calapnita subphyllicola Deeleman-Reinhold, SEM micrographs (ZFMK, Ar 16004 – 05). 89. Male cheliceral apophyses. 90 – 91. Right procursus tip, retrolatero-dorsal and retrolateral views. 92. Left procursus tip, prolaterodorsal view. 93. Left genital bulb, prolateral view (arrow points at membranous process). 94 – 95. Male and female ALS (arrows point at PMS spigots). 96. Male gonopore. 97. Epigynum, ventral view. a, appendix; b, genital bulb; e, embolus; p, procursus. Scale lines: 10 µm (94 – 96), 50 µm (89 – 92), 100 µm (93, 97).