Calapnita deelemanae Huber, 2011

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 : 23-25

Calapnita deelemanae Huber, 2011

Fig. 9

Calapnita deelemanae Huber 2011: 59 , figs 72–73, 198–201 (♂♀).

Diagnosis. Males can be easily distinguished from C. subphyllicola by bulbal appendix (pointed distally with small subdistal process, very similar to C. phasmoides and C. anai ; cf. Figs 101 , 110 ); from C. anai and C. phasmoides by distally strongly bent procursus (figs 198–199 in Huber 2011; very similar to C. subphyllicola ). Females of these four species appear indistinguishable externally, but the round internal membranous ‘sac’ of C. deelemanae (fig. 201 in Huber 2011) might be distinctive.

New material examined. MALAYSIA-BORNEO: 2♂ 3♀, ZFMK (Ar 16001), Sabah, Mount Kinabalu , Poring Hot Springs , forest near beginning of Kipungit Trail (6.048°N, 116.706°E), 450 m a.s.l., on undersides of leaves, 7.viii.2014 (B.A. Huber, S.B. Huber) ; 1♂ 7♀ 2 juvs in absolute ethanol, ZFMK (Bor 207), same data . 1♂, RMNH ( ARA 17804), Poring , fruit plantation, canopy fogging, 23.i.2001 (collector not given) . 1♀, RMNH ( ARA 17805), Poring Hot Springs (6.033°N, 116.833°E), canopy fogging Aglaia sp., primary forest, 500–700 m a.s.l., 28.iii.1998 (A. Floren) . 1♂ 1♀ (2 vials), RMNH ( ARA 17806–07 ), Kinabalu National Park, Monggis (6.220°N, 116.735°E; not as on labels: 6.083°N, 116.65°E), 23.ix.2006 (A. Floren) . 3♀ (2 vials), RMNH ( ARA 17808–09 ), Kinabalu National Park (coordinates on label probably wrong: 6.083°N, 116.65°E), 16/ 17.ix.2006 (A. Floren) . 5♂ 4♀ 2 juvs, ZFMK (Ar 16002), Sabah, Sepilok, Rainforest Discovery Centre, forest along Pitta Trail (5.875– 5.878°N, 117.937– 117.942°E), 30 m a.s.l., on undersides of leaves, 9.viii.2014 (B.A. Huber, S.B. Huber) ; 1♂ 1♀ 3 juvs in absolute ethanol, ZFMK (Bor 175), same data.

Notes. As mentioned in the original description, there is slight variation among males from different localities. This is confirmed by the new material: the appendix of males from Sepilok resembles that of males from the type locality (Danum Valley), while males from Mount Kinabalu appear identical to the single male specimen previously known from this locality (i.e., with slightly longer subdistal side branch on appendix). Tibia 1 in new material: 6 males: 6.7–7.9 (mean 7.4); 11 females: 5.6–6.9 (mean 6.3).

Natural history. At Poring, most specimens were found on large leaves along the trail near the park entrance; the species seemed to be much less abundant in the forest. At Sepilok, specimens were found on leaves of various monocot and dicot plants. Egg-sacs contained 9– 12 eggs each, consistently lined up in a single row ( Fig. 9 ).

Distribution. Widely distributed in Sabah, northeastern Borneo ( Fig. 281 ).

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 98 – 106. Calapnita phasmoides Deeleman-Reinhold (98 – 102; ♂ from Tumbang Tahai, RMNH, ARA 17451, ♀ from Sepaku, RMNH, ARA 17379) and C. sp. from Ulu Senegang (103 – 106; RMNH, ARA 17810, 17812). 98 – 100, 103 – 105. Left procursi, prolateral, dorsal, and retrolateral views. 101, 106. Left bulbal appendices (a), prolateral views (e, embolus; arrow points at membranous process). 102. Cleared female genitalia, dorsal view (arrow points at membranous sac). Scale lines: 0.5 mm (98 – 101, 103 – 106; all male structures at same scale), 0.3 mm (102).

FIGURES 107 – 111. Calapnita anai sp. nov. (ZFMK, Ar 16016). 107 – 109. Left procursus, prolateral, dorsal, and retrolateral views. 110. Left bulbal appendix, prolateral view. 111. Cleared female genitalia, dorsal view. Scale lines: 0.5 mm (all male structures at same scale).