Four new troglophilous species of the genus Belisana Thorell, 1898 (Araneae, Pholcidae) from Guizhou Province, China Author Chen, Hui-Ming Author Zhu, Ming-Sheng text Zootaxa 2009 2092 58 68 journal article 10.5281/zenodo.187505 117b46d8-6e77-4c15-918e-c32282748f14 1175-5326 187505 Belisana yanhe sp. nov. Figs. 31–38 Holotype . Male from Zhujia Cave (28° 39΄N, 108° 18΄E, alt. 440 m ), Siqu town, Yanhe County, Guizhou Province, 29 September 2007 , collected by H.M. Chen (HBU). Paratypes . Five males and eighteen female, data are same as holotype (HBU). Diagnosis. Relatively large, long-legged species with dosally elongated opisthosoma ( Fig. 32 ); distinguished from relatives by the shapes of procursus ( Figs. 34–35 ), bulbal projections ( Fig. 35 ) on the male, and the female genitalia (external aspect and internal structures, Figs. 37, 38 ). The new species is similar to B. xishui sp. nov. , but distinguished by the spatulate embolus ( Fig. 35 ), the procursus without spine ( Figs. 34–35 ), palpal trochanter ( Fig. 36 ) and the broad membranous flap on procursus ( Fig. 34 ). FIGURES 31–38. B. yanhe sp. nov. , male holotype and female paratype: 31, male habitus, dorsal view; 32, male habitus, lateral view; 33, male prosoma frontal view; 34, male left palp, prolateral view; 35, male left palp, retrolateral view; 36, male left palp trochanter and apophysis, retrolateral view; 37, female genitalia, ventral view; 38, female genitalia, dorsal view. Scale bar: 31–32, 0.3 mm; 33–38, 0.1 mm. Description. Male ( holotype ): Total length 1.6 (1.65 with clypeus), carapace width 0.58. Leg I: 13.80 (3.42 + 0.23 + 3.42 + 5.36 + 1.38), tibia II: 2.14, tibia III: 1.28, tibia IV: 1.84; tibia I L/d: 44. Habitus as in Figs. 31 and 32 . Carapace yellowish, with dark lateral marks down the carapace, thoracic furrow absent ( Fig. 32 ), sternum yellowish, legs ochre-yellow, with darker rings on coxa, opisthosoma yellowish, with darker spots ( Figs. 31, 32 ), with sparse hairs. Ocular area not elevated, six eyes in two triads, distance PME-PME 0.116; diameter PME 0.065; distance PME-ALE 0.026. Clypeus unmodified. Sternum 0.41 long, 0.44 wide. Chelicerae as in Fig. 33 , with pair of curved apophyses, tips unmodified, 0.43 apart. Palps as in Figs. 34 and 35 ; trochanter with retrolateral apophysis, femur with proximo-dorsal apophysis, procursus without spine ( Figs. 34–35 ) and with ventral membranous flap (broad), bulb with hooked apophysis ( Fig. 34 ). Retrolateral trichobothrium of tibia I at 6.4%; legs without spines and curved hairs; tarsus I with ~24 pseudosegments. Female ( Paratype ): In general similar to male. Epigynum simple externally ( Fig. 37 ), pockets 0.41 mm apart. Dorsal view as in Fig. 38 . FIGURES 39. B. yanhe sp. nov. , habitat, Zhujia Cave under the shaft. Distribution: The species is known only from the type locality in Guizhou Province, China ( Fig. 12 ). Etymology. The specific name refers to the type locality. Gender feminine. Natural history. Troglophilous, collected from the light zone inside of a cave with a huge shaft ( Fig. 39 ). Cave is large with a great underground river. Spiders were found underside of leaves of plants (mostly pteridophytes) that grow within the shaft ( Fig. 39 ). One female carrying an eggsac with six eggs was collected. Eggsac globular, about 0.9 mm in diameter, eggs spherical, yellowish, about 0.49 in diameter.