New species in old mountains: integrative taxonomy reveals ten new species and extensive short-range endemism in Nesticus spiders (Araneae, Nesticidae) from the southern Appalachian Mountains

southwestern Nesticus reclusus ♂ palps. North Carolina, Graham Co., Appalachian Trail, S of Stecoah Gap, MCH 02_165, ventral (A), dorsal (B) North Carolina, Graham Co., ENE of Fontana Village, MCH 07_120, ventral (C), dorsal (D). Georgia, Gilmer Co., Rock Creek Road, N of Rich Mountain Wilderness, MCH 07_102, ventral (E), dorsal (F). North Carolina, Cherokee Co., Beaver Creek Road, MCH 04_057, ventral (G). North Carolina, Cherokee Co., S of Tatham Gap, MCH 04_058, dorsal (H). North Carolina, Clay Co., Tusquitee Mountains, Long Branch of Fires Creek, MCH 02_144, ventral (I), dorsal (J). North Carolina, Swain Co., Nantahala River Gorge, Nantahala River Gorge, across from Talc Mountain quarry, dorsal (K). North Carolina, Macon Co., S Wayah Bald, MCH 02_169, dorsal (L). Scale bar: 0.5 mm.