Taenionema atlanticum Ricker & Ross

(Figs. 8, 17, 25, 46, 57, 68, 78, 87, 100)

Distribution. East of the 90 th Meridian (Atlantic Canada southward to Tennessee and the Carolinas).

Material examined. New Hampshire: Strafford Co., Mad River, 2 km southwest of Farmington, 20-IV- 2008, D.S. Chandler, ♂ and ♀ larvae . West Virginia: Mingo Co., Laurel Creek Public Hunting Area, Laurel Fork of Pigeon Creek, 3.2 km south of Dingess, CR 317, 2-III-1976, R. F. Kirchner, 4♂, 4♀, ♂ and ♀ exuviae .

Characters. Color, pigmentation (Fig. 8), maxillae (Fig. 25), body, leg (Fig. 46) and cercal setation, and sexual dimorphism (Figs. 57, 68, 78) generally typical of genus. Body length ♂ 7 mm, ♀ 8 mm. Antennal segments approximately 64. Cercal segments ♂ 44-48, ♀ 50-54. Male 9 th sternum (Fig. 87) ovate behind greatest width, with posterolateral sides convex and apex narrowly rounded; anterior portion ovate with sinuate sides. Female 9 th sternum (Fig. 100) narrower than ♂ posteriorly, with less convex sides and anterior portion broadly triangulate with straight sides.