Ideobisium threveneti Simon
Description: Length of animal, including mandibles, 4 mm.; length of palps, 3.5 mm.; length of abdomen, 3 mm.; length of claw, 1.5 mm. Color—Cephalothorax and palps, dark reddish brown; abdomen, lighter than cephalothorax; legs, pale yellow.
Cephalothorax: As long as it is broad, upper margin truncate, sides nearly straight, lower margin straight; no suture; four distinct eye spots; eyes on each side almost touch each other.
Abdomen: Elongate, three times as long as it is broad; scuta entire.
Palps: Coxa smooth; trochanter small; femur long, outer edge almost straight, inner edge slightly convex; tibia short and stout, pedicellate, convex on inner and outer surface.
Claw: Not large; finger as long as hand and not curved very much; hand, broad, evenly convex on inner and outer edges.
Legs: Lack trochantins, III and IV stouter than I and II; mandibles large; serrula not attached throughout length of moveable finger; spinnerets long and transparent.
Habitat: Claremont, Ice House Canyon, under leaves.
Ideoroncus obscurus Banks