Nothrus 73 



14. N. rugulosus .Banks 1895 K r.. Banks in: Tr. Amer. ent. Soc., c. 22 p. 15. 



Im. Cephth. dark, Abd. pale brown. Like N. excisus but Abd. trun- 

 cated, slightly concave or convex posteriorly not deeply emarginate; 

 4 large clavate hairs on each lat. margin, margins roughened, but Dors, of 

 Abd. smooth. Rost. hairs very clavate. Ung. trid. L. 700 ju. 



Under bark of dead trees. New York State and Illinois. 



15. N. segnis (Herm.) 1804 Notaspis s., Hermann. Mem. apt., p. 94 t. 4 f. 8 | 

 1844 Nothrus s., C. L. Koch, C. M. A., fasc. 30 t. 1 1885 N. s., Berlese, A. M. S., fasc. 17 

 nr.2 j 1888 N. s., Michael, Brit. Orib., v.2 p. 517 t.48 f. 1- -6 | 1844 Oribatas., Gervais 

 in: Walckenaer, Ins. Apt., v.3 p. 254 V1840 Nothrus biurus, C.L.Koch, C. M. A., 

 fasc. 30 t. 2 (Nph.!) j 1840 N. furcatus, C.L.Koch, C. M. A., fasc. 30 t. 3 (Nph.). 



Im. Yellow-brown, dull, covered with raised dots, but usually partly 

 concealed by dirt. Cephth. flat, 2 apophyses extend beyond Rost. carrying 

 at their ant. ends thick, villous, curved hairs which cross. Psstg. org. with 

 short thin peduncle and pyriform head. Intlam. hair long villous. Legs 

 not reaching post, margin; broad, flat, bordered with curved spines. Ung. 

 trid. Abd. very long oblong, post, corners project and turn outward; ad- 

 joining inner side of projection is an apophysis bearing a thick, curved, 

 villous hair; but corners apophysis and hair are hidden in a conical 

 bag which is part of the nymphal skin; the 2 bags are joined by a 

 strip of nymphal skin which hides the post, margin and bears a thick curved 

 hair. An irregularly oval ridge on Dors, of Abd. - - Nph. Like Im., but 

 yellowish white, Rost. and legs reddish. Abd. bifurcate posteriorly, forming 

 2 long conical tails with a hair at post, end of each. Psstg. org. rod-like. 

 - Im. L. ca. 0,8 1,2 mm. 



At the roots of mosses. England, Germany, Italy, Norway, Sweden. 



16. N. spinifer C. L. Koch 1835 N. s., C. L. Koch, C. M. A., fasc, 2 1. 18 j 1885 

 JV. s., Berlese, A. M. S.. fasc. 17 nr. 3 | 1885 N. s., Canestrini, Prosp. Acarof., v. 1 p. 32 | 

 1855 N. spiniger, Nicolet in: Arch. Mus. Paris, v. 1 p. 455 t. 7 f . 2 j 1888 N. s., Michael, 

 Brit. Orib.. c. 2 p. 497 t, 48 f. 7 13 j 1882 N.concavus, Haupt in: Ber. Ges. Bamberg, 

 r. 12 p. 25. 



Im. Chitinous brown, rough, leathery, granular, covered with villous 

 processes, but usually so hidden by dirt that neither color nor texture are 

 seen. Rost. hairs short, Intlam. hair long, both curved, villous, springing from 

 short apophyses; 2 very long similar hairs on long apophyses 

 between Rost. hairs and Intlam. hair, these cross in front of Rost. 

 Psstg. org. with very short peduncle and pyriform head. Legs thick, flat, 

 rough, with numerous thick curved hairs. Ung. trid. Abd. oblong, Dors, 

 thereof hollow, lat. margins and ant. margin raised. Ant. margin of Abd. 

 bears 3 pairs of villous curved spines on apophyses. Each lat. margin 

 has 5 similar spiniferous processes larger and more curved; a very 

 large apophysis and straight spine at post, angle, and 2 pairs with curved 

 spines on post, margin; all curved spines cross forming a basket. - 

 Nph. Like Im., but lighter and apophyses not so long or chitinized. - 

 Im. L. ca. 900 JLI. 



Algeria, England, France, Germany, Italy. 



17. N. sylvestris NIC. 1855 N. s., Nicolet in: Arch. Mus. Paris, v. 7 p. 458 t, 7 

 f. 4 1888 .V. s., Michael, Brit. Orib., r. 2 p. 490 t. 46 f. 1 7 || non 1896 Angelia s., 

 Berlese, A. M. S., Crypt. II p. 26. 



