Sen-amis. Zetorahestinae, Zetorchestes 



27 



Characters (at present) those of the subfamily. Qng. of 

 known species trid. 

 2 species. 



Key to the species. 



Abd. elliptical 1. S. fusifer ... p. 27 



Abd. globulai- 2. S. microcephalus p. 27 



1. S. fusifer (0. L. Koch) 1841 Oribates f, 0. L. Koch, CM. A., 

 fasc. 31 t. 3 | 1885 Neozetes f, Berlese, A.M. S., fasc. 20 nr. 6 | 1896 Ser- 

 rarius /*., Berlese, A. M.S., Crypt. II p. 56 || non 1855 Leiosoma microcephala, 

 Nicolet in: Arch. Mus. Paris, a 7 p. 443 non 1883 Serrari/us microcephalus, 

 Michael in: J. R. micr. Soc, ser. 2 v. 3 p. 25 [ non 1841 Oribates globulus, 

 C. L. Koch, C. M. A., fasc. 31 t. 4. 



Im. Yellow-brown, smooth; Lam. narrow blades on edge. 



C. lam. minute, scarcely recognizable. Psstg. org. very long, 



with thin peduncle and fusiform head. Intlam. hair very long. 



Abd. elliptical, slightly truncated anteriorly, 2 short hairs on 



post, margin. Dors, of Abd. hairless. L. ca. 470 la- 

 in moss. Algeria, Germany, Italy. 



2. S. microcephalus (Nic.) 1855 Leiosoma m., Nicolet in: Arch. Mus. Paris, 

 p. 7 p. 443 t. 6 f . 4 | 1883 Serrarius m., Michael in: J. R. micr. Soc, ser. 2 v. 3 p. 25 | 

 1884 S. m., Michael, Brit. Orib., v. 1 p. 272 t, 14 f. 7 —13 | 1885 Neozetes bicornis, 

 Berlese, A. M. S., fasc. 20 nr. 7 | 1896 Serrarius b., Berlese, A. M. S., Crypt. II p. 56 || non 

 1841 Oribates fusifer, C. L. Koch. C. M. A., fasc. 31. 



Im. Eed- brown, legs lighter; polished; almost globular. Eost. 

 slightly trilobed, 2 longitudinal ridges on its dors, surface; Cephth. short; 

 Lam. blades nearly on edge, widest anteriorly; C. lam rather long, slightly 

 truncated; Lam. hair terminal. Trlam. a thickened bar. Psstg. org. very 

 long with slender peduncles and small, fusiform head terminating 

 in a curved point; Tectp. 1 blade-like, large, 2 almost obsolete. Dors, of 

 Abd. without hairs or markings. 3 pairs of short hairs round post, margin. 

 Genital covers broader than anal, placed far forward. L. ca. 450 u. 



England, France, Germany. 



C. Subfam. Zetorchestinae 



Without Ptm. Cephth. anchylosed to Abd. Ventr. plate anchylosed 

 to dors. Mdb. chelate. Legs arranged first 3 pairs near together, pair 

 4 distant, much larger than the others. Coxae and Femora greatly enlarged ; 

 formed for jumping. 



1 genus with 1 species. 



1. Gen. Zetorchestes Berl. 



1885 Carabodes (part.), Canestrini. Prosp. Acarof., v. 1 p. 44 \ 1885 Leptorchistis 

 (corr. Leptorchestes, non Leptorehestes Thorell 1869!), Canestrini & Berlese in: Atti Soc 

 Veneto-Trent,, v. 9 p. 207 | 1888 Zetorchestes, Berlese, A. M.S.. fasc. 63 nr. 2. 



Rost. hairs dorsal, mounted ou chitinous apophyses. Lam. present. 

 Second joint of palpus much the longest. Genital and anal covers close 

 together at extreme rear of Abd. Ung. mond. 



1 species. 



