120 Annals Entomological Society of America [Vol. X, 



Key to the Genera of Subfamily Oribalince. 

 a. Pteromorphae attached, or apparently attached, to both ccphalothorax and 



abdomen Tribe Taneoptera 



b. Abdomen circular, or almost circular, in outline, and bearmg large setae, 



Neogymnobates n. gen. 



[Type: N. multipilosiis (Ewing)] 



bb. Abdomen very long, subcylindrical; either hairless, or bearing small sets. 



c. Sides of cephalothorax and of abdomen somewhat swollen so that they 



are not parallel; femora II without expansions. .Gymnobates Banks, 1902 



[Type: G. glaber Banks] 

 cc. Sides of cephalothorax and abdomen subparallel; femora II with blade- 

 like expansions Oripoda Banks and Pergande, 1910 (?) 



[Type: 0. elongata Banks and Pergande] 

 aa. Pteromorphae attached to abdomen only. 



b. Pteromorphae not truncate in front; extending beyond the anterior margin 



of abdomen Tribe Macroptera 



c. Pteromorphas continuous with dorsal plate, not hinged to abdomen. 



d. Pteromorphae not extending downward from the place of their insertion, 

 but projecting forward along the sides of cephalothorax, 



Tenuiala Ewing, 1913 



[Type: T. nuda Ewing] 



dd. Pteromorphae extending downward as well as forward from the place 



of their insertion Achipteria Berlese, 1885 



[Type: Oribata nicoletii Berlese] 



cc. Pteromorphae not continuous with dorsal plate, but hinged to it in such a 



manner that they can be folded down over the ventral surface of the 



body .• Oribata« Latreille, 1802 



[Type: Notaspis alatiis Hermann] 

 bb. Pteromorphae usually truncate, not extending beyond the anterior margin 



of the abdomen Tribe Brachyptera 



c. Pteromorphae united by a transverse shelf-like expansion from the anterior 



margin of abdomen Jugatala Ewing, 1913 



[Type: J. tuber osa Ewing] 

 cc. Pteromorphae not united by a shelf-like expansion from the abdomen. 

 d. Cephalothorax completely covered by a roof-like projection from its 



line of junction with the abdomen Tegoribates n. gen. 



[Type: T. siibniger Ewing] 

 dd. Cephalothorax not covered by any roof-like projection from the line 

 of its junction with the abdomen. 

 e. Lamellae attached to cephalothorax along a part, or the whole of their 

 inner borders. 

 f. Either translamella present, or the lamellae joined to each other in 

 front. 

 g. Pteromorphae not rudimentary (cusp-like, or shelf-like). 

 h. Integument rough, being either tuberculate or corrugated. 



Eremaeozetes Berlese, 1913 

 [Type: E. tuberculatus Berlese] 

 hh. Integument not rough, although it may be finely punctate, 

 i. Translamella blade-like, or lamellae joined in front. 



j. Two pairs of lamellae present, also tectopedia for legs II, 



Sphaerozetes Berlese, 1885 



[Type: Oribates orbicularis Koch] 



jj. A single pair of lamellae present, tectopedia for second pair 



of legs absent Podoribates Berlese, 1908 



[Type: Oribates loyigipes Berlese] 



ii. Translamella a mere ridge Protoribates Berlese, 1908 



[Type: Oribates dentatus Berlese]" 



^Oudemans and Banks use Galumna instead of Oribata, or Oribates, for this 

 genus, holding that the Notaspis alatus Hermann is not a true Oribata. The writer 

 prefers to follow Michael and others, believing it to belong to Oribata. 



