-26- 



Ochrotrichia Mosely 1934 



1. 10th tergite with hooked 

 or straight sclerotized 

 processes. 



- 10th tergite without 

 hooked or straight sclero- 

 tized processes. 



2. 10th tergite short trian- 

 gular, apex acuminate; 

 claspers long, narrow (2.3 

 X as long as 10th ter- 

 gite) ; 2 brushes of black 

 pegs at apex. 



- 10th tergite rounded at 

 apex; claspers no more 

 than 1.6x longer than 10th 

 tergite 



3. Dorsal view: 10th tergite 

 divided into 2 processes. 



- Dorsal view: 10th tergite 

 divided into more than 2 

 processes . 



4. 10th tergite with 2 long 

 convoluted processes of 

 equal length extending 

 posteriorly. 



- 10th tergite processes un- 

 equal; left process nar- 

 rows apically with tip 

 strongly twisted. (Puerto 

 Rican species) 



5. 10th tergite; sclerite F 

 coiled near apex, forming 

 a spring-like structure. 



- 10th tergite; without a 

 coiled spring-like struc- 

 ture at apex. 



-3 



-2 



fig. 108 



fig. 109 



xena Ross 1938 



unio Ross 1938 



-4 



-5 



fig. 110 



provosti Blickle 1961 



fig. Ill 



purneyi Flint 1964 



-6 



-9 



