Paras. J:?. 



KEY TO THE SPECIES OF TRICHODORUS 

 (From Allen, Ip^^D 



Males and Females 



1. Females with one ovary (monodelphic ) monohys bera n. sp. 



Females with two ovaries (amphidelphic) 2 



2. Spear more than 130 microns long elegans n. sp. 



Spear less than 110 microns long 3 



3. Excretory pore posterior to base of the esophagus, spear less 

 than 30 microns long, males not known nanus n. sp. 



Excretory pore anterior to end of esophagus, spear more than 



30 microns long, males known U 



li. Females with ventro-median or ventro-submedian pores near vulva, 

 males with 2 or 3 supplementary papillae — 5 



Females without ventro-median or ventro-submedian pores near 



vulva, males with one or 3 supplementary papillae 6 



5. Females with ventro-median pores, 2 anterior and 2 posterior to 

 the v\ilva, male with caudal alae, 2 supplementary papillae 



porosus n. sp. 



Females with 2 ventro-submediaxi pores posterior to the vulva, 

 males with caudal alae, 3 supplementary papillae 



atlanticus n. sp. 



6. Females without caudal pores or lateral hypodermal pores, males 

 with a single supplementary papilla, caudal alae present 



christiei n. sp. 



Females with caudal pores and lateral hypodermal pores, males 

 with or without caudal alae, more than one ventral supplement 



7. Females with three lateral hypodermal pores posterior to vulva, 

 males with caudal alae and three ventral supplements 



pachydermus Seinhorst 



Females with one lateral hypodermal pore posterior to vulva, 



males without caudal alae 8 



