September, 1999 
SCAMIT Newsletter 
Vol. 18, No. 5 
Sigambra Species Issues (S. bassi vs. S. tentaculata) 
Feature 
Hilbig 1994 
Licher&Westheide 1997 
relative length of 
antennae 
relied upon 
"rather irrelevant" 
number of 
prostomial papillae 
8 vs. 14 
14 for both 
posterior margin of 
prostomium 
not relied upon 
"of little value" 
both initial setiger. S. tentaculata has 
first setiger with 
notohook 
relied upon 
consistent initial occurrence in Setiger # 
4. S. bassi often 11-15, but also as 
early as 3. Variability limits its taxonomic 
value. 
recognizes wide range may be shown via 
recognizes wide range may be 
molecular exam to be other species. 
depth/range 
shown requests critical re-exam of 
Exams to date have not provided 
specimens from great depth 
information necessary to distinguish 
new/dilferent taxa. 
notopodial 
spine+capillary+ 
hook 
not commented on 
unique for S. bassi 
nomenclature 
B & H 74 S’, tentaculata listed as 
B&H 68&74 S. tentaculata listed as S. 
dispute 
same 
bassi 
Table 2. - Sigambra spp. 
comparison 
12 
