Cycloptilum trigonipalpum (Rehn & Hebard, 1912)
 
oblique views and relative terminal circumference of distal joint of maxillary palpus

Source: Rehn, J.A.G. & Hebard. 1912. Proc. Acad. Nat. Sci. Philad. 64(2):184-234, Fig. 13-16