41. a) Front coxa with short, simple pale hairs that do not obscure the small spine (Figure 56a); BC ..... M. (Chelostomoides) angelarum Cockerell

b) Front coxa with long, mostly plumose pale hairs that partly hide the small spine (Figure 56b); QC‒MB ..... M. (Chelostomoides) campanulae (Robertson)
Figure 56a
Figure 56b

Figure 56a: Front coxal hairs short and simple not hiding the spine
Click to Enlarge →           a

Figure 56b: Front coxal hairs long and plumose partly hiding the spine
Click to Enlarge →           b