W - width of part. L - length of right fore wing. G - length of glossa. M - length of mentum. S-M - length of submentum. G+ M+ S-M - length of proboscis.​
W - width of part.
L - length of right fore wing.
G - length of glossa.
M - length of mentum.
S-M - length of submentum.
G+ M+ S-M - length of proboscis.