Proboscides of S-T bees. a, b, Inner surface of maxilla and anterior surface of labium (with enlargements of apical hairs of glossa and paraglossa) of Macropis europaea Warncke; c, d, Labium (with truncate paraglossa at left and labial palpus at right of glossa) and maxilla (base of cardo omitted) of Neffapis longilingua Ruz. Neffapis is a long-tongued S-T bee. From Michener, 1981a, and Rozen and Ruz, 1995 (source: Michener, 2007)