3. a) Body large (> 20 mm), mesosoma with yellowish-brown pubescence (Figure 5a); clypeus very narrow medially, less than 1/4 as wide as long, leaving a large space visible even when mandibles are closed (Figure 6a) ..... M. (Callomegachile) sculpturalis Smith b) Body smaller (< 14 mm), pubescence white (Figure 5b); clypeus much wider medially, unmodified (Figure 6b) ..... 4 |
|