42. a) Front leg unmodified, with basitarsus slender and simple, usually uniformly black (Figure 57a) ..... 43

b) Front leg greatly modified, with basitarsus dilated and excavated along anterior margin, usually conspicuously coloured white to yellowish (Figure 57b) [except M. gemula in which basitarsus mostly black (Figure 57c)] ..... 59
Figure 57a
Figure 57b

Figure 57a: Front leg unmodified
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Figure 57b,c: Front leg greatly modified
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