Table 1 . Number of live one- and two-year male and female offspring of Osmia montana reared from two sites in two years. Offspring 
are grouped by nest type, i.e., 1-yr nests contained only 1-yr offspring etc. SR = sex ratio. Number of dead cells shown in parenthesis next 
to total live cells. 
No. No. 1-yr. No. 2-yr. No. 
Site, year and nest type nests $ 9 SR $ 9 SR cells 
1982] 
Torchio & Tepedino — Osmia Bees 
225 
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mixed 38 86 30 2.9 64 74 0.9 254 
totals 62 116 65 1.8 119 121 1.0 421(163) 
totals both forms #235, 9 9186, SR 1.26 
