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Table 1 Colony contents data. Brood numbers and sex ratio parameters for 52 nests of H. nigrinervis collected from Grahamstown, South Africa in late summer (February).

From: Social complexity in bees is not sufficient to explain lack of reversions to solitary living over long time scales

Adult females/nest Per capita eggs+larvae Mean total brood (eggs, larvae prepupae and pupae) Mean sex ratio of pupae (total male pupae: total female pupae) Number of nests
1 0.292 0.75 0 (0:2, 2 nests) 24
2 0.60 2.13 0.22 (2:7, 9 nests) 15
3 0.503 2.50 0 (0:5, 5 nests) 8
4 0.313 3.50 0.33 (2:4, 3 nests) 4
5 0.60 3.00 -(0 nests) 1