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These wasps make gymnodomous nests (open, not covered by an envelope) with one or more petioles, which they coat with ant-repellant chemicals. The nests are usually found in closed spaces with small openings, inside bushes and within various man-made structures like electric poles, broken pillars, crevices of buildings, electric cable boxes, switch boards, tube light holders, the bottom of park benches, and even from within dustbins and letter boxes. Nests that can be accessed only through very small openings are well protected from the hornets Vespa tropica, which are the prime predators of these wasps. Nest sizes range from 0 to 722 cells (mean ± s.d.: 133.7 ± 119.2), with 1 to 200 females (mean ± s.d.: 21.9 ± 22.3) and 0 to 33 males (mean ± s.d.: 2.4 ± 5.4).
Spotted on Jun 23, 2012
Submitted on Jun 28, 2012