Porto Alegre, 24 May 1991 Does anybody know the recent addresses (mail, bitnet) of either LUBY, Julia M.; REGNIER, Fred E.; CLARKE, Eric T. or WEAVER, Elizabeth C and Nevin ? They worked on stingless bees in the seventies. Is anyody familiar with Trigona pectoralis which lives (at least) in Mexico ? Thank you. Rainer Radtke PUC, Lab. Pesq. Biologicas Av. Ipiranga, 6681 90.620 Porto Alegre, RS Bitnet: [log in to unmask] Brasil