Totsy.com, a flash-sale retailer of products for children and moms, has acquired competing mom-focused limited-time-offer site Mamasource.com, an asset of Mamasource Inc., Totsy announced yesterday.

The assets gained in the deal include the Mamasource brand and the site’s 2 million members, vendor relationships, daily-deal offerings and associated staff, Totsy says. That brings Totsy’s total membership to 5 million consumers, it says.

“This acquisition is part of our larger corporate strategy to develop Totsy into a full destination site for parents with young families,” says Guillaume Gauthereau, Totsy co-founder and CEO. “We saw a valuable opportunity to significantly increase the member base of Totsy and complement our existing offerings by expanding into local, service-based daily deals, in which Mamasource specializes.” Besides offering products geared to women with children, Mamasource.com offers deals on services such as college planning advice and job boards.

Totsy previously cross-promoted with Mamasource’s online moms’ community Mamapedia.com, it says. Mamapedia.com will continue to operate independently, with Totsy partnering as before, the retailer says.

“Mamasource has a long history of connecting our moms with high quality, high value merchants and products,” says Marc West, CEO of Mamasource. “The combination of Totsy and Mamasource creates an amazing opportunity for moms and families to enjoy greater access to even more exclusive deals and products.”

Terms of the acquisition were not disclosed.

Totsy is No. 531 in the Internet Retailer Second 500 Guide.