Roseville-based accounting firm Gallina LLP announced Wednesday it has acquired the Mercer Island, Wash., accounting firm Tueffers, Guckian & Gamon PLLC. The 10-person staff, three of whom are partners, are now part of Gallina, and the name changed effective Wednesday to Gallina. Tueffers, Guckian & Gamon is a 30-year-old firm that served clients in Alaska, Hawaii and Washington. The firm had been purely a construction-industry accounting practice, which fits in with Gallina, which historically…