Is an ortholog of human CTDSP1 (CTD small phosphatase 1) and CTDSPL (CTD small phosphatase like). Exhibits several functions, including LIM domain binding activity\; kinase binding activity\; and phosphatase activity. Is involved in dephosphorylation and regulation of oviposition. Localizes to the I band and M band. Is expressed in the body wall musculature\; the pharyngeal muscle cell\; and the vulval muscle.