UPN senior vice president of drama development Maira Suro has ankled after three years at the weblet.

Suro’s departure is the first vacancy at the grappler net since News Corp. announced plans earlier this month to purchase Chris-Craft’s band of UPN affiliates, throwing the network’s future into question.

Network execs say it’s business as usual at UPN, but speculation about UPN’s future may make it difficult for the web to quickly fill its open positions. The network hasn’t yet named a replacement for Suro, who first joined UPN in 1997 as vice president of drama development.

Suro oversaw development of UPN dramas such as “7 Days,” “The Beat” and this season’s newcomers “Freedom” and “Level Nine.” Prior to UPN she served as vice president of series development at Spelling Entertainment, where she helped develop series such as “7th Heaven” and “Charmed.”

Suro’s resume also includes a stint as director of drama development at CBS Entertainment. Sources say Suro’s contract was up at UPN and said the parting was amicable.

Although UPN is expected to perform on par with or better than last year’s “Smackdown”-fueled season, industry sources wonder whether to expect other defections at the weblet in light of the uncertainties.