Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
advŏlĭtans, antis, Part. [ad-volito], flying often to, fluttering about: papilio luminibus advolitans, * Plin. 11, 19, 21, § 65: advolitans noctua, * Prud. adv. Symm. 2.