Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. cŭlex, ĭcis, m. (f., Plaut. Cas. 2, 3, 22), a gnat, midge (comprising very many species), Plin. 11, 2, 1, § 2 sq.; 11, 35, 41, § 118; 17, 27, 44, § 255; Plaut. Curc. 4, 2, 14; Lucr. 3, 391; Hor. S. 1, 5, 14; Col. 11, 3, 60; Mart. 3, 93, 9 al.
Also the title of a writing of Verg.; cf. Heyn. Verg. tom. iv. prooem.
As a term of reproach for a wanton lover, Plaut. Cas. 2, 3, 22.
2. culex, ĭcis, v. culix.
culix, ĭcis, m., an unknown plant, Plin. 19, 5, 23, § 68.
Also culex, Pall. Mart. 9, 8.