Described as
Chironomus festivellus Kieffer, 1906a: p. 18 nom. nov. for Chironomus festivus Meigen, 1830 nec Say, 1823
Synonymy
Chironomus festivus Meigen, 1830a: p. 252 nec Say, 1823
Trichocladius laccophilus Kieffer in Thienemann and Kieffer, 1916a: p. 533
Cricotopus angustus Goetghebuer, 1927 (Verrall m.s.)
Trichocladius flavus Kieffer, 1909a: p. 46 (a questionable synonymy)
Trichocladius phragmitis Kieffer, 1923a: p. 153 (a questionable synonymy)
Trichocladius crassinervis Kieffer, 1925d: p. 387 (a questionable synonymy)
Cricotopus vernus Goetghebuer, 1929b: p. 167 (a questionable synonymy)
Codes
1892609070 [IAWM-code]
CRICFEST [Dutch-lettercode]