Mesophthirus Gao, Shih, Rasnitsyn & Ren, in Gao et al. 2019: 2.

Type species: Mesophthirus engeli Gao, Shih, Rasnitsyn & Ren.

This insect was originally described in Phthiraptera: Mesophthiridae: incertae sedis. Poinar et al. (2020) transferred it to Hemiptera: Coccomorpha: Xylococcidae (archaeococcoids).