Coccoideaceae Henn. ex Sacc. & D. Sacc., Syll. fung. (Abellini) 17: 860 (1905), MycoBank: MB 80616
Parasitic on living leaves. Sexual state: Ascostromata large, up to 2 mm diam, single to solitary, or scattered, mostly superficial, slightly immersed in host tissue, circular to subcircular, discoid, cushion-like, semicircular in section, edge entire, slightly convex at the top, raised from the base, black, thickened at the base, soft, with numerous locules, in a layer in the upper part the ascostromata. Cells of ascostromata comprising heavily, pigmented cells of textura angularis. Locules completely immersed in ascostromata, globose, subglobose or obpyriform, with apical ostiole. Hamathecium of filiform, anastomosing, branched, septate, hyaline, relatively wide pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, cylindrical to subclavate, pedicellate, apically rounded, with a distinct, wide, ocular chamber. Ascospores 2-seriate, apiosporous, ellipsoidal-obovoid, slightly oval, subglobose, yellowish to light brown, tapering towards the narrow, lower end, 1-septate at the lower end, not constricted at the septum, darkened at the septa, smooth-walled. Asexual state: Unknown.
Notes : The family Coccoideaceae was invalidly introduced by Hennings (1904a) and was subsequently validly published in Saccardo and Saccardo (1905). These are mainly parasites on the lower surface of living leaves and have superficial, circular or discoid and darkly pigmented, ascostromata (Saccardo and Saccardo 1905). The family Coccoideaceae now includes three genera and is placed under Dothideales in Kirk et al. (2008). Lumbsch and Huhndorf  (2010) however, list two genera, i.e. Coccoidea and Coccoidella placed in Dothideomycetes incertae sedis .
There is no molecular data to confirm these placements. The family is based on the type species C. quercicola Henn. & Shirai from Japan, which we have not been able to locate. von Höhnel (1909b) added a second genus Coccoidella, having circular and flattened ascostromata and bitunicate, oblong asci (Berkeley 1876). We have examined this which mainly differs in having 2-celled ascospores. Both genera are placed in the same family based on only morphological classification and the genera need to be re-studied.

Type : Coccoidea Henn., Bot. Jb. 28: 275 (1900), MycoBank: MB 1144
Possible synonyms: Apiodothina Petr. & Cif., Annls mycol. 30(3/4): 153 (1932)
Coccodiscus Henn., Hedwigia 43: 144 (1904)