Synonyms

• Platynaspis bisignata Mulsant, 1850: 946

Primary references

• Klug, [J.C.F.] 1833. Bericht über eine auf Madagascar veranstaltete Sammlung von Insecten aus der Ordnung Coleoptera. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin aus dem Jahre 1832 : 91–223. [1834; published as a separate in 1833; date 13-XI-1833 on p. 220]. BHL Reference page. 

Additional references

• Crotch, G.R. 1874. A revision of the coleopterous family Coccinellidae. E. W. Janson, London. xv. + 311 pp.Internet Archive BHL. Reference page. 
• Gerstaecker, A. 1871. Beitrag zur Insektenfauna von Zanzibar. Archiv für Naturgeschichte 37(1): 345–363. BHL. Reference page. 
• Mulsant, E. 1850. Species des Coléoptères trimères sécuripalpes. Annales des Sciences Physiques et Naturelles, d’Agriculture et d’Industrie, Lyon (2) 2: 1–1104. BHL Reference page. 
• Weise, J. 1892. Synonymische Bemerkungen. Deutsche Entomologische Zeitschrift 1892: 413–414. BHL. Reference page. 

Note:

It is not obvious why Crotch recombined Coccinella mesomela as Platynaspis mesomelas, since he treats Platynaspis as feminine. However this form seems to be univerally used, so qualifies under ICZN 33.3.1: "when an incorrect subsequent spelling is in prevailing usage and is attributed to the publication of the original spelling, the subsequent spelling and attribution are to be preserved and the spelling is deemed to be a correct original spelling."