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''Albicoccus'' is an extinct genus of scale insect in the extinct monotypic family Albicoccidae, containing a single species, ''Albicoccus dimai''. The genus is solely known from the Albian - Cenomanian Burmese amber deposits. ==History and classification== ''Albicoccus'' is known from the holotype specimen, collection number BMNH In. 20155(2), which along a limoniid and a psychodid fly, are inclusions in a transparent chunk of Burmese amber. As of 2004, the type insect was part of the amber collections housed at the British Museum of Natural History, London, England.〔 The amber specimen was recovered from deposits exposed in the Hukawng Valley of Kachin State, Myanmar. Burmese amber has been radiometrically dated using U-Pb isotopes, yielding an age of approximately 99 million years old, close to the Aptian – Cenomanian boundary.〔 The holotype was first studied by paleoentomologist and coccid researcher Jan Koteja, of the Agricultural University of Kraków. Kotejas 2004 type description of the family, genus and species was published in the ''Journal of Systematic Palaeontology''. He coined the specific epithet ''dimai'' to honor the Russian paleoentomologist and hempiteran researcher Dmitri (Dima) Shcherbakov, who assisted Koteja with fossil coccid research. The family name is a derivative of the genus name ''Albicoccus'', its self a derivation of Albian, the age of the amber deposits, and "coccus" a common genus name suffix for scale insects.〔 ''Albicoccus'' is one of three Burmese amber coccid genera that Koteja described in the same paper, the other two being ''Burmacoccus'', monotypic to the family Burmacoccidae, and the ''incertae sedis'' genus ''Marmyan''.〔 He placed ''Albicoccus'' into the monotypic family Albicoccidae based on the combination of characters that indicate a relationship to the archaeococcoid group scale insects, but are not found in any one particular family. Koteja noted the reduced eye structuring is similar to other groups with reduced eyes, but the placement of the ommatidia rows are lateral rather than in oblique or perpendicular rows. The abdomen has two pairs of setae near the end, a feature that is similar to the New Jersey amber genus ''Turonicoccus'', but all other features differ.〔 A phylogenetic analysis of coccid males from a number of families was performed by Hodgson and Hardy in 2013. The extinct genera ''Albicoccus'', ''Apticoccus'', ''Grimaldiella'', ''Kukaspis'', ''Marmyan'', ''Palaeosteingelia'', ''Palaeotupo'', ''Solicoccus'', ''Turonicoccus'' and possibly ''Pennygullania'', all with simple rows of eyes, were found to form a clade that included ''Burmacoccus''. The clade also includes the modern families Putoidae, Steingeliidae and Pityococcidae plus the neococcoids clade as a group. A second phylogenetic review of coccids was preformed by Vea and Grimaldi in 2015 and incorporated a number of new fossil taxa. In contrast to the work of Both Koteja and Hodgson and Hardy, the 2015 analysis recovered ''Albicoccus'' as a neoccoid genus along with the fossil genera ''Kuenowicoccus'', ''Pennygullania'', and ''Inka''.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Albicoccus」の詳細全文を読む スポンサード リンク
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