Toumeyella Cockerell, 1895

Kondo, Takumasa & González, Héctor, 2018, Description of a new species of Toumeyella Cockerell (Hemiptera: Coccomorpha: Coccidae) on Crataegus mexicana Moc. and Sessé ex DC. (Rosaceae), Insecta Mundi 2018 (634), pp. 1-9 : 2

Genus Toumeyella Cockerell

Type species. Lecanium (Toumeyella) mirabile Cockerell 1895: 2 .

Generic diagnosis. The genus Toumeyella can be diagnosed within the family by the following combination of features: i) body of adult female convex to globular, often heavily sclerotized at maturity; ii) dorsal setae generally sharply spinose, rarely bluntly spinose or lanceolate; iii) eyes absent; iv) sclerotic pores, tubercles, pocket-like sclerotizations and tubular ducts absent on dorsum; v) preopercular pores well developed; vi) dorsal microducts variable in structure (either unilocular or bilocular depending on the species), all of similar size, evenly scattered on dorsum; vii) anal plate setae 3–25 in number, usually less than 10 on each plate; viii) anal plates located at about 1/5 to 1/4 of body length from posterior margin; ix) sclerotized crescent around anal plates present or absent; x) stigmatic clefts shallow or absent; xi) stigmatic setae usually in 3 pairs (rarely 2 or 4, or absent in some species); xii) perivulvar and spiracular pores with 4–7 loculi, species with 5 loculi common; xiii) anterior and posterior spiracular pore bands extending in a continuous row from area around spiracles to margin; xiv) ventral tubular ducts of one type, restricted to perivulvar region and posterior abdominal segments, but not extending anteriorly in a mediolateral line, nor present elsewhere; and xv) antennae and legs greatly reduced.