^v-,-", ,r, ...6^ (. !* -v^V ' 2 a MOV h The British and some other European Eriococcidae (Homoptera: Coccoidea) D. J. Williams Commonwealth Institute of Entomology, c/o British Museum (Natural History), Cromwell Road, London SW7 5BD Contents Synopsis 347 Introduction 347 Acknowledgements and depositories 348 Morphology 348 Biology and economic importance 350 Eriococcidae Cockerell 351 Key to genera of British Eriococcidae 352 Cryptococcus Douglas 352 Eriococcus Targioni Tozzetti 356 Kuwanina Cockerell 384 Noteococcus Hoy 384 Ovaticoccus Kloet 384 Pseudochermes Nitsche 385 References 389 Index 393 Synopsis Eleven of the 12 indigenous British Eriococcidae, Cryptococcus fagisuga Lindinger, Eriococcus devonien-sis (Green), E. glyceriae Green, E. greeni Newstead, E. inermis Green, E. insignis Newstead, E. munroi (Boratynski), E. placidus Green, E. pseudinsignis Green, E. spurius (Modeer) and Pseudochermes fraxini (Kaltenbach), are redescribed; the twelfth species, E. cantium, is described as new. Four introduced species, E. lagerstroemiae Kuwana, Kuwanina parva (Maskell), Noteococcus hoheriae (Maskell) and Ovaticoccus agavium (Douglas), are discussed. Coccus buxi Fonscolombe, the type-species of Eriococcus Targioni Tozzetti, is redescribed, as are Coccus spurius Modeer, Acanthococcus aceris Signoret and Rhizococcus gnidii Signoret, the type-species of Gossyparia Signoret, Acanthococcus Signoret and Rhizococcus Signoret respectively. In agreement with some earlier works ? these three genera remain synonyms of Eriococcus but Greenisca Borchsenius and Kaweckia Koteja & Zak-Ogaza are newly synonymised with Eriococcus. R. gnidii is newly synonymised with E. thy mi (Schrank). An unnamed species of Eriococcus near E. buxi, occurring in the U.S.S.R. and Turkey, is also discussed and lectotypes of the British species are designated, where appropriate. There are sections also on morphology, biology and economic importance. Introduction The family Eriococcidae has been formerly associated with the Pseudococcidae, or mealybugs, but the two are now considered to be distinct, and Afifi (1968) has given good characters to separate the adult males of both families. Ferris (1957a, 1957ft) discussed numerous genera, based on the female, that might be included in the Eriococcidae, and defined the family, mainly on negative characters or without certain characters normally found in other families of scale insects. Many genera that have been included in the family have never been studied critically and their affinities may lie elsewhere. In order to establish the true relationships and possible phylogeny of the Eriococcidae, Dr J. M. Cox, British Museum (Natural History), and the present writer are currently studying the group on a world basis, and it is hoped to publish on these aspects later. In the meantime this Bull. Br. Mus. Nat. Hist. (Ent . ) 51 (4) : 347-393 Issued 28 November 1985
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