无前恙螨属--新种记述(蜱螨目:恙螨科)

本描述了采自江苏马铁菊头蝠(Rhinolophus ferrum-eguinum)翅上的无前恙螨属一新种,即宜兴无前恙螨[Walchia(Walchia)neeshini Wang et Xia,sp．nov]。模式标本保存于复旦大学上海医学院寄生虫学教研室。     

Cells--Analogs of the Fat Body in the Parasitic Mite Myobia murismusculi (Schrank) (Trombidiformes: Myobiidae)

In body cavity of Myobia murismusculi females the cells with morphology similar to that in elements of fat body of other arthropods were found. They are characterized by large size, hypertrophied GER, and few secretory granules of two types. No such cells were revealed in males of the same mite species. Fat body in females at the nymphal stage is presented by poorly differentiated cells without secretory inclusions. A probable participation of the described tissue in vitellogenesis as well as the reason for its absence in other species of trombidiform mites are discussed.     

Revisionary notes on the genus Metopolophium Mordvilko, 1914, with keys to European species and descriptions of two new taxa (Homoptera: Aphidoidea)

New and extensively revised keys are given to help identification of the European species of Metopolophium Mordvilko, 1914. The morphs keyed are (1) the apterous viviparous females from Gramineac, (2) the alate viviparous females and (3) the males and oviparous females of those species that overwinter as eggs on Rosa spp. Taxonomic notes are given on some individual species. Two new taxa, M. fasciatum sp. nov., and M. festucae (Theobald) cerealium subsp. nov. are described. Metopolophium myrmecophilum (Theobald) becomes a new synonym of M. festucae (Theobald), sensu stricto , and the resulting question of the possible conservation of the latter, which is the junior subjective synonym, is discussed. A revised checklist of the European species of Metopolophium is given.