NEW PSEUDOCOCCIDAE (HOMOPTERA : COCCOIDEA) FROM AFRICA By G. DE LOTTO THIS paper contains the descriptions of a first batch of thirty new species of Pseudococcidae from Africa south of the Sahara, found during the study of a large amount of material accumulated in the collection of the Scott Agricultural Labora-tories, Nairobi. Many more new species are at hand which together with sundry notes on species already known from the area under review will be dealt with in a further paper to be published at a later date. Many of the species described in the following pages cannot properly be placed in any known genus and their inclusion in the genera Pseudococcus, Trionymus, etc., has therefore to be understood as an entirely provisional measure pending a revision of the family. The nomenclature used in the descriptions is that adopted by the late Prof. G. F. Ferris in his magnificent work on the scale insects of North America. Allococcus aberiae sp. n. (Plate 20) External appearance of living adults not recorded. Mounted specimens elongate to rather broadly elliptical in outline ; length up to 2-9 mm. Anal lobe cerarii each with two conical spines surrounded by a fairly close group of 30-40 trilocular pores and six to nine auxiliary setae ; area besetting the cerarian spines not chitinized. The spines of the remaining cerarii become more slender and longer anteriorly, where they attain the same size and shape of some of the dorsal body setae and often tend to be set widely apart from each other. Each cerarius has two spines except the preocular cerarii (xvii) each of which at times carries one spine only. Two to eight trilocular pores are associated with each cerarius ; auxiliary setae absent. Ventral side of each anal lobe with an irregularly shaped, poorly defined, elongate chitinized bar, at times much reduced in size due to the absence of the tract between the apical and subapical setae ; occasionally the chitinized bar is missing altogether. Apical seta 220-235 /* long ; subapical 60-75 ju,. 1 Multilocular disc pores set in five groups on the ventral side of the last 1 All measurements in microns refer to the length of the structure for which they are given. ENTOM. 10, 6. 14
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