Filippia gemina spec. nov.; F. polychaeta spec. nov.; F. stenochaeta spec. nov.; and F. strigosa spec. nov. are descriptionbed. A key for the separation of all six species of the genus Filippia so far known from South Africa is included. The status of Lichtensia asparagi Brain, 1920, and L. peringueyi Joubert, 1925, is also briefly reviewed.
In southern Africa there are some 30 species belonging to a single genus Xylocopa Latreille. The most important features of nesting woods used by carpenter bees are hardness and texture, botanical affinities being of little importance except for a few very specialised species.
Paracimex africanus spec. nov. is descriptionbed from the nests of two species of swifts, Tachymarptis melba africanus (Temminck) and T. aequalorialis gelidus Brooke (Aves: A podidae) in the Transvaal and Rhodesia respectively. The new species is differentiated from the 12 Paracimex known from Southeast Asia and the Pacific Islands, and comments are made on the supraspecific classification of its hosts.
The mandibular gland secretion of Paltothyreus tarsatus workers was found to consist of a number of volatile components, two of which were present in large quantities. The two major components were identified as dimethyl disulphide and dimethyl trisulphide. These components were also found in the mandibular glands of males and dealate queens.
The name, S. rubrus is provided for the new species, S. rubripes of authors not Boheman. The species, S. macrorubrus is discussed and its close morphological and biological connections with S. rubrus are indicated.
Four new species, Bidessus ruandensis, B. rossi, B. fulgidus, and B. straleni, and two new subspecies, B. sharpi nigeriensis and B. sharpi sudanensis are descriptionbed. In addition information concerning the already descriptionbed species of African Bidessus has been collated and where possible expanded.
The new species Eremiaspis graminis, which is the second in the genus, is descriptionbed from South West Africa. The new genus Phaspis is established for the new species P. lobulata, which is descriptionbed from the Transvaal. The cotypes of Aonidia glandulosa Newstead, the type-species of Pseudotargionia Lindinger, were studied and the lectotype has been selected. The identification of P. glandulosa from southern Africa is confirmed, and notes are presented on the variation in some features of this species.
In the Chalcididae a new genus, Youngaia, and the following five species are descriptionbed: Chalcis vera from South Africa and South West Africa, Youngaia spinosa from Ghana, Hockeria nudaureliae from South Africa and Mozambique, Hockeria crassa from Angola and South Africa (both parasites in pupae of saturniid moths) and Hybothorax palparicida from South Africa. The known African species of Hockeria are listed, five of them being transferred from other genera and two being removed from Hockeria to Lasiochalcidia.
A new genus of Encyrtidae, subfamily Encyrtinae, is descriptionbed for a new South African species, Argutenryrtus luteolus, reared from a soft scale insect. The relationship of this genus with other genera, including Microterys Thomson and Blastothrix Mayr, is briefly discussed.
The family Plumariidae comprises two subfamilies and four genera. The Heterogyninae includes only Heterogyna from Greece; the Plumariinae includes Myrmecopterina (southern Africa), Plumarius and the new genus Plumaroides (both from South America). Selected characters of each genus are figured and a key to subfamilies and genera is included for males (the female is known for Plumarius only). The new genus and species Plumaroides andalgalensis is descriptionbed from Catamarca province, Argentina.