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The biology and management of aerial populations of woolly apple aphid, Eriosoma lanigerum (Hausmann) (Homoptera: aphididae)
(Stellenbosch : Stellenbosch University, 2001-03)
ENGLISH ABSTRACT: The basic biology of Eriosoma lanigerum (Hausmann) and its natural enemy, Aphelinus mali (Haldeman), was investigated in the Western Cape Province of South Africa. The first instar nymph can be ...
A monograph of the genus Helicotylenchus Steiner,1945 (Nemata: Hoplolaimidae)
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: The genus Helicotylenchus Steiner of the family Holplolaimidae is reviewed. The different morphometric and morphological characters used in species description are discussed. Thirty-five species occurring ...