Fruiting hybrids are reported for the first time between the genera Citrus L. and Citropsis (Engl.) Swing. & M.Kell. Conventional hybridization using the recently described species Citrus wakonai P.I.Forst. & M.W.Sm. and Citropsis gabunensis (Engl.) Swing. & M.Kell. resulted in high rates of fruit set and seed formation. Although seed were only half normal size, over 90% germinated without the need for embryo rescue techniques. Plant losses were high during the first few months but after six months, the 327 surviving hybrids were potted on. These grew vigorously on their own roots and 35 of them flowered within two years of sowing. Plants flowered continuously but all were pollen-sterile and ovaries abscised shortly after petal fall. However, at 25 months, two newly flowering hybrids began setting fruit. The development, identification, morphology, breeding efficiency, and future implications of this unique germplasm are described.

Both sexes of oriental scale, Aonidiella orientalis, were exposed to the parasitoid Comperiella lemniscata at the beginning of the first, second and third female instars. The parasitoid successfully oviposited and developed in second-and third-instar female scales, but male scales were used as hosts only in their second instar and at low levels. When given a choice, C. Iemniscata oviposited only in third-instar female scales.

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