Kozár, F., & Miller, D.R. 2000 World revision of Ortheziola Šulc (Homoptera: Coccoidea: Ortheziidae) with descriptions of eleven new species.. Systematic Entomology 25: 15-45.

Notes: Soil samples and museum collections were analysed from all zoogeographic regions of the world. From this material eleven new species of Ortheziola are described from Africa and the U.K., five additional species are redescribed and a key is presented for the identification of all sixteen species. A slightly modified concept of the genus is presented and several new characters are given as diagnostic of the genus. A phylogenetic hypothesis is given based on analysis of the morphological features of adult females. Results show that Ortheziola is most diverse in eastern Africa where relatively more advanced species occur. Basal species occur primarily in western Africa and Asia.

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