Williams, D.J., Matile-Ferrero, D., & Miller, D.R. 2010 A study of some species of the genus Stictococcus Cockerell (Hemiptera: Sternorrhyncha: Coccoidea: Stictococcidae), and a discussion on Stictococcus vayssierei Richard, a species injurious to cassava in Equatorial Africa with ... from Nigeria.. Zootaxa 2527: 1-27

Notes: [Full title] A study of some species of the genus Stictococcus Cockerell (Hemiptera: Sternorrhyncha: Coccoidea: Stictococcidae), and a discussion on Stictococcus vayssierei Richard, a species injurious to cassava in Equatorial Africa with a description of a new species from Nigeria. Abstract. The adult female of the scale insect Stictococcus vayssierei Richard is described and illustrated. The species feeds on the root system of cassava (Manihot esculenta) (Euphorbiaceae) in Equatorial Africa, affecting tuber formation of the plant. Although damage has been reported only recently, the species has probably remained unnoticed because of its subterranean habit. The distribution and host plants of this species are listed and the segmentation of the adult female of Stictococcus is discussed to help describe the characters in detail when specimens are prepared on microscope slides. Six other species of Stictococcus are described or discussed: S. formicarius Newstead, S. intermedius Newstead, S. pujoli Richard, S. sjostedti Cockerell & Cockerell, S. subterreus Williams, Matile-Ferrero & Miller sp. n., and S. formicarius var. tuberculata Laing which is here raised to specific rank as S. tuberculatus Laing.

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