Mazzeo, G., Suma, P., & Russo, A. 2008 Scale insects on succulent plants in Southern Italy.. Proceedings of the XI International Symposium on Scale Insect Studies, Oeiras, Portugal, 24-27 September 2007. ISA Press Lisbon, Portugal 322 pp.
Notes: Abstract: The authors report the results of surveys on scale insects occurring on succulent plants carried out during the last ten years. The insects have been collected in nurseries, public and private parks and in gardens in Sicily and in other regions of Southern Italy. The greatest number of species has been recorded on Cactaceae and belong to Pseudococcidae (Pseudococcus longispinus (Targioni Tozzetti), Ps. viburni (Signoret), Phenacoccus madeirensis Green, Planococcus citri (Risso), Spilococcus mamillariae (Bouche), Vryburgia rimariae Tranfaglia, Hypogeococcus pungens Granara de Willink), Eriococcidae (Eriococcus coccineus Cockerell), Coccidae (Coccus hesperidum L.) and Diaspididae (Abgrallaspis cyanophilli (Signoret) and Diaspis echinocacti (Bouche)). On Aizoaceae, Aspidiotus nerii Bouche and D. echinocacti have been recorded besides the Pseudococcidae Ps. viburni, V. rimariae, the Coccidae Saissetia coffeae (Walker), Pulvinariella mesembryanthemi (Vallot) and the Diaspididae Entaspidiotus lounsburyi (Marlatt). The mealybugs Ps. longispinus, Dysmicoccus brevipes (Cockerell), D. neobrevipes Beardsley and the armoured scale Acanthomytilus sacchari (Hall) have been collected on Nolinaceae. Only Pseudococcidae have been found on Asclepiadaceae (Ph. madeirensis, Pl. citri, V. rilllariae) and on Crassulaceae (Pl. citri, V. rimariae); the presence of Ph. madeirensis and Ovaticoccus agavium (Douglas) has been recorded on Agavaceae. Rhizoecus cacticans (Hambleton) and Hemiberlesia lataniae Signoret have been collected on Asteraceae and Euphorbiaceae respectively. Brief data about the distribution and economic importance of each species are given.