Icerya Signoret

Watson, Gillian W., 2022, Towards identification of the scale insects (Hemiptera: Coccomorpha) of continental Africa: 2. Checklists and keys to six archaeococcoid families, Zootaxa 5105 (3), pp. 301-356 : 334

publication ID

https://doi.org/ 10.11646/zootaxa.5105.3.1

publication LSID

lsid:zoobank.org:pub:187B04D7-4C35-4E27-9B2D-A616BF59F380

DOI

https://doi.org/10.5281/zenodo.6343200

persistent identifier

https://treatment.plazi.org/id/03D687D0-FF87-987B-19E8-CB7FFA2EE2F1

treatment provided by

Plazi

scientific name

Icerya Signoret
status

 

Genus Icerya Signoret View in CoL View at ENA

Icerya View in CoL is a tropical to subtropical genus of 38 species, five of which have been recorded from continental Africa ( García Morales et al. 2016). They are relatively large insects ( Fig. 10 View FIGURE 10 ), so heavy infestations extract significant volumes of sap and can cause drying of tissues, premature leaf drop, sooty mould growth and reduction in fruit harvests. Woody hosts are preferred, and the insects feed on stems and leaf veins rather than on the leaf lamella ( Kondo & Watson 2022 in press).

Key to adult females of species of Icerya View in CoL in continental Africa, derived from Unruh and Gullan (2008). See Figs 10 View FIGURE 10 and 22 View FIGURE 22 . Icerya corticalis View in CoL is not included because it is known only from males.

1(0) Setae on abdominal margin black in slide mount. Abdominal spiracles numbering 2 pairs. Open-centre pores present.................................................................................................... purchasi View in CoL

- Setae on abdominal margin stained red in slide mount. Abdominal spiracles numbering 3 pairs. Open-centre pores present or absent.............................................................................................. 2

2(1) Open-centre pores present.............................................................................. 3

- Open-centre pores absent...................................................................... aegyptiaca View in CoL

3(2) Ovisac band present. Each open centre pore with a spur on inner edge of rim ( Fig. 22 View FIGURE 22 ). Open-centre pores present around margin and often forming short transverse rows across parts of dorsum............................... seychellarum View in CoL ( Fig. 10 View FIGURE 10 )

- Ovisac band absent. Each open centre pore without a spur on inner edge of rim ( Fig. 22 View FIGURE 22 ). Open-centre pores generally restricted to margins, not forming transverse rows on dorsum................................................... natalensis View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Margarodidae

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