Ferrisia meridionalis Williams

Kaydan, M. B. & Gullan, P. J., 2012, 3543, Zootaxa 3543, pp. 1-65 : 35

Ferrisia meridionalis Williams

( Fig. 13)

Ferrisia meridionalis Williams, 1985b: 255 .

This South American species has been recorded from Argentina, Chile, Paraguay and Uruguay on several unrelated host plants ( Williams 1985b; Williams & Granara de Wıllink 1992). The holotype is from San Vincente in Paraguay, where it was collected on the leaves of Manihot esculenta (Euphorbiaceae) . The diagnostic features of the adult female of F. meridionalis are the complete absence of multilocular pores (including from around the vulva), the absence of small tubular ducts marginally, the presence of minute translucent pores on the dorsal surface of the hind coxa, the minute pores on the rim of the dorsal enlarged tubular ducts touching the rim of the duct opening (0–2 minute pores per duct), and two pairs of well-developed ostioles. The illustration of the adult female in Williams (1985b) and Williams & Granara de Willink (1992) has been reproduced here with some modification ( Fig. 13).

We examined the holotype of this species (from the BMNH), as well as one adult female ex grape ( Vitaceae ) from Argentina (in USNM), another ex Baccharis (Asteraceae) from Uruguay (in USNM), and four adult females ex Hypericum perforatum (Hypericaceae) from Chile (three slides in BME, one in USNM).