Family

Pseudococcidae

Catalog

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Field characters

No available information.

Validation characters

Translucent pores present on hind tibia only; oral-collar tubular ducts abundant over dorsum; multilocular pores present on dorsal abdomen, sometimes uncommon; oral-rim tubular ducts absent; 2 pairs of cerarii; oral collars present laterad of anterior spiracles and mid-legs; circulus absent; antennae 8-segmented, 8th segment usually partially or completely divided; claw with denticle.

Comparison

Vryburgia distincta is similar to V. viator (De Lotto) by having dorsal oral collars, dorsal multilocular pores, translucent pores restricted to hind tibia, and 2 pairs of cerarii. Vryburgia distincta can be distinguished (characters of V. viator are given in parentheses) by having large rows of dorsal oral collars on all abdominal segments (restricted to posterior 3 or 4 segments, uncommon), oral rims absent replaced by large oral collars (oral rims present, without large oral collars), numerous oral collars between legs (oral collars rare or absent between legs).

U.S. quarantine notes

This species was intercepted at U. S. ports-of-entry 5 times between 1995 and 2012, with specimens originating from Japan, Namibia, The Netherlands, and South Africa. No older quarantine specimens were examined. Even though ScaleNet lists only one host, Galenia africana (Aizoaceae), it has been intercepted on a variety of other hosts. ScaleNet distribution records for V. distincta include only South Africa. Several other species of Vryburgia other than V. amaryllidis (Bouché), V. distincta (De Lotto), V. succulentarum Williams and V. viator (De Lotto) have been taken at U. S. ports-of-entry including: V. bechuanae (Brain) (South Africa, on “flower"); V. brevicruris McKenzie (The United Kingdom of Great Britain and N. Ireland, on Haworthia; South Africa, on Protea); V. rimariae Tranfaglia (Italy and New Zealand, on Echeveria); V. pretiosa Ferris (Burma, China, Cuba, and The Philippines, on bamboo); and V. trionymoides (De Lotto) (South Africa, on Euphorbia).

Important references

DeLott1964

All references mentioned

Vryburgia distincta