Vryburgia succulentarum Williams

Family

Pseudococcidae

Field characters

No information available.

Validation characters

Dorsal oral-collar tubular ducts scattered over surface; largest ducts on dorsum of oral collar type, without rims; clusters of oral collars laterad of anterior spiracle and mid coxa; translucent pores present on hind tibia; 2 pairs of cerarii on abdomen.

Comparison

Vryburgia succulentarum is similar to V. viator by having 2 pairs of cerarii, dorsal oral-collar tubular ducts, translucent pores on hind tibia only, few or no dorsal multilocular pores. Vryburgia succulentarum differs (characters of V. viator are in parentheses) primarily by having largest dorsal tubular ducts without definite rim (definite) and without dense clusters of dorsal oral collars in medial areas of thorax (with dense clusters).

U.S. quarantine notes

This species was intercepted at U. S. ports-of-entry 5 times between 1995 and 2012, with specimens originating from Australia and South Africa. We also have examined specimens taken in quarantine from Australia (Echeveria). ScaleNet lists hosts in Aizoaceae, Cactaceae and Crassulaceae. It is most commonly intercepted on Echeveria (Crassulaceae). ScaleNet distribution records for V. succulentarum include Australia (South Australia) and Tasmania, in the Australasian zoogeographic region. 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

Willia1985

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