Species: Planococcus halli Ezzat and McConnell - Catalog

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Common name: Hall mealybug

Field Characters: We expect the field appearance of this species to be the same as for P. ficus, but we have been unable to find a description in the literature.

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Validation characters: Usually with less than 6 ventral oral-collar tubular ducts laterad of middle coxae (count both sides); fewer than 5 ventral oral-collar tubular ducts between antennae; without multilocular pores behind front coxa (rarely with 1); translucent pores on hind coxa and tibia, absent from femur; usually with 1 or more dorsolateral tubular ducts that often appear as oral rims; anal bar present; 18 pairs of cerarii; no auxiliary setae.

Comparison: Planococcus halli is very similar to P. minor and P. ficus, by having few ventral oral collars on the head and laterad of the middle coxae. Planococcus halli differs by lacking multilocular pores behind the anterior coxa (rarely with 1) and by lacking translucent pores on the hind femur. P. ficus usually has multilocular pores behind the front coxa and has translucent pores on the hind femur. Planococcus minor usually has multilocular pores behind the front coxa and lacks translucent pores on the hind femur. Frankly these species are difficult to distinguish, but P. ficus is frequently found on grape, P. halli is usually on sweet potatoes, and P. minor is on a diversity of hosts.

U.S. quarantine notes: This species is commonly taken on Dioscorea (yams), but has been recorded from Annona, Epipremnum, Ipomoea, and Melicoccus. It has been intercepted at US ports-of-entry from Barbados, Belize, Brazil, British West Indies, Cameroon, Cuba, Gabon, Ghana, Haiti, Jamaica, Liberia, Nigeria, Panama, South Africa, and Trinidad. Several species of Planococcus other than P. citri, P. ficus, P. halli, P. kraunhiae, P. lilacinus, and P. minor have been taken at US ports-of-entry including: P. angkorensis (Takahashi) (China, India, Indonesia, Japan, Malaysia, Philippines, Taiwan, Thailand, and Vietnam on many tropical plants); P. dendrobi Ezzat and McConnell (India, Philippines, Singapore, and Thailand on Cypripedium, Dendrobium, Phalaenopsis, Saccolobium, and Vanda); P. hosnyi Ezzat and McConnell (South Africa on orchid); P. hospitus DeLotto (Uganda on Cyrtorchis); P. japonicus Cox (Japan and the Philippines on Carpinus, Fatsia, Lansium, Malus, Rhododendron, and Vitis); P. kenyae (LePelley) (Nigeria, Sierra Leone on Ficus and Cola); P. litchi Cox (China, Hong Kong, Japan, Philippines, Thailand, and Vietnam on Annona, Dimocarpus, Eriobotrya, Litchi, and Nephelium); P. mali Ezzat and McConnell (New Zealand on Malus and Olearia); P. orchidi Cox (Liberia on orchids); P. philippinensis Ezzat and McConnell (Philippines on Aerides, Cymbidium, Dendrobium, Eria, Phalaenopsis, Spathoglottis, and Vanda).

References: Cox1989; WilliaGr1992.

All references mentioning: Planococcus halli

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