Field characters

No information available.

Validation characters

Oral-rim tubular ducts present ventrally on head and anterior thorax; multilocular pores present or absent from lateral areas of abdominal segments; multilocular pores present on segments IV-VIII, absent from thorax and head; small cluster of oral-collar tubular ducts laterad of anterior spiracle; oral collars absent laterad of mid pair of legs; circulus normally present, rarely absent; cerarii with 2 conical setae; 9-17 pairs of cerarii, some present on anterior thorax and head; oral-rim tubular ducts covering dorsum, absent from segment VIII; anal bar present.


Paracoccus ferrisi is similar to P. herreni by having oral collars near anterior spiracle, dorsal oral-rim tubular ducts scattered over surface, multilocular pores absent from thorax. Paracoccus ferrisi can be distinguished (characters of P. herreni are in parentheses) by having ventral oral rims on thorax and head (lacking), and multilocular pores present or absent from lateral areas of abdominal segments (present).

U.S. quarantine notes

This species was intercepted at U. S. ports-of-entry 40 times between 1995 and 2012, with specimens originating from Costa Rica, El Salvador, Guatemala, and Mexico. We also have examined specimens taken in quarantine from El Salvador (Fernaldia); Mexico (Catalpa, Coriandrum, Crataegus, Gardenia, Malus, Origanum, pepper, Punica, Rosmarinus). ScaleNet lists hosts in 7 plant families. It is intercepted on a variety of plants, including citrus, hawthorn and rosemary. ScaleNet distribution records for P. ferrisi include only Mexico. Several species of Paracoccus other than P. brunerae (Brain), P. ferrisi, P. herreni Williams & Granara de Willink, P. interceptus Lit, P. lycopersici Ezzat & McConnell, P. marginatus Williams & Granara de Willink, P. mexicanus Ezzat & McConnell and P. solani Ezzat & McConnell have been intercepted at U. S. ports-of-entry including: P. hamoni Williams and Granara de Willink (Mexico, on Cephalocereus); P. circuliprivis Ezzat and McConnell (Mexico, on Thomsoniella); P. invectus Williams (Thailand and India, on orchids, including Dendrobium); and P. reductus Ferris (Mexico, on Yucca).

Important references

EzzatMc1956; WilliaGr1992.

Scalenet catalog and citation list

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