Valid Names Results

Tridiscus distichlii (Ferris, 1918) (Pseudococcidae: Tridiscus)

Nomenclatural History

• Trionymus distichlii Ferris 1918d: 69. Type data: U.S.A.: California, Palo Alto, on Distichlis spicata. Syntypes, female, Type depository: Davis: The Bohart Museum of Entomology, University of California, California, USA; Paris: Museum National d'Histoire naturelle, France; accepted valid name Illustr.
• Erium distichlii (Ferris, 1918); Lindinger 1935a: 122. change of combination
• Tridiscus distichlii (Ferris, 1918); Ferris 1950b: 249. change of combination

Common Names

• coastal grass mealybug McKenz1967

Ecological Associates

Hosts:

Families: 2 | Genera: 3

Geographic Distribution

Keys

• KozarFo1992: pp.210 ( Adult (F) ) [North America]
• Tang1992: pp.119 ( Adult (F) ) [China]
• MillerMc1973: pp.527 ( Adult (F) ) [North America]
• McKenz1967: pp.455 ( Adult (F) ) [U.S.A., California]
• Ferris1953a: pp.477 ( Adult (F) ) [North America]

Remarks

• Biology: Living on the upper surfaces of the leaves or in the axils.
• General Remarks: Good description and illustration of the adult female given by Ferris (1950b) and by McKenzie (1967). Tang (1992: 59) "synonymized" Pseudococcus distichlii var. indicus Green [NOMEN NUDUM], as published by Ramakrishna Ayyar (1930: 61), with this species. This linkage appears to be doubtful, because the NOMEN NUDUM was from India, whereas T. distichlii is distributed in North America.

Illustrations

Citations