Valid Names Results

Trionymus violascens Cockerell, 1913 (Pseudococcidae: Trionymus)

Nomenclatural History

• Trionymus violascens Cockerell 1913: 143. Type data: U.S.A.: Colorado, Garfield County, Glenwood Springs, on Agropyron sp.. Lectotype, female, by subsequent designation (MillerMc1973,537). Type depository: Albany: New York State Museum Insect Collection, New York, USA; Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; accepted valid name
• Erium violascens (Cockerell, 1913); Lindinger 1935a: 122. change of combination
• Trionymus furvus McKenzie 1967: 473. Type data: U.S.A.: California, Inyo County, near Bishop, on Elymus triticoides. Holotype, female, Type depository: Davis: The Bohart Museum of Entomology, University of California, California, USA; junior synonym (discovered by MillerMc1973, 537).

Common Names

• dusky grass mealybug McKenz1967
• violet-colored mealybug MillerMc1973

Ecological Associates

Hosts:

Families: 1 | Genera: 2

Geographic Distribution

Keys

• MillerMc1973: pp.531 ( Adult (F) ) [North America]
• McKenz1967: pp.460, 461 ( Adult (F) ) [U.S.A., California]
• McKenz1961: pp.48 ( Adult (F) ) [North America]
• McKenz1960: pp.765 ( Adult (F) ) [North America]
• Ferris1953a: pp.483 ( Adult (F) ) [North America]
• Ferris1950b: pp.252 ( Adult (F) ) [North America ]

Remarks

• Economic Importance: Recorded by Cockerell & Robinson (1915) as being destructive to grasses.
• General Remarks: Good description and illustration of the adult female given by Ferris (1950b), McKenzie (1967) and by Miller & McKenzie (1973).

Illustrations

Citations