Valid Names Results

Rhizaspidiotus dearnessi (Cockerell, 1898) (Diaspididae: Rhizaspidiotus)

Nomenclatural History

• Aspidiotus dearnessi Cockerell 1898s: 267. Type data: CANADA: Ontario, shore of Lake Huron, on Arctostaphylos uva-ursi.. Syntypes, female, Type depository: Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; accepted valid name
• Aspidiotus (Targionia) dearnessi Cockerell, 1898; Cockerell 1899a: 395. change of combination
• Aspidiotus (Targionia) gutierreziae Cockerell & Parrott 1899: 277. Type data: U.S.A.: New Mexico, Mesilla Valley, near the Agricultural College, on stems of Gutierrezia lucida.. Syntypes, female, Type depository: Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; junior synonym (discovered by Ferris1943a, 99).
• Aspidiotus (Targionia) helianthi Parrott 1899a: 176. Type data: U.S.A.: Kansas, Wabawnsee County, near Hackberry Glen, on roots of a sunflower, Helianthus annuus.. Syntypes, female, Type depository: Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; junior synonym (discovered by Ferris1941e, 44). Illustr.
• Targionia dearnessi (Cockerell, 1898); Leonardi 1900: 343. change of combination
• Targionia gutierreziae (Cockerell & Parrott, 1899); Leonardi 1900: 343. change of combination
• Targionia helianthi (Parrott, 1899); Fernald 1903b: 297. change of combination
• Chorizaspidiotus gutierreziae (Cockerell & Parrott, 1899); MacGillivray 1921: 432. change of combination
• Remotaspidiotus dearnessi (Cockerell, 1898); MacGillivray 1921: 434. change of combination
• Rhizaspidiotus helianthi (Parrott, 1899); MacGillivray 1921: 431. change of combination
• Chorizaspidiotus guterriziae (Cockerell & Parrott, 1899); MacGillivray 1921: 432. misspelling of species epithet Notes: Mis-spelling of Aspidiotus (Targionia) gutierreziae.
• Aspidiotus gutierreziae Cockerell & Parrott, 1899; Ferris 1937a: 33. change of combination
• Pseudodiaspis helianthi (Parrott, 1899); Lindinger 1937: 194. change of combination
• Rhizaspidiotus dearnessi (Cockerell, 1898); Ferris 1938a: 263. change of combination
• Targionia (Rhizaspidiotus) dearnessi (Cockerell, 1898); Merrill 1953: 80. change of combination
• Rhizaspidiotus dearnessi (Cockerell, 1898); McKenzie 1956: 26. revived combination (previously published)

Common Names

• dearness scale Dekle1965c McKenz1956

Ecological Associates

Hosts:

Families: 10 | Genera: 27

Foes:

Families: 1 | Genera: 2

Geographic Distribution

Keys

• MillerDa2005: pp.29-35 ( Adult (F) ) [Field Key to Economic Armored Scales]
• McKenz1956: pp.26 ( Adult (F) ) [U.S.A.: California]
• Ferris1942: pp.40 ( Adult (F) ) [North America]
• Lawson1917: pp.246 ( Adult (F) ) [U.S.A.: Kansas]
• Cocker1905b: pp.201 ( Adult (F) ) [U.S.A.: Colorado]

Remarks

• Structure: Cockerell (1898s) described the scale cover: "Female scale suboval, about 2 mm in diameter; moderately convex; pale gray, more or less concentrically ridged; with the orange-yellow, partly exposed exuviae quite to one side; ventral scale thick and distinct; the scale resemble minute oyster-shells". Ferris (1938a) described the scale cover: "Female scale of the female gray or brownish, circular, high convex, exuviae central, a strong ventral scale formed; male scale elongate, brown, exuvia at one end". Colour photograph by Gill (1997).
• Biology: Occurring on the crowns and stems, at times below the surface of the ground (Ferris, 1938a).
• General Remarks: Description and illustration of adult female by Ferris (1920b, 1938a), McKenzie (1956), Kosztarab (1996) and by Gill (1997).

Illustrations

Citations