Valid Names Results

Diaspidiotus ehrhorni (Coleman, 1903) (Diaspididae: Diaspidiotus)

Nomenclatural History

• Aspidiotus (Diaspidiotus) ehrhorni Coleman 1903: 68. Type data: USA: California, Siskiyou County, near Sisson Mt. Shasta, concealed among and underneath the lichens on the bark of Abies concolor; collected by E.M. Ehrhorn, September 4, 1901.. Syntypes, female, Type depository: Davis: The Bohart Museum of Entomology, University of California, California, USA; accepted valid name
• Aspidiotus ehrhorni Coleman, 1903; Sanders 1906: 13. change of combination
• Diaspidiotus ehrhorni (Coleman, 1903); MacGillivray 1921: 413. change of combination

Common Names

• Ehrhorn scale McKenz1956

Ecological Associates

Hosts:

Families: 2 | Genera: 4

Geographic Distribution

Keys

• Gill1997: pp.113 ( Adult (F) ) [Species of California]
• McKenz1956: pp.25 ( Adult (F) ) [U.S.A.: California]
• Ferris1942: pp.32 ( Adult (F) ) [North America]

Remarks

• Structure: Female scale nearly circular, about 2 mm in diameter; very slightly convex; dark gray, with light yellow exuviae at apex; covered with minute granules and resembling the lichens under which it is found; beneath this outer scale is a dark reddish-brown skin enclosing the insect; ventral scale very thin, transparent and white (Coleman, 1903). Scale of the female gray, flat, circular, exuviae subcentral; that of the male somewhat elongate oval, the exuvia near one end (Ferris, 1938a). Colour photograph by Gill (1997).
• Biology: Occurring on the bark, frequently concealed beneath lichens (Ferris, 1938a).
• General Remarks: Description and illustration of adult female by Ferris (1920b, 1938a), McKenzie (1956) and by Gill (1997).

Illustrations

Citations