Valid Names Results

Hemiberlesia ithacae (Ferris, 1938) (Diaspididae: Hemiberlesia)

Nomenclatural History

• Aspidiotus abietis Comstock 1883: 57. Type data: USA: New York, Ithaca, on lower surface of leaves of hemlock, Abies canadensis.. Syntypes, female, Type depository: Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; junior homonym Notes: Homonym of Aspidiotus abietis Schrank, 1776 Illustr.
• Aspidaspis ithacae Ferris 1938a: 185. replacement name Replacement name for Aspidiotus abietis Comstock, 1883 Illustr.
• Abgrallaspis ithacae (Ferris, 1938); Davidson 1964: 638. change of combination
• Gonaspidiotus ithacae (Ferris, 1938); Borchsenius 1966: 301. change of combination
• Abgrallaspis ithicae (Ferris, 1938); Beardsley, J.W., Davidson, J.A., Howell, J.O., Kosztarab, M., Miller, D.R., Nakahara, S. & Stoetzel, M. 1976: 105. misspelling of species epithet
• Abgrallaspis ithaeae (Ferris, 1938); Nakahara 1982: 2. misspelling of species epithet
• Hemiberlesia ithacae (Ferris, 1938); Normark, Morse, Krewinski & Okusu 2014: 44. change of combination

Common Names

• hemlock scale Comsto1883 MillerDa2005 Stimme2000

Ecological Associates

Hosts:

Families: 1 | Genera: 4

Geographic Distribution

Keys

• MillerDa2005: pp.29-30 ( Adult (F) ) [Field Key to Economic Armored Scales] Key as: Abgrallaspis ithacae
• Koszta1996: pp.410-411 ( Adult (F) ) [Northeastern North America] Key as: Abgrallaspis ithacae
• Davids1964: pp.639-640 ( Adult (F) ) [North America] Key as: Abgrallaspis ithacae
• Ferris1942: pp.30 ( Adult (F) ) [North America]

Remarks

• Structure: Female scale resembles that of Aspidiotus pini except that it is usually more nearly circular; colour dark gray, often approaching black, with margin lighter, and sometimes with a bluish, brownish, or purple tinge; 1.3 - 2 mm long, width about 9/10 of the length (Comstock, 1883). Scale of the female circular, flat, blackish centrally and paler about the margins, exuviae central; that of the male elongate oval, blackish, exuvia near one end (Ferris, 1938a).
• Biology: Occurring on the needles (Ferris, 1938a).
• Economic Importance: Regarded a pest of hemlock (Miller & Davidson, 1990).
• General Remarks: Description and illustration of adult female by Ferris (1938a) and by Kosztarab (1996). Description and illustration of female, male nymphs, male pupa and prepupa by Stoetzel & Davidson (1974a).

Illustrations

Citations