Valid Names Results

Cryptococcus williamsi Kosztarab & Hale, 1968 (Cryptococcidae: Cryptococcus)

Nomenclatural History

• Cryptococcus williamsi Kosztarab & Hale 1968: 7. Type data: UNITED STATES: Vermont, N. of Perry, on Acer sp., 01/11/1966, by R.L. Murray. Holotype, female, by original designation Type depository: Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; accepted valid name Notes: Type material also at CDAE. Illustr.

Common Names

• maple bark scale Koszta1996

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Foes:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• Koszta1996: pp.262 ( Adult (F) ) [Cryptococcus species of Northeastern North America]
• MillerMi1993: pp.68 ( Adult (F) ) [Cryptococcus species of the Eastern United States]

Remarks

• Systematics: Slide-mounted adult female with: anal ring without pores; multiloculars present on dorsum; macrotubular ducts of 1 size (Miller & Miller, 1993).
• Structure: Adult female is salmon orange, enclosed in a filamentous ovisac. A filamentous secretion encloses all stages, but may be worn off on some individuals (Kosztarab, 1996).
• Biology: In spring and early summer, crawlers are either born as nymphs or hatch from eggs. Adult female is apparently the overwintering stage and there is 1 generation per year. 20-30 eggs are laid per female (Kosztarab, 1996). The life cycle is carried out in bark crevices of the maple host (Kosztarab & Hale, 1968).
• Economic Importance: This species can be a pest on sugar maple trees (Kosztarab & Hale, 1968).
• General Remarks: Original description and illustration by Kosztarab & Hale (1968). Detailed description and illustration also by Miller & Miller (1993). Detailed description and illustration of first-instar nymph in Miller & Stocks, 2022.

Illustrations

Citations