Valid Names Results

Stomacoccus platani Ferris, 1917 (Steingeliidae: Stomacoccus)

Nomenclatural History

• Stomacoccus platani Ferris 1917a: 375. Type data: USA: California, Santa Clara County, Stevens Creek, and at Pasadena, on Platanus racemosa.. Syntypes, female, Type depository: Davis: The Bohart Museum of Entomology, University of California, California, USA; accepted valid name Illustr.

Common Names

• sycamore scale Gill1993
• Escama del sicomoro KondoGi2022a

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

Remarks

• Systematics: The genus Stomacoccus contains 2 described species, S. capsulatus Ferris, known from southern Arizona, and the similar S. platani, which is a little more widespread. Both are found on Platanus spp. Stomacoccus platani has 6–12 digitules per claw, whereas S. capsulatus has more than 20. A study has shown that S. platani has an unusual number of 20 microtubules in the sperm. (Kondo & Gill (2022a) in T. Kondo & G.W. Watson, 2022)
• Structure: Colour photograph of adult female, male and cyst given by Gill (1993). Adult female elongate ovoid, about 2.0 mm long. Yellowish sedentary nymphs and legless, cyst-like preadult females and their cast skins, up to 1.5 mm long. Adult male wingless, thrips-like, about 0.5 mm long, orange to pale yellow. (Kondo & Gill (2022a) in T. Kondo & G.W. Watson, 2022)
• Biology: Life history and host plants in California by Brown & Eads (1965). Stomacoccus platani reproduces sexually; there are at least 9 generations a year. (Kondo & Gill (2022a) in T. Kondo & G.W. Watson, 2022)
• Economic Importance: Platanus leaves infested by S. platani show yellow or brown necrotic spots, causing cosmetic damage. Other symptoms include leaf distortion, premature leaf drop, stunted growth and dieback of branches and twigs. (Kondo & Gill (2022a) in T. Kondo & G.W. Watson, 2022)
• General Remarks: Description and illustration of nymphs, adult female and adult male by Morrison (1928). Description of adult female by Ferris (1917a) and by Gill (1993). Description and illustration of adult male by Hodgson & Foldi (2006).

Illustrations

Citations