Valid Names Results

Matsucoccus bisetosus Morrison, 1939 (Matsucoccidae: Matsucoccus)

Nomenclatural History

• Matsucoccus bisetosus Morrison 1939: 3. Type data: USA: California, Lassen National Forest, near Willow Spring, on Pinus ponderosa, August 8, 1936.. Holotype, female, Type depository: Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; accepted valid name

Common Names

• ponderosa pine twig scale Gill1993

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Foes:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• HodgsoFo2006: pp.57 ( Adult (M) ) []
• Gill1993: pp.42 ( Adult (F) ) [USA, California]
• RayWi1984: pp.768-769 ( Adult (F) ) [North America]
• Boraty1952a: pp.321-324 ( Adult (F) ) [World]

Remarks

• Biology: The female lays an average of 194 eggs in the soft wax sac and the incubation period ranges from 20 to 31 days depending on the climatic conditions (Gavrilov-Zimin, 2018)
• Economic Importance: Has been found in USA, California to be associated with branch decadence in both young and mature pines of the species Pinus ponderosa and P. jeffreyi (McKenzie, 1942). McKenzie (1942a) suggested that the principal natural control factor is the pressure exerted by the growing tree forcing the bark plates against the insects or by the growing scales forcing themselves out of shape between the narrow bark plates, or both.
• General Remarks: Description and illustration of adult female by Morrison (1939) and by Gill (1993). Description and illustration of adult male by Beardsley (1968).

Illustrations

Citations