Valid Names Results

Cerococcus parrotti (Hunter, 1899) (Cerococcidae: Cerococcus)

Nomenclatural History

• Lecaniodiaspis parrotti Hunter 1899a: 76. Type data: UNITED STATES: Kansas, Lawrence, on Aesculus glabra, 09/02/1899. Holotype, female, by original designation accepted valid name Notes: According to Lambdin & Kosztarab (1977a) "The original type material from Lawrence Kansas, on Aesculus glabra, consisted of an in situ female test with the female's body totally destroyed by a hymenopteran parasite." Illustr.
• Solenococcus parrotti (Hunter, 1899); Fernald 1903b: 59. change of combination
• Cerococcus parrotti (Hunter, 1899); Lawson 1917: 170. change of combination

Common Names

Ecological Associates

Hosts:

Families: 13 | Genera: 16

Foes:

Families: 4 | Genera: 4

Geographic Distribution

Keys

• HodgsoWi2016: pp.151-152 ( Adult (F) ) [Key to species of Cerococcus]
• Koszta1996: pp.301 ( Adult (F) ) [Cerococcus species of Northeastern North America]
• HamonKo1979: pp.14 ( First instar ) [Cerococcus first instars]
• LambdiKo1977a: pp.37 ( Adult (F) ) [Species of Cerococcus]
• HowellWi1971: pp.20 ( Adult (F) ) [North American species of Cerococcus]

Remarks

• Systematics: This species is close to Cerococcus koebelei (Hamon & Kosztarab, 1979).
• Structure: Adult female is turtle shaped. Ribs on dorsum are apparent, marginal outline forms an oval. Dorsum and side of scale are wine colored, covered in places by grayish white, derm of body is wrinkled, waxy secretion is apparent under ventrum (Hunter, 1899a). The adult female of C. parrotti is characterised by the following combination of character-states: (i) 8-shaped pores on dorsum “closely spaced , usually in swirls although difficult to distinguish” (Lambdin & Kosztarab, 1977, p. 173—but shown as forming a faint reticulate pattern in their figure); (ii) 8-shaped pores on dorsum of three sizes, all quite small; (iii) larger pores restricted to near stigmatic pore bands; smallest pores on posterior abdominal segments and associated with apex of each stigmatic pore band; (iv) cribriform plates subcircular to elliptical, present in submedial groups of two on each side of abdominal segment IV, with anterior plate slightly larger than posterior plate; (v) tubular ducts of two sizes, broader ducts restricted to posterior abdominal segments; narrower ducts frequent elsewhere; (vi) multilocular disc-pores in narrow bands about one pore wide across almost all abdominal segments but absent from metathorax; (vii) stigmatic pore bands bifurcated; (viii) stigmatic pore bands with few spiracular disc-pores, and (ix) leg stubs present. (Hodgson & Williams, 2016)
• Biology: A pupa of a parasitic hymenoptera was found within the original specimen (Hunter, 1899a). This scale has one generation per year and overwinters as eggs in the test in Virginia. Fist instars appear in early to mid May and adults are present in late July (Miller, 1985b).
• General Remarks: Detailed description and illustration by Lambdin & Kosztarab (1977a). Hamon & Kosztarab (1979) provide a detailed description and illustration of the first instar.

Illustrations

Citations