Valid Names Results

Unaspis flava (Green, 1899) (Diaspididae: Unaspis)

Nomenclatural History

• Chionaspis flava Green 1899a: 150-151. Type data: SRI LANKA: Pudaluoya, on Antidesma bunius. Syntypes, female, Type depository: London: The Natural History Museum, England, UK; accepted valid name Illustr.
• Phenacaspis flava (Green, 1899); Fernald 1903b: 238. change of combination
• Ametrochaspis flava (Green, 1899); MacGillivray 1921: 359. change of combination
• Trichomytilus flava (Green, 1899); Lindinger 1933a: 165. change of combination
• Dinaspis flava (Green, 1899); Green 1937: 323. change of combination
• Unaspis flava (Green, 1899); Rao 1949: 63. change of combination

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• NiuFe2019: pp.579 ( Adult (F) ) [Species of Unaspis]
• Watson2015a: pp.437 ( Adult (F) ) [slide-mounted adult females of Unaspis]
• Rao1949: pp.65 ( Adult (F) ) [Key to species of Unaspis]
• Green1899a: pp.108 ( Adult (F) ) [Synopsis of Chionaspis species] Key as: Chionaspis flava

Remarks

• Systematics: Green described two species from Antidesma bunius from the same locality, Pundaluoya, Ceylon, one being U. flava and the other U. permutans. The two are very similar and may be the same. However, they differ as follows: in U. permutans the scale is much more slender; the area occupied by the sclerotized prosoma of the adult female involves one more abdominal segment in U. permutans than it does in U. flava; and the dorsal ducts of the pygidium are much more numerous in U. flava, which has up to 40, than in U. permutans, which has as few as 26 (Rao, 1949).
• Structure: Female scale pointed in front, roundly dilated behind, surface marked with irregular raised lines, canary yellow. Exuviae yellowish, median area of 2nd exuviae thin and transparent. Ventral scale rather strongly developed, and persistent towards the margins, where it forms a ragged fringe partially enveloping the insect, 3.0 mm long, 1.75 mm wide. Male scale snowy white, exuviae yellowish. Adult female bright yellow, pygidium reddish. Pygidium with a deep median cleft containing the median lobes, which are elongate, diverging and serrate on the free edge. 2nd and 3rd lobes prominent, duplex, each lobule constricted at base. Adult male bright red (Green, 1899a).
• General Remarks: Detailed descriptions and illustrations by Green (1899a) and Rao (1949).

Illustrations

Citations