Valid Names Results

Chionaspis alnus Kuwana, 1928 (Diaspididae: Chionaspis)

Nomenclatural History

• Chionaspis alnus Kuwana 1928: 7-8. Type data: JAPAN: Honshu, Tokyo, on Alnus japonica, by S.I. Kuwana. Syntypes, female, Type depository: Ibaraki-ken: Insect Taxonomy Laboratory, National Institute of Agricultural Environmental Sciences, Kannon-dai, Yatabe, Tsukuba-shi, (Kuwana), Japan; accepted valid name Illustr.
• Chionaspis alnicola Lindinger 1949: 211. replacement name that is unjustified (discovered by Borchs1966, 118). Replacement name for Chionaspis alni Signoret Notes: Lindinger (1949) created the replacement name Chionaspis alnicola, stating that the species name C. alnus was improperly formed and should have been C. alni. Since C. alni was described by Signoret in 1869, Lindinger suggested a replacement name for what he thought was the junior homonym. However, the original species name Chionaspis alnus is valid and therefore the replacement name is invalid.
• Phenacaspis alnus (Kuwana, 1928); Borchsenius 1950b: 198. change of combination
• Phenacaspis alnicola (Lindinger, 1949); Ferris 1955d: 44. change of combination
• Chionaspis alnus Kuwana, 1928; Knipscher, et al. 1976 1976: 1. revived combination (previously published) Notes: Phenacaspis was confirmed as a synonym of Chionaspis in Knipscher, et al., 1976 reestablishing the combination Chionaspis alnus.
• Chionaspis betulae Chen 1983: 90. Type data: CHINA: Liaoning, Shenyan, on Betula platyphylla, ?/06/1980. Syntypes, female, Type depository: Chengdu: Plant Protection Research Institute, Sichuan Academy of Agricultural Sciences, Sichuan, China; synonym and homonym (discovered by Tang1984b, 129). Replacement name for Chionaspis betulae Tippins & Beshear 1970b Illustr.
• Chionaspis cheni Takagi 1985: 21. replacement name Replacement name for Chionaspis betulae Chen 1983

Common Names

• alder scale Danzig1986a
• Japanese alder scale KSPP1972

Ecological Associates

Hosts:

Families: 2 | Genera: 3

Foes:

Families: 4 | Genera: 4

Geographic Distribution

Keys

• Danzig1993: pp.319 ( Adult (F) ) [Key to species of Chionapis]
• Danzig1988: pp.723 ( Adult (F) ) [Key to Chionaspis species of the Far East USSR]
• Danzig1986a: pp.367 ( Adult (F) ) [Key to species of Chionaspis]
• Danzig1980b: pp.310 ( Adult (F) ) [Key to species of Chionaspis]
• Takagi1961: pp.33 ( Adult (F) ) [Key to species of Chionaspis]
• Takaha1956d: pp.55 ( Adult (F) ) [Key to some Japanese species of Chionaspis] Key as: Chionaspis alnus
• Kuwana1928: pp.3 ( Adult (F) ) [Key to species of Chionaspis]

Remarks

• Systematics: Chionaspis alnus somewhat resembles C. wistariae, except the anterior group of 3rd row and posterior row of dorsal gland orifices are smaller than the other groups; Also, the orifices in each group of circumgenital gland orifices are numerous (Kuwana, 1928).
• Structure: Adult female roughly parallel-sided, widest across the metathorax. Dorsal pores in at least 6 rows (Ferris, 1955d).
• Biology: Eggs hibernate, nymphal emergence near Novoaleksandrovsk was observed in late May and imago was seen in late July. Egg laying took place in early September. In the subtropical regions of Korea and Japan, there are two generations per year, females of the summer generation live on leaves (Danzig, 1986a).
• Economic Importance: Miller & Davidson (1990) list this insect as a pest.
• General Remarks: Descriptions and illustrations by Kuwana (1928) and Danzig (1986a).

Illustrations

Citations