Valid Names Results

Asterococcus yunnanensis Borchsenius, 1960 (Cerococcidae: Asterococcus)

Nomenclatural History

• Asterococcus yunnanensis Borchsenius 1960d: 115-117. Type data: CHINA: Yunnan, Kunming, on Gardenia sp., 4/06/1957. Holotype, female, by original designation Type depository: St. Petersburg: Zoological Museum, Academy of Science, Russia; accepted valid name Illustr.

Common Names

Ecological Associates

Hosts:

Families: 5 | Genera: 5

Geographic Distribution

Keys

• HodgsoWi2016: pp.137-138 ( Adult (F) ) [Adult females of Asterococcus species]
• Wang2001: pp.506 ( ) [Key to Chinese species of Asterococcus]
• TangHa1995: pp.216 ( Adult (F) ) [Species of Asterococcus]
• Wang1994: pp.241 ( Adult (F) ) [China]
• Lambdi1983: pp.307 ( Adult (F) ) [Species of Asterococcus]
• Borchs1960d: pp.115 ( Adult (F) ) [Asterococcus species of the USSR]

Remarks

• Systematics: This species is near A. schimae and can be differentiated from it by the absence of paired glands among the disk glands that form the spiracular furrow, the presence of triple paired glands and also the broad sclerotized rim of the paired glands (Borchsenius, 1960d).
• Structure: Adult female is short and pear shaped. Covering of female is more or less conical, yellowish brown, with white narrow radial bands. First stage larva is elongate egg shaped, narrowed to the posterior end (Borchsenius, 1960d). The main character-states diagnosing the adult female of A. yunnanensis are: (i) anteroventral sclerotizations on anal lobes absent; (ii) anal lobes sclerotized throughout; (iii) four spinose setae present on inner margin of each anal lobe; (iv) multilocular disc-pores present on abdominal segments II–VIII and on metathorax, with a complete band on segment VII; (v) dorsum with two sizes of tubular ducts, narrower ducts medially on head and thorax and broader ducts restricted to abdominal segments anterior to anal plate; (vi) tubular ducts very sparse or even absent medially on venter; (vii) cribriform plates absent; (viii) leg stubs small; (ix) small 8-shaped pores present sparsely on dorsum; (x) 8-shaped pores with three closed pores (“trilocular”) present associated with most stigmatic pore bands, and (xi) transverse bands of dorsal 8-shaped pores present on about abdominal segments III, IV and VII. This species is possibly closest to A. scleroglutaeus. (Hodgson & Williams, 2016)
• Biology: The scale insect has 1 generation a year and overwintered in the egg stage from January to April. Larvae appeared from early April to late May, and adults from June to November. Oviposition took place from early December to January. The most susceptible stage for control measures was the young larva (Plant Protection Group, 1982).
• General Remarks: Detailed description and illustration by Borchsenius (1960d). First instar illustration and description provided in Chinese (PPGCAB1982).

Illustrations

Citations