Valid Names Results

Neogreenia osmanthus (Yang & Hu, 1994) (Qinococcidae: Neogreenia)

Nomenclatural History

• Kuwania osmanthus Yang & Hu 1994: 29. Type data: CHINA: Guangxi Zhuang Autonomous Region, Guilin City, on Osmanthus fragrans; collected by Yang and Hu, 31 May 1963.. Holotype, female, Type depository: Beijing: Institute of Entomology, Academy of Sciences, China; accepted valid name Illustr.
• Neogreenia osmanthus (Yang & Hu, 1994); Wu & Cheng 2006: 64. change of combination

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 2

Foes:

Families: 2 | Genera: 2

Geographic Distribution

Keys

• ZhengWaZh2024: pp.439 ( Adult (F) ) [species of Neogreenia]
• ZhengWaZh2024: pp.439 ( First instar Second instar (F) Third instar (F) ) [Chinese Neogreenia]
• ZhengWu2023: pp.117-118 ( Adult (F) Adult (M) Life Stages ) [Neogreenia osmanthus]
• WuNa2012: pp.53 ( Adult (F) ) [Key to species of genus Neogreenia MacGillivray based on adult female morphology]
• WuCh2006: pp.94 ( Adult (F) ) [Species of Neogreenia]

Remarks

• Systematics: The 13 studied adult females studied by Zheng & Wu (2023) could be divided into two groups: Group I (n=8) each with a large body about 4.10–6.99 mm long and 1.80–3.04 mm wide and mouthparts without stylets; and Group II (n=5) each with a smaller body, about 1.27–6.00 mm long and 1.27–2.0 mm wide, with stylets atrophied or developed. They collected these specimens from similar positions (from under the bark or crawling on the bark) on separate host plants at different times; in each sample, the two morphotypes were co-mingled. The two Groups were very similar except for the presence or absence of the stylets and their dimensions. The adult female in this study differed from the original description by Yang & Hu (1994) in having: (i) the posteriormost 2 pairs of abdominal spiracles (out of a total of 8) much smaller than the anteriormost 6 (this was not mentioned in the original description, when the small spiracles may have been overlooked or lost during cleaning of the specimen); (ii) two small circular cicatrices present (not mentioned in the original description); and (iii) multilocular disc pores of two sizes, large and small, with the large pores confined to areas around the spiracles (in the original description no distinction was made between large and small multilocular disc pores).
• Structure: Body very elongate oval, with dorsum convex and venter flat; head slightly tapered anteriorly; abdomen broad, with segmentation distinct; derm membranous, yellowish to orange; eyes black; antennae and legs yellowish-brown and well developed; intersegmental folds scantily encrusted in mealy white wax; antennae situated on apex of head, with only a small space between their bases. (Zheng & Wu, 2023) Adult male body cylindrical, about 1.5 mm long, wing-span about 4.0 mm. Membranous parts of body yellowish, sclerotized parts grey brown. Wings large and broad, smoky with grey-brown costal complex and a yellow pterostigma
• Biology: Neogreenia osmanthus has one generation a year in Guiyang city, Guizhou province, P. R. China. Development of the female involves three immature instars before the adult stage, whereas the male has four immature instars before the winged adult. Adult females are present from April to June; the newly hatched first-instar nymphs appear in May, and the apodous, feeding second- and third-instars (cyst) nymphs appear from July and can be observed until May of the following year. Males are rare, representing a very low percentage of the population. In more than 500 individuals, only 4 pupae or third-instar male nymphs were found. The adult males appear in May. The feeding stages live under the bark. No honeydew deposits were observed. The adult females walk upwards on the bark before oviposition and lay more than a hundred eggs in a white loose ovisac in a crevice in the bark (Zheng & Wu, 2023)
• General Remarks: Description and illustration of adult female by Yang & Hu (1994). Redescription and reillustrations of male and female nymphs and adults in Zheng & Wu (2023).

Illustrations

Citations