Corresponding author: Jiang-Tao Zhang (
Academic editor: G. Goemans
A new mealybug species
Zhang J-T, Zhou J-Y, Pan Y-L, Liu X-P (2020) A new
The genus
In China,
In this study, a new species,
All mealybug specimens were collected from under the leaf sheaths and transferred into 75% alcohol, then prepared and mounted mainly according to the method of
All specimens examined are deposited in the College of Forestry, Jiangxi Agricultural University, Jiangxi, China.
Body in life usually greenish or white, females of some species show black coloration after being placed in ethanol or potash. Body of adult female on slide oval to elongate oval. Antennae seven- or eight- segmented. Circulus present or absent. Legs well developed, claw without a denticle. Both pairs of ostioles well developed. Anal ring usually situated at apex of abdomen, bearing six setae. Anal lobes moderately developed, each bearing a normal apical seta. Cerarii numbering 1–17 pairs, each cerarius usually bearing two conical setae. Trilocular pores numerous, evenly scattered on all body surface. Multilocular disc pores usually present on venter, more rarely present on dorsum. Oral rim ducts present, forming transverse rows on dorsum and sometimes present on venter. Oral collar tubular ducts present, at least on venter, sometimes present on dorsum. Most species have group of oral collar tubular ducts on prothorax in front of anterior spiracles, often accompanied by a group of multilocular disc pores. Flagellate setae of different sizes present on both body surfaces (adapted from
The species name is based on the collection locality, Rushui Forest Park.
Alive: body elongate, dark reddish, with thin covering of white mealy wax, and only caudal filaments present (Fig.
Habitus photograph of
Slide-mounted specimens (
Adult female of
China: Jiangxi (Fuzhou).
Living under the leaf sheath of its host plant.
The new species also resembles
In
1 | Multilocular disc pores present on venter and dorsum |
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– | Multilocular disc pores present on venter only |
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2 | Dorsal tubular ducts absent or present in compact groups along abdominal margin only |
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– | Dorsal tubular ducts present and forming transverse rows |
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3 | Cerarii present in 3–7 pairs |
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– | Only one pair of cerarii present |
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4 | Cerarii 6–7 pairs, dorsal multilocular disc pores on margins only of posterior abdominal segments |
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– | Cerarii 3–4 pairs, noticeable groups of multilocular disc pores in submedian areas of dorsum |
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5 | Circuli present |
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– | Circuli absent |
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6 | Oral rim duct present on venter and dorsum |
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– | Oral rim duct present on dorsum only |
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7 | Circuli 2–5 in number |
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– | One circulus present |
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8 | Prothoracic group of tubular ducts absent |
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– | Prothoracic group of tubular ducts present |
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9 | Translucent pores normal, also extend to metathorax cuticle near hind coxae |
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– | Translucent pores duct-like, only present on the cuticle of hind coxae |
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The project was supported by the Youth Science Foundation of Jiangxi Provincial Department of Education, China (GJJ180221).