Balanococcus kwoni Pellizzari & Danzig

Li, Wen-Chao & Wu, San-An, 2014, A new species and a new record of the genus Balanococcus Williams (Hemiptera: Coccoidea: Pseudococcidae) from China, Zoological Systematics 39 (2), pp. 269-274 : 272-274

3.2 Balanococcus kwoni Pellizzari & Danzig New record to China ( Fig. 2 )

Balanococcus bambusum (nec Tang, 1992); Kwon, Danzig & Park, 2003: 398 (misidentification).

Balanococcus kwoni Pellizari & Danzig, 2007: 65 ; Malumphy & Badmin, 2012: 18, 38.

Body of adult female on slide elongate oval, sides sub-parallel, about 3.8–4.3 mm long and 1.4–1.8 mm wide. Anal lobes barely perceptible, each with ventral surface bearing an apical seta 125–150 μm long. Antennae each about 280–310 μm long, with 7 segments, apical segment longest, lateral margin with 3 fleshy setae. Legs small and slender, 2 setae present under end of tibia. Hind coxa 60–130 μm long, hind trochanter and femur 190–240 μm long, hind tibia and tarsus 210–240 μm long. Claw without denticle, 15–20 μm long, tarsal digitules 30–40 μm long, claw digitules 80–100μm long, both tarsal digitules and claw digitules knobbed, all longer than claw. Ratio of lengths of hind tibia and tarsus to hind trochanter and femur 1.0. Ratio of lengths of hind tibia to tarsus 2.0. Hind coxa slightly inflated, translucent pores present on lateral surfaces. Eye spot present. Labium with 2 segments, 95–120 μm long, 1/2 of the length of clypeolabral shield. Circulus small and rectangle, 60–80 μm wide, lying between abdominal segments III and IV. Spiracles cylinder-shaped, with associated trilocular pores. Ostioles poorly developed, with anterior and posterior pairs, each lip with 3–5 trilocular pores. Anal ring present at the end of dorsum, 70–80 μm wide, with 2 rows of cells and 6 seta, each setae 90–160μm long, ratio of length of seta on anal ring to the diameter of anal ring 1.3–2.1. Cerarius on anal lobes only, each containing 2 conical setae and 6–8 trilocular pores, In addition, 0–2 conical setae present on marginal area of abdominal segment VII, but without trilocular pores around those conical setae, all situated on a membranous area.

Dorsum. Flagellate setae stout, more on head. Multilocular disc pores present in one or two rows on posterior abdominal segment V–VII, and form narrow longitudinal band around margin. Trilocular pores evenly distributed. Oral collar tubular ducts of 2 sizes, both with deep collars, the large one 6.0 μm long, 3.5 μm wide, the small one 4.5 μm long and 2.0 μm wide, more numerous on margin of last abdominal segments, but sometimes absent from abdominal segment VIII, rare on margin of thorax.

Ventrum. Ventral flagellate setae present, sparse, slender, longer on posterior abdominal segments, more on head and around vulva. Multilocular disc pores present in transverse row on abdominal segments V–VI, in transverse band on segments VII–IX, and form longitudinal band around margin. Trilocular pores evenly distributed. Oral collar tubular ducts, similar in size to those on dorsum, more numerous on last abdominal segments, distributed among multilocular disc pores, present also on margin of head and thorax and few present in medial part of abdominal segments.

Host plants. Bambusa sp. , B. vivax , Fargesia sp. , Indocalamus longiauritus , In.tessellatus , Pharus sp. , Phyllostachys sp. , Ph.bambusoides , Ph.praecox , Ph.nigra , Pleioblastus sp. , Pl.linearis , Pl.variegatus , Pseudosasa japonica , Sinarundinaria nitida , Thamnocalamus crassinodus (Poaceae) .

Distribution. China (Hubei, Zhejiang); South Korea, Italy, United Kingdom.

Material examined. 7♀♀, Hubei Province, Xianfeng County, Pingbaying Forest Field, under leaf sheath of Indocalamus longiauritus , 21–22 July 1999, San-An Wu leg. ; 5♀♀, Hubei Province, Wufeng County, Houhe Nature Reserve , under leaf sheath of bamboo, 11–12 July 1999, San-An Wu leg. ; 1♀, Hubei Province, Hefeng County, Shayuan , under leaf sheath of bamboo, 18 July 1999, San-An Wu leg. ; 1♀, China, Zhejiang Province, Hangzhou City , on Phyllostachys praecox , 17 August 2003, San-An Wu leg. ; 1♀, Zhejiang Province, Lin’an City , under leaf sheath of Indocalamus tessellatus , 6 August 2008, Jin Liu leg.

© Zoological Systematics, 39(2): 269–274

© Zoological Systematics, 39(2): 269–274 Funding This research was supported by the National Natural Science Foundation of China (30171949).

Acknowledgements We are grateful to Prof. Giuseppina Pellizzari ( Dipartimento Agronomia Ambientale e Produzioni Vegetali-Entomologia , Università di Padova, Viale dell’Università, Italy) for loading some paratypes of Balanococcus kwoni Pellizzari & Danzig .

Figures

Fig. 2. Adult female of Balanococcus kwoni Pellizzari & Danzig, 2007. A. Antenna. B. Trilocular pore. C. Spiracle. D. Hind leg. E. Tarsus and claw of hind leg. F. Small size of oral collar tubular duct. G. Large szie of oral collar tubular duct. H. Multilocular disc pores. I. Cerarius on anal lobe. J. Dorsal flagellate seta. K. Ventral flagellate seta.