关键词: 同翅目, 珠蚧科, 长珠蚧属, 新种, 槐树, 中国

Abstract:

A new species, Neogreenia sophorica Wu, collected from Beijing inside bark tissue of Sophora japonica is described and illustrated with its adult female, egg, 1^st and 2^nd instar nymph. The new species can be easily distinguished from other species in genus Neogreenia by claw with 2 minute denticles. A new combination is constructed for Kuwania osmanthus, transferring from genus Kuwania to genus Neogreenia. A key to the world species of genus Neogreenia is also given. All type specimens are deposited in the Insect Collections of Department of Forestry Protection, Beijing Forestry University. Adult female:body elongate with marked segmentation, orange yellowish in colour, 3.75～6.05 mm long and 1.70～2.75 mm wide. Antennae ten-segmented. Mouthpart developed. Leg in 3 pair, at apex of tibia with a tuft of 5～8 digitules acute in form,tarsus bowed distinctly, claw with 2 denticles and 1 pair of acute digitules. Thoracic spiracles each with a group of multilocular pores at inner end of atrium; abdominal spiracles in 6 pairs, all smaller than the thoracic ones, with small amount of multilocular pores within its atrium. Derm bearing 2 types of disc pores: the one being multilocular pore, the other simple disc pore. First instar nymph: body elongate, yellowish in colour, about 0.76 mm long and 0.27 mm wide. Antennae seven-segmented. Mouthpart and legs much developed, claw with 1 denticle at its plantar surface. Abdominal spiracles only 1 pair. Abdominal sternite Ⅵand Ⅶ each with a circulus. Second instar nymph(cyst): body oval, about 3.8 mm long and 2.0 mm wide. Antennae reduced. Legs entirely absent. Abdominal spiracles in 5pairs. Holotype: 1 adult female, Dongcheng District, Beijing; inside bark tissue of Sophora japonica, May 3, 2004; Coll. Cheng Guifang. Paratypes: 10 adult females, 8 1^st instar nymphs and 7 2^nd instar nymphs, from April 24 to May 3, 2004; other data as holotype.

Key words: Homoptera, Margarodidae, Neogreenia, new species, Sophora japonica, China