The Chinese species of the mealybug genus Neotrionymus Borchsenius (Hemiptera: Coccoidea: Pseudococcidae) Author Xu, Shujing Author San Author Wu, an text Zoological Systematics 2018 2018-01-31 43 1 52 57 http://zoobank.org/126e1f17-cd75-4708-80c3-5114425098ab journal article 5449 10.11865/zs.201805 41c0f8e6-def5-49ad-a3ed-0b32df5c824d 2095-6827 4617056 126E1F17-CD75-4708-80C3-5114425098AB Neotrionymus Borchsenius, 1948 Neotrionymus Borchsenius, 1948: 581 ; 1949: 182; Ter-Grigorian, 1973: 75; Danzig, 1980: 189; 1998: 156. Type species: Neotrionymus monstatus Borchsenius, 1948 , by original designation. Key to species of genus Neotrionymus in China . 1. Circuli numbering 3–4. Sparse trilocular pores present on all body surface ............................................... N. monstatus Воrchsenius Circuli numbering 1–2. Trilocular pores absent or present only on derm near spiracles, on lips of ostioles and in cerarii ..................2 2. With 2 circuli ........................................................................................................................................... N. cynodontis (Kiritshenko) With only one circulus .........................................................................................................................................................................3 3. Oral collar tubular ducts of 2 sizes, with collar occupying more than half of total length of duct. Two pairs of cerarii, each cerarius containing 5–10 trilocular pores........................................................................................................... N. yunnanensis (Воrchsenius) Oral collar tubular ducts of 1 size, with collar occupying no more than half of total length of duct. One pair of cerarius, each cerarius containing trilocular pores no more than 5........................................................................................................................................... 4 4. Circulus very large, longer than width, quadrate or hour-glass shaped. Trilocular pores present near spiracles, on lips of ostioles and sometimes in cerarii. Anal ring with 2 or 3 rows of cells ..................................................................................... N. chinensis sp. nov. Circulus small, quadrate. Trilocular pores entirely absent. Anal ring simple, with reduced numbers of cells........................................ .......................................................................................................................................................... N. guandunensis (Воrchsenius)