Scymnus (Neopullus)
Creators: name: Yu, Guoyue
name: Montgomery, Michael E.
name: Yao, Defu
Publisher: name: Zenodo
Year: 2000
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Scymnus

description: Key to Species of Scymnus (Neopullus) of China   
1 Pronotum brown without any dark or black markings -------------------------------- 2  
1′ Pronotum black with antero­lateral corners brown, or pronotum brown with dark basal marking ------------------------------------------------------------------------------------------ 4  
 2 Elytra brown with slightly darker suture or lateral sides; area enclosed by postcoxal line densely and uniformly punctate; body length 1.9–2.2 mm ----------------------------------------------------------------------------------------------------- S. fuscatus Boheman   
 2′ Elytra black with apex brown, or elytra brown with yellow spots; area enclosed by postcoxal line irregularly punctate --------------------------------------------- 3   
 3 Elytra brown with one or two pair of yellow spots; only narrow margin along postcoxal line smooth; body length 1.7–1.8 mm --------------------------------- --------------------------------------------------------------------------------- S. lijiangensis Yu, new species   
 3′ Elytra black with apical 1/7 brown, without spots; posterior half of area enclosed by postcoxal line smooth; body length 1.8–1.9 mm -------------------- ----------------------------------------------------------------------------------------- S. minisculus Yu and Pang   
4 Elytra entirely brown ------------------------------------------------------------------------------------------------ 5  
4′ Elytra brown with black areas ------------------------------------------------------------------------------ 6  
 5 Elytral pubescence arranged in S­form; area enclosed by postcoxal line uniformly punctate; body length 2.0– 2.5 mm -------------- S. yamato Kamiya   
 5′ Elytral pubescence directed externally and not S­form; area enclosed by postcoxal line irregularly punctate; body length 2.2–2.3 mm --------------------- ----------------------------------------------------------------------------------- S. lycotropus Yu, new species   
6 Elytron black with only apex brown ------------------------------------------------------------------ 7  
 6′ Elytron dark brown with black base, lateral side, and suture ------------------ 8   
 7 Body sides slightly arcuate; area surrounded by postcoxal line uniformly punctate; body length 2.0– 2.4 mm ------------------------------------------ S. babai Sasaji   
 7′ Body sides moderately arcuate; area surrounded by postcoxal line irregularly punctate; body length 1.7–1.9 mm ------------------------------------------------------------ ------------------------------------------------------------------------------------ S. thecacontus Ren and Pang   
8 Elytron with a black spot, sometimes connected to the black lateral edge -------------------------------------------------------------------------------------------------------------------------------------------- 9  
8′ Elytron without black spot ----------------------------------------------------------------------------------- 10  
 9 Pronotum black with lateral and narrow anterior margins brown in both sexes; black suture extending to 5/6 elytral length; body length 1.7–2.0 mm ------------------------------------------------- S. ningshanensis Yu and Yao, new species   
 9′ Pronotum black with lateral and narrow anterior margins brown in female, in male pronotum brown with large black marking at base; black suture 1/2 elytral length at most; body length 1.9–2.1 mm -------------------------------------- -------------------------------------------------------------------------------------- S. sinuanodulus Yu and Yao   
10 Area surrounded by postcoxal line uniformly punctate ---------------------------- 11  
 10′ Area surrounded by postcoxal line irregularly punctate --------------------------- 12   
 11 Pronotum almost entirely black; elytra brown with suture and lateral sides dark brown or black; body length 2.0– 2.5 mm ----------- S. yamato Kamiya   
 11′ Pronotum brown with black basal marking, if pronotum almost entirely black, then elytral base black; body length 1.7–2.1 mm ------------------------------- -------------------------------------------------------------------------------------------------------- S. hoffmanni Weise   
 12 Black extending along suture to 1/3 elytral length at most; body length 1.9–2.2 mm ---------------------------------------------------------- S. camptodromus Yu and Liu   
12′ Black or dark brown extending along suture from 1/2 to 2/3 elytral length ------------------------------------------------------------------------------------------------------------------------------------------ 13  
 13 Body sides distinctly arcuate; median piece of tegmen with parallel sides in ventral aspect; body length 1.8–2.0 mm ----- S. paralleus Yu and Pang   
 13′ Body sides weakly arcuate; median piece of tegmen boat­shaped in ventral aspect; body length 2.0 mm ------ S. nigromarginalis Yu, new species
description: Published as part of Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), pp. 154-199 in The Coleopterists Bulletin 54 (2) on pages 160-161, DOI: 10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;2