Scymnus (Neopullus)

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), The Coleopterists Bulletin 54 (2), pp. 154-199 : 160-161

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