Pseudaulacaspis, MacGillivray, 1921

Suh, Soo-Jung, 2015, New records of armored scale insects, Pseudaulacaspis MacGillivray (Hemiptera: Diaspididae), in Korea, Insecta Mundi 2015 (403), pp. 1-8 : 6

Key to species of Pseudaulacaspis from Korea

(slide mounted adult female)

1. Body oval or turbinate, length usually less than 1.5 times greatest width ............................... 2

— Body elongate, length usually 1.5 times or more than greatest width ...................................... 3

2(1). Third space usually with 1 gland spine; at least 1 bifurcate or trifurcate gland spine in second, third, or fourth space; antennae sclerotized projections apically; with 5–22 (10) small macroducts on each side of the metathorax and segment 1 ...................................................... ............................................................... Pseudaulacaspis pentagona (Targioni-Tozzetti)

— Third space usually with 2 or more gland spines; simple gland spine in second, third, or fourth space; antennae rounded apically; with 0–15 (5) small macroducts on each side of the metathorax and segment 1 (on usually Prunus ) ... Pseudaulacaspis prunicola (Maskell)

3(1). With perispiracular pores near posterior spiracles ..................................................................... 4

— Without perispiracular pores near posterior spiracles ............................................................... 5

4(3). With usually two rows of submarginal macroducts on abdominal segments 2 and 3; with 4–11 pores near anterior spiracles and 1–5 pores near posterior spiracles (found on Zelkova and Ulmus ) ............................................................................... Pseudaulacaspis ulmicola Tang

— With one row of submarginal macroducts on abdominal segments 2 and 3; with 13–27 pores near anterior spiracles and 6–10 pores near posterior spiracles (only found on Carpinus ) .... .................................................................. Pseudaulacaspis latiloba (Takagi and Kawai)

5(3). Without a duct on abdominal segment 6; antennae usually widely apart, width between antennae wider than that between median lobes (only found on Quercus ) .............................................. ............................................................................ Pseudaulacaspis kiushiuensis (Kuwana)

— With duct on abdominal segment 6; antennae usually close together, width between antennae narrower than that between median lobes (on many hosts) ..................................................... .................................................................................... Pseudaulacaspis cockerelli (Cooley)