Stigmaeopsis, Banks, 1917

Saito, Yutaka, Sato, Yukie, Kongchuensin, Manita & Sahara, Ken, 2019, New Stigmaeopsis species on Miscanthus grasses in Taiwan and Thailand (Acari, Tetranychidae), Systematic & Applied Acarology 24 (4), pp. 675-682 : 680-681

Due to the addition of two new species, the key to the Stigmaeopsis species (for adult female) in Saito et al. (2 0 1 8) should be changed as follows:

1. Length of setae d 1 shorter than (or similar to) distance between bases of d 1 setae members.......... 2

- Length of setae d 1 longer than distance between bases of d 1 setae............................... 9

2. Length of setae d 1 shorter than (or similar to) distance between bases of d 1 and e 1 setae............ 3

- Length of setae d 1 longer than distance between bases of d 1 and e 1 setae......................... 5

3. Length of setae d 2 longer than distance between bases of d 1 and d 2 setae............................................................................... Stigmaeopsis tegmentalis Saito & Lin

- Length of seta d 2 shorter than distance between bases of d 1 and d 2 setae......................... 4

4. Length of setae e 1 similar to distance between bases of e 1 and f 1 setae................................................................................... Stigmaeopsis saharai Saito & Mori

- Length of setae e 1 much longer than distance between bases of e 1 and f 1 setae............................................................................ Stigmaeopsis temporalis Saito & Ito

5. Length of seta e 1 similar to distance between bases of e 1 and e 2 setae.................................................................................. Stigmaeopsis takahashii Saito & Mori

- Length of seta e 1 longer than distance between bases of e 1 and e 2 setae.......................... 6

6. Length of setae d 1 similar to distance between bases of d 1 and f 1 setae.......................... 7

- Length of setae d 1 shorter than distance between bases of d 1 and f 1 setae......................... 8

7. Length of c 1 much shorter than the distance between the bases of c 1 and c 3 setae................................................................ Stigmaeopsis formosa * Saito, Sato & Chao , n. sp.

- Length of c 1 is almost the same as the distance between the bases of c 1 and c 3 setae....................................................................... Stigmaeopsis sabelisi * Saito & Sato

8. Length of seta d 1 shorter than distance between bases of d 1 and e 2 setae............................................................................ Stigmaeopsis tenuinidus (Zhang & Zhang)

- Length of setae d 1 longer than distance between bases of d 1 and e 2 setae............................................................................... Stigmaeopsis malkovskii * (Wainstein)

9. Distance between bases of e 1 setae similar to that between bases of d 1 setae........................................................................... Stigmaeopsis nanjingensis (Ma & Yuan)

- Distance between bases of e 1 setae shorter than that between bases of d 1 setae.................... 10

10. Length of setae d 1 shorter than (or similar to) distance between bases of d 1 and f 2 setae............ 11

- Length of setae d 1 longer than distance between bases of d 1 and f 2 setae........................ 13

11. Distance between bases of c 2 setae similar to that between bases of d 2 setae..................... 12

- Distance between bases of c 2 longer than that between bases of d 2 setae..................................................................................... Stigmaeopsis miscanthi *(Saito)

12. Length of setae d 2 shorter than (or similar to) distance between bases of d 1 and d 2 setae.......................................................................... Stigmaeopsis celarius Banks

- Length of setae d 2 longer than distance between bases of d 1 and d 2 setae............................................................................. Stigmaeopsis continentalis * Saito & Lin

13. Mediodorsal striae (central part of quadrilateral forming c 1 and d 1 setae bases) transverse........................................................... Stigmaeopsis meghalayensis (Gupta & Gupta)

- Mediodorsal striae (central part of quadrilateral forming c 1 and d 1 setae bases) longitudinal........ 14

14. Distance between bases of c 2 longer than that between bases of d 2 setae.... Stigmaeopsis longus (Saito)

- Distance between bases of c 2 almost the same as that between bases of d 2 setae..................................................... Stigmaeopsis inthanonsis* Saito, Kongchuensin & Sahara , n. sp.

Thus 15 species are now involved in the genus, Stigmaeopsis . The species marked with asterisks inhabit Miscanthus grasses and reedgrass ( Poaceae ), whereas all others inhabit Bambusoideae (Poaceae) plants.