Typlodromus transvaalensis (Nesbitt, 1951)

Mirza, Jawwad Hassan, Kamran, Muhammad & Alatawi, Fahad Jaber, 2024, New species and new records of the family Phytoseiidae Berlese (Acari: Mesostigmata) from Saudi Arabia, Zootaxa 5496 (4), pp. 567-578 : 576

Key to transvaalensis species group of the genus Typhlodromus (Anthoseius)

1. All or most of the dorsal setae serrate..................................................................... 2

- Dorsal setae smooth except for setae Z4 and Z5 finely serrate.................................................. 8

2. Peritremes reaching up to the bases of j1 .................................................................. 3

- Peritremes reaching between the bases of j3 and z2 or extending to j3 ........................................... 4

3. Setae st3 present on the sternal shield, macrosetae pointed distally.... T. (A.) serratosus El-Halawany & Abdel-Samad 1990

- Setae st3 present on platelets, macrosetae bifurcated distally................................... T. (A.) xini Wu 1983

4. Seta r3 on the dorsal shield, sternal and genital shields smooth....................... T. (A.) hartlandrowei Evans 1958

- Seta r3 off the dorsal shield............................................................................. 5

5. Dorsal setae long, setae j3, j4, j5, j6, J2, and Z4 reaching past the bases of setae next in line, sternal and genital shields reticulated......................... T. (A.) neohartlandrowei Zannou, Moraes & Oliveira , in Ueckermann et al., 2008

- Dorsal setae comparatively short; j3, j4, j5, j6, J2, and Z4 not reaching the bases of setae next in line or reaching near the bases of next consecutive setae sternal and genital shields smooth................................................... 6

6. All dorsal shield setae and all macrosetae on legs knobbed distally................. T. (A.) transvaalensis ( Nesbitt 1951)

- All dorsal shield setae pointed distally and macrosetae on only leg IV knobbed.................................... 7

7. Dorsal setae j3, j4, j6, and J2 long reaching to the bases of setae next in line; all macrosetae on leg IV knobbed, ventrianal shield pentagonal, with concave lateral margins...................................... T. (A.) foraminosus ( Schuster 1966)

- Dorsal setae j3, j4, j6, and J2 far behind the bases of setae next in line; only macrosetae on basitarsus IV knobbed, ventrianal shield almost oval in shape with rounded lateral margins............... T. (A.) diumbokus Schicha & Corpuz-Raros 1992

8. Sternal shield with two pairs of setae; st3 on small platelets................................................... 9

- Sternal shield with three pairs of setae................................................................... 10

9. Peritremes reaching between the bases of setae z4 and s4; dorsal setae j4, j6 and J2 far behind the bases of next consecutive setae, ventrianal shield pentagonal, distinctly longer than wide......................................................................................... T. (A.) rodriguezi ( Denmark & Daneshvar, in Daneshvar & Denmark 1982)

- Peritremes reaching near the bases of setae j3; dorsal setae j4, j6 and J2 reaching the bases of next consecutive setae, ventrianal shield triangular, length and width almost subequal................................... T. (A.) bambusae Ehara 1964

10. Peritremes reaching between the bases of setae z4 and s4......................... T. (A.) xinjiangensis Wu & Li 1987

- Peritremes reaching up to the level of j1 or j3 bases......................................................... 11

11. Peritremes reaching up to the level of j1 bases; macrosetae on leg IV simple with pointed tips, StIV 31............................................................................ T. (A.) teramon ( Shahid, Siddiqui & Chaudhri 1983)

- Peritremes reaching up to the level of j3 bases; macrosetae on leg IV knobbed, StIV 48.... T. (A.) youxiensis Ma & Lin 2007