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