Exothorhis Summers, 1960

Khan, Eid Muhammad, Kamran, Muhammad, Rehman, Muneeb Ur, Mirza, Jawwad Hassan & Alatawi, Fahad Jaber, 2024, Two new species of Eupalopsellidae (Acari: Prostigmata: Raphignathoidea) and key to the world species of Exothorhis Summers, Journal of Natural History 58 (13 - 16), pp. 511-526 : 524-525

Key to species of Exothorhis Summers

1. Palp tarsus with solenidion .............................................................................................................. 2

- Palp tarsus without solenidion ............................................ E. sudanicus Zaher and Yousaf

2. Palp tibial claw present ..................................................................................................................... 3

- Palp tibial claw absent .................................................................................. E. armata Summers 3. Dorsum of idiosoma covered by two/three shields .............................................................. 4

- Dorsum of idiosoma covered by more than three shields ................................................. 7

4. Dorsal body setae mostly spatulate ............................................................................................. 5

- Dorsal body setae mostly tapering .............................................................................................. 6

5. Genu and femur I–IV 1–1–1–1 and 5(1) – 4(1) – 4(1) – 4(1), respectively ........................... .......................................................................................... E. damortis Rimando and Corpuz-Raros

- Genu and femur I–IV (2(1)–1(1)–1(1)–1(1)) and (5(2)–5(2)–5(1)–5(1)), respectively ......... .................................................................................................................................. E. okinawana Ehara

6. Idiosoma covered by two shields ........................................................ E. echinocactii Gerson

- Idiosoma covered by three shields ........................ E. camelliae Meyer and Ueckermann

7. Dorsal setae mostly spatulate ......................................................................................................... 8

- Dorsal setae mostly tapering ........................................................................................................ 11

8. Postocular body present ................................................................................................................... 9

- Postocular body absent ........................ ........................ E. lenis Rimando and Corpuz-Raros

9. Tarsus III with solenidion ................................................................................................................ 10

- Tarsus III without solenidion ................................. E. mirus (Chaudhri, Akbar and Rasool)

10. Dorsal shield smooth, coxa III without setae ..................... ...................... E. kenyae Bolland

- Dorsal shield punctate, coxa III with one seta E. saudiensis sp. n. Alatawi and Kamran

11. Tibia I with small spine like solenidion distally ..................................................................... 12

- Tibia I without small spine like solenidion distally. E. phoenix i Meyer and Ueckermann

12. Tibia I with 5(1) setae ....................................................................................................................... 13

- Tibia I with 4(1) setae .................................................................... E. jinganensis Hu and Chen

13. Tarsi I–II with 9(1)–8(1) setae .................................................................... E. caudate Summers

- Tarsi I–II with 8(1)–7(1) setae ................ ................. E. matulis Rimando and Corpuz-Raros