A revision of the chigger genus Afrotrombicula (Acariformes: Trombiculidae) Author Stekolnikov, Alexandr A. text Zootaxa 2023 2023-07-31 5323 1 27 55 http://dx.doi.org/10.11646/zootaxa.5323.1.2 journal article 59754 10.11646/zootaxa.5323.1.2 213d0fa5-4e42-4ef6-8f7b-2b9ab37ebb70 1175-5326 8203863 69FB16D4-9691-4D4D-9DEC-704BA325E07D Key to species of Afrotrombicula (larvae) 1. AM absent; 20 dorsal idiosomal setae (fD = 2H-6-6-6); NDV = 43–48.............................. A. quadriscutala - AM present; more than 25 dorsal idiosomal setae; NDV> 65.................................................. 2 2. Mastitarsala absent.................................................................................... 3 - Mastitarsala present................................................................................... 6 3. AW> 70; PW ca. 80; SD> 65..................................................................... A. sciuri - AW <60; PW <70; SD <60 ............................................................................ 4 4. PW ca. 55; PSB ca. 21–25; SD <50.............................................................. A. nyongae - PW> 60; PSB ca. 28–34; SD> 50........................................................................ 5 5. Ip = 838–842; f 1 distal to S 1 ...................................................................... A. liberia - Ip> 900; f 1 proximal to S 1 .................................................................... A. machadoi 6. NDV> 95........................................................................................... 7 - NDV <85........................................................................................... 8 7. Ip = 1066–1147; TaIIIL = 103–109; f 1 at level of S 1 ; f 2 at level of S 2 ; PL = 98; H = 77–91; D min = 48–50; D max = 73–75.................................................................................................. A. nicolei - Ip = 908–963; TaIIIL = 83–89; f 1 distal to S 1 ; f 2 behind S 2 ; PL = 67–77; H = 60–69; D min = 34–38; D max = 55–66.................................................................................................... A. nigeriensis 8. PL = 49–57; H = 46–51; D max = 42–49..................................................................... 9 - PL = 66–75; H = 61–64; D max = 55–61.................................................................... 10 9. S 1 = 14–15 (not reaching base of subterminala); f 1 distal to S 1 ....................................... A. rickenbachi - S 1 = 21 (overpass base of subterminala); f 1 at level of S 1............................................... A. vanbreei 10. Eight setae in 2 nd posthumeral row (fD = 2H-6-8-…); NDV = 78–84; posterior scutal margin arquate (pentagonal scutum); PW/SD = 1.48–1.50; TaIIIL = 74–78................................................. A. claviglia + A. kenyaensis - Six setae in 2 nd posthumeral row (fD = 2H-6-6-…); NDV = 68–76; posterior scutal margin straight or slightly concave in center and obliquely cut at edges (hexagonal scutum); PW/SD = 1.23–1.35; TaIIIL = 83–89............................... 11 11. Lateral palpal tibial seta with branch (fPp = B/B/NbB); f 1 distal to S 1 ................................... A. gabonica - Lateral palpal tibial seta nude (fPp = B/B/NNB); f 1 at level of S 1 ....................... A. zairiensis + A. centrafricana