Life stages and phylogenetic position of the wool carder bee mite Sennertionyx manicati (Acari: Acaridae) Author Fan, Qing-Hai 0000-0001-6840-2469 qinghai. fan @ mpi. govt. nz, https: // orcid. org / 0000 - 0001 - 6840 - 2469 Author Li, Dongmei 0000-0002-0509-3221 Dongmei. Li @ mpi. govt. nz, https: // orcid. org / 0000 - 0002 - 0509 - 3221 Author George, Sherly 0000-0003-1305-4860 Sherly. George @ mpi. govt. nz, https: // orcid. org / 0000 - 0003 - 1305 - 4860 text Zootaxa 2020 2020-09-28 4857 1 160 195 journal article 9062 10.11646/zootaxa.4857.1.9 b48ba57b-dc6c-465b-b9f8-533dec54c52a 1175-5326 4396657 75043663-E121-4CFB-BE93-8BCAD5F3BD92 Key to stages of Sennertionyx manicati ( Giard, 1900 ) 1. With 4 pairs of legs; Claparède organs absent; genital opening and papillae present (1 or 2 pairs); hysterosoma with 12 pairs of setae ( f 2 and h 3 present)................................................................................. 2 –. With 3 pairs of legs; a pair of Claparède organs ( Fig. 21B ) present; no genital opening or papillae; hysterosoma with 10 pairs of setae ( f 2 and h 3 absent)............................................................................ larva 2. Idiosoma saccate, soft bodied ( Fig. 1 ); gnathosoma developed, chelicerae chelate; anal attachment organ absent; genu I with 2 solenidia ( Fig. 3A ).................................................................................... 3 –. Idiosoma dorsoventrally flat, highly sclerotized ( Fig. 13 ); gnathosoma reduced, chelicerae absent ( Fig. 14 ); ventral hysterosoma with an anal attachment organ ( Fig. 14 ); genu I with 1 solenidion ( Fig. 16A )......................... deutonymph 3. With 2 pairs of genital papillae ( Fig. 2 ); ventral setae 3a and 4a present ( Fig. 2 ); solenidion ω 3 on tarsus I present ( Fig. 3A ); femur IV and tibia IV with setae ( Fig. 3D )................................................................. 4 –. With 1 pair of genital papillae ( Fig. 18 ); ventral setae 3a and 4a absent ( Fig. 18 ); solenidion ω 3 on tarsus I absent ( Fig. 20A ); femur IV and tibia IV nude ( Fig. 20D )............................................................ protonymph 4. Genital folds present ( Fig. 2 ); with either spermatheca ( Fig. 2 ) or aedeagus ( Figs 5 , 24B )............ (adult)........... 5 –. Genital folds absent ( Fig. 10 ); without spermatheca or aedeagus ( Fig. 10 )................................. tritonymph 5. Aedeagus present ( Figs 5 , 24B ); without a spermatheca; anal suckers present ( Fig. 6 ); adanal setae absent; tarsus IV with 2 suckers ( Fig. 8D ).............................................................. adult male...............6 –. Aedeagus absent but with a spermathecal ( Fig. 2 ); anal suckers absent; 3 pairs of adanal setae present ( Fig. 2 ); tarsus IV without suckers ( Fig. 3D )............................................................................. dult female 6. One side of leg III enlarged ( Fig. 8C )...................................................... heteromorphic male –. Leg III not enlarged but similar to leg IV ( Fig. 8E )............................................homeomorphic male