Description of two new genera, three new species, and redescription of two species of Pronematinae (Acari: Iolinidae) Author De VisK, Raf M. J. Research Station for Vegetable Production (PSKW), 2860 Sint-Katelijne-Waver, Belgium. Author VervaetK, Lore Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University (UGent), Coupure Links 653, 9000 Ghent, Belgium. Author LeeuwenK, Thomas Van Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University (UGent), Coupure Links 653, 9000 Ghent, Belgium. Author K, Alice de Freitas Braga Departamento de Entomologia e Acarologia, Escola Superior de Agricultura Luiz de Queiroz (ESALQ), Universidade de São Paulo (USP), Piracicaba 13418 - 900, São Paulo, Brazil. Author K, Raphael de Campos Castilho Departamento de Entomologia e Acarologia, Escola Superior de Agricultura Luiz de Queiroz (ESALQ), Universidade de São Paulo (USP), Piracicaba 13418 - 900, São Paulo, Brazil. Author UeckermannK, Edward A. Unit for Environmental Sciences and Management, Potchefstroom Campus, North-West University, Private Bag X 6001, Potchefstroom, 2520, South Africa. & Research Station for Vegetable Production (PSKW), 2860 Sint-Katelijne-Waver, Belgium. text Acarologia 2024 2024-10-16 64 4 1063 1099 https://doi.org/10.24349/z0vq-ji83 journal article 10.24349/z0vq-ji83 2107-7207 14670390 Duoparus De Vis & Ueckermann n. gen. Zoobank: 24BED0D5-7245-4975-A055-0C435A03BD78 Type species — Duoparus hyeresensis n. gen. n. sp. Description — Adult female. Aspidosoma procurved, with four pairs of setae bo , ro , la and ex ; opisthosoma with 11 pairs of setae, c1 , c2 , d1 , e1 , f1 , f2 , h1 , h2 , ps1 , ps2 and ps3 . Poroidotaxy: ia , im , ip , ih . Eye spots absent. Two pairs of subequal aggenital setae, supposedly ag1 and ag3 with ag2 and ag4 absent. Empodium and claws absent on leg I, each of other legs with ciliate empodium and two claws, without empodial hooks. Femur IV divided. Leg chaetotaxy: leg I 9 + ω – 3 + φ + κ – 3 – 3 – 1; leg II 7 + ω – 2 – 3 – 3 – 1; leg III 6 – 2 – 2 – 2 – 1; leg IV 6 – 2 – 1 – 1 + 1 – 0. Epimeral formula 3-1-4-2. Diagnosis — Adult female of the genus is characterised by the presence of two pairs of ag setae, one seta on trochanters I to III, seven setae on tarsus II and six on each of tarsi III and IV. The genus is closely related to Pseudopronematulus that differs in having four pairs of ag setae. Etymology — The genus name refers to the presence of only two pairs of aggenital setae ( ag ): ‘ duo ’, Latin for two and ‘ par ’, Latin for pair. Remark — André (1979: 204) considered the description of a new genus based on one specimen to be unadvisable, except when the specimen exhibits very special characteristics. We consider the presence of only two ag setae a special characteristic and therefore describe this new genus. More diagnostic features can be found in the differential diagnosis of the type species, some of which might be generic, but we limit the genus description mostly to chaetotaxy of body and legs ( André 1980 ).