A synthesis of the current knowledge on the Australian Orchesellidae (Collembola, Entomobryoidea) Author Bellini, Bruno Cavalcante Laboratory of Collembola, Department of Botany and Zoology, Biosciences Center, Federal University of Rio Grande do Norte (UFRN), Highway BR- 101, Lagoa Nova, Campus Universitario, 59072 - 970, Natal, RN, Brazil. Author Greenslade, Penelope Environmental Management, School of Life and Health Sciences, Federation University, Ballarat, Vic. 3353, Australia. & School of Biology, Australian National University, GPO Box, ACT 0200, Australia. Author Baquero, Enrique University of Navarra, Faculty of Sciences, Institute for the Biodiversity and Enviroment (BIOMA) and Department of Environmental Biology, University Campus, 31080, Pamplona, Spain. Author Jordana, Rafael 0000-0001-9088-787X University of Navarra, Faculty of Sciences, Institute for the Biodiversity and Enviroment (BIOMA) and Department of Environmental Biology, University Campus, 31080, Pamplona, Spain. & rjordana @ unav. es; https: // orcid. org / 0000 - 0001 - 9088 - 787 X rjordana@unav.es Author Souza, Paolla Gabryelle Cavalcante De 0000-0003-0612-8438 Laboratory of Collembola, Department of Botany and Zoology, Biosciences Center, Federal University of Rio Grande do Norte (UFRN), Highway BR- 101, Lagoa Nova, Campus Universitario, 59072 - 970, Natal, RN, Brazil. & paollasouzac @ gmail. com; https: // orcid. org / 0000 - 0003 - 0612 - 8438 paollasouzac@gmail.com text Zootaxa 2022 2022-03-14 5115 2 221 257 journal article 20240 10.11646/zootaxa.5115.2.3 424635ea-0470-4276-867b-b7fe0800c5bc 1175-5326 6352296 52305F19-9185-448D-AE5C-AE90353C7460 Australotomurus immodestus Mari-Mutt & Greenslade, 1985 Figs 8 , 11 , Tables 2 – 3 FIGURE 11. Dorsal macrochaetotaxy of Australotomurus immodestus : A , head; B , Abd. II; C , Abd. III; D , Abd. IV. Diagnosis. Size of adult specimens about 2 mm , background light bluish, dorsally with dark spots and bands, ventral head and trunk almost black. Ant. II undivided (antennae with five segments). Males’ Ant. Ib internally with about 45 modified short densely ciliate chaetae plus 19 minute smooth chaetae, Ant. II internally with 21–25 modified chaetae of different shapes, 2–3 of them very large. Males’ Ant. II straight (not angled). Antero-lateral head without clusters of differentiate chaetae. Labial basomedian field posteriorly with 10 ciliate chaetae internal to E . Dorsal head with A3 , A4–4e , A6p , M1 , M2 , M3i , S0’ , S1e , S2 , S4i , S4e , S5a , S5e , and Ps 2 mac, M0 , Ps 3 , and Ps 5 mac absent ( Fig. 11A ). Abd. II with a3a and m3ep mac, plus three mac on the m3ea complex, m4 and p4 mac absent ( Fig. 11B ); Abd. III with a2–2a , a3 , and m3ea mac, m3p , m3eai , m 3ei , and p3 mac absent ( Fig. 11C ); Abd. IV macrochaetotaxy reduced, with A2 , B5 , and xa mac, A5 , xp , C4 , T1 , and T6 mac absent ( Fig. 11D ). Trochanteral organ with about 34–35 spine-like chaetae. Unguis with two unpaired inner teeth. Tenaculum with 8 chaetae (adapted from Mari-Mutt & Greenslade 1985 ).