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 montanus Mari-Mutt & Greenslade, 1985 Figs 8 , 13 , Tables 2 – 3 Diagnosis. Size of adult specimens about 2 mm , Th. II unpigmented except for its anterolateral dorsal margin and ventral region, Th. III–Abd. VI completely pigmented. Ant. II undivided (antennae with five segments). Males’ Ant. Ib internally with about 40–45 modified short densely ciliate chaetae plus 10–14 minute smooth chaetae, Ant. II internally with about 20 slender densely ciliated chaetae, none remarkably large. Males’ Ant. II straight (not angled). Antero-lateral head without clusters of differentiate chaetae. Labial basomedian field posteriorly with 5–8 ciliate chaetae internal to E . Dorsal head with A3 , A4–4e , A6p , S0’ , S4i , S5a , S5e , Ps2 , and Ps5 mac, M0–2 , S2 , and Ps3 mac absent ( Fig. 13A ). Abd. II with a3a and p4 mac, plus 5–6 mac on the m3ea complex, a1a , a2a2–2a3 , and m 3ei present or absent, m3ep and m4 mac absent ( Fig. 13B ); Abd. III with a2 , a3–3a , and m3eai mac, a1a , m 3ei , m3ea , m3p , and p3 mac present or absent ( Fig. 13C ); Abd. IV with A2–3 , Ae5 , B3 , B5 , and xa mac, A5 , xp , C4 , T1 , and T6 mac absent ( Fig. 13D ). Trochanteral organ with about 20 spine-like chaetae. Unguis with four inner teeth, with the paired proximal teeth (see Mari-Mutt & Greenslade 1985 , p. 239, fig. 79). Tenaculum with 6–7 chaetae (adapted from Mari-Mutt & Greenslade 1985 ).