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 morbidus Greenslade & Jordana, 2014 Figs 8 , 14–15 , Tables 2 – 3 Diagnosis. Size of adult specimens about 2.5–3 mm , background colour white, dorsally with several dark spots and bands in a consistent pattern, Abd. III–IV more intensely pigmented. Ant. II undivided, Ant. III almost subdivided (antennae with five segments). Males’ Ant. Ib externally with about 40–50 modified short densely ciliate chaetae plus 10 minute smooth chaetae anteriorly, Ant. II without dimorphic chaetae, Ant. III internally with five strong long mac. Males’ Ant. II straight, Ant. III internally angled. Antero-lateral head without clusters of differentiate chaetae. Dorsal head with A3 , A4 , A6p , M0 , M2 , S2–2i , Ps 2 , and Ps 5 mac, S0’ , M1 , and Ps 3 mac absent ( Fig. 14A ). Th. II lacking p1i2 , m4p2 , and m4i2 mac, m4ai complex with one mac, m5 mac present ( Fig. 14B ); Th. III lacking p1i2 and m1a mac, m5p mac present ( Fig. 14C ); Abd. I macrochaetotaxy reduced, lacking a1ae–1ae2 , a2ae–2ae2 , a3a– 3ai2 , p6 , and m6 mac ( Fig. 14D ); Abd. II with m3ep mac present or absent, 3–5 mac on the m3ea complex, m 3ei , m4 , and p4 mac absent ( Fig. 15A ); Abd. III with a2a and a3 mac, a3a–a2 , a3i , and m3ea present or absent, m 3ei , m3eai , m3p , and p3 mac absent ( Fig. 15B ); Abd. IV with A1–3 , A5 , Ae 2–5 , B3 , B5 , C4 , and T6 mac, Ae4 , Ae8 , and Be2 present or absent, T1 mac absent ( Fig. 15C ). Trochanteral organ with about 25 spine-like chaetae. Unguis with three unpaired inner teeth. Tenaculum with 11 chaetae (adapted from Greenslade & Jordana 2014 ). Remarks. To interpret the dorsal macrochaetotaxy of the posterior head of this species we only considered the left side of the original description ( Greenslade & Jordana 2014 , p. 567, fig. 16).