The millipede genus Antichiropus (Diplopoda: Polydesmida: Paradoxosomatidae), part 3: species of the Pilbara bioregion of Western Australia Author Car, Catherine A. Author Harvey, Mark S. Author Hillyer, Mia J. Author Huey, Joel A. text Zootaxa 2019 2019-06-17 4617 1 1 71 journal article 26472 10.11646/zootaxa.4617.1.1 3b74fc4d-1008-4903-90df-59d68431dee1 1175-5326 3248154 50F4058E-2871-4B5B-97D2-1CB216841C1E Antichiropus filiolus Car , n. sp. ( Figs 14 A–E, 16) ZooBank: urn:lsid:zoobank.org:act: 49F0DA5A-29E4-4E3D-848A-481DFA0A3653 Type material examined. Australia : Western Australia : holotype male (badly damaged), Flinders , ca. 100 km NW. of Tom Price , 22°10’34.2”S , 117°28’09.9”E , 4 April 2011 , stygofauna net , J.S. Cocking and M.K. Curran (WAM T116433) FIGURE 14. Antichiropus filiolus Car, n. sp. , holotype male ( WAM T116433 ): A–B, habitus: A , lateral view; B , dorsal view; C–E, left gonopod: C , posterior view; D , medial view; E , lateral view. Anterior view not available. Abbreviations : F, femorite; MFP, main femoral process; PF, prefemur; prof, prolongation of femorite; S, solenomere; sp1 and 2, solenomere processes1 and 2. Scale bars : A = 2 mm; B = 0.5 mm; C–E = 0.5 mm. Diagnosis. This species is minute compared with all other species with a short, simple gonopod. Description. Male holotype : Body ca. 10 mm long; midbody ring ca. < 1 mm wide, with lightly beaded waist, metazonite and prozonite of similar width. The only specimen pale and translucent, Colour true colour unknown ( Fig 14A ): leg colour slightly darker. No paranota ( Fig 14B ). Sternites without obvious processes/tubercles, sternal lamella narrow, rounded. Leg coxal processes absent. Anterior spiracles at midbody tiny, indistinct. Head smooth without noticeable sculpturing; frons with few setae; face narrow, maximum width ca. 3x the distance between antennal sockets; sockets separated by ca. 2x width of socket. Antennae of moderate length, reaching to ring 2, clavate. Collum (badly damaged) much shorter than head (in lateral view) ( Fig 14A ). Gonopod short, reaching ring 6; coxa (C) upright, short; prefemur (PF) much shorter than femorite; femorite (F) 3/5 acropodite length, upright, narrow at base, thickening abruptly towards apex; main femoral process (MFP) 1/3 femorite length, narrow, pointed; second femoral process (fp1) absent; prolongation of femorite (prof), narrow, upright, pointed; solenomere (S) short, forming small circle, thinner than femorite, generally of similar thickness along length, narrowing 2/3 along its length to broaden slightly again at its tip; solenomere tip asymmetrical with slight point; solenomere process (sp1) at solenomere tip, tiny, pointed; second solenomere process (sp2) near solenomere tip, broad, jagged ( Figs 14 C–E). Female: unknown. Distribution. This species is known from only one site, situated north-west of the town of Tom Price ( Fig 17 ). Etymology. This species is very small, with simple gonopods (Latin, noun, filiolus , little son).