Plumachaetas loriensis Oliveira & Greenslade & Bellini 2019, sp.nov.
Creators: name: Oliveira, Fábio G. L.
name: Greenslade, Penelope
name: Bellini, Bruno Cavalcante
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Entognatha
Collembola
Paronellidae
Plumachaetas
Plumachaetas loriensis

description: Plumachaetas loriensis sp.nov. Oliveira, Bellini & Greenslade
Figs 3B; 5B, C, E, H; 6A, C, G; 7B; 8B; 9 C–D; 10C–D; 11C–D; 12B; 13D–F; 14B, F, I, J; 15; Table1
Type material. Holotype female, deposited at Australian Museum of Sydney on slide Nº AMS/ COLL 00000007: Australia, New South Wales, Taree, Lorien Wildlife Refuge, 31° 45’04”S, 152°32’03” E, Malaise Trap, Forest, Dec 31/2011 ̅– Feb 4/2012, G. & B. Williams coll. Paratypes deposited at Australian Museum of Sydney on slides Nº AMS/ COLL 00000008–000000010: 2 males and 1 female on slides, same data as holotype. Paratypes deposited at South Australian Museum (SAMA), Nº SAMA / COLL 00000007–00000009: 1 male, 2 females on slides, same data as holotype.
Diagnosis. Tibiotarsi distal region dark blue (Fig.3B). Ant.IV apical region lacking thick chaeta (Fig.5B). Ant.I with 8-9 dorsal mac (Fig.5E). Labral chaetae p0–1 longer than others (as in Fig. 5H). Dorsal head chaetotaxy with 5 M and at least 2 Pi mac (Fig.8B). Labial basolateral and basomedian fields with chaetae M1 and L2 ciliated, others smooth (Fig.6C). Th.II central region with 8–9 m and 20–22 p mac (Fig.9C). Th.III central region with 27–29 mac (Fig.9D). Abd.I with 13–14 mac (Fig.10C). Abd.II with 8–9 central and 1–2 lateral mac (Fig.10D). Abd.III with 2 central and 4 lateral mac (Fig.11C). Abd.IV with 26–28 central and 26 lateral mac (Fig.11D). Trochanteral organ with 75–77 spine-like chaetae (Fig. 14B). Ventral tube anterior region with 7 +7 distal mac (Fig.13D). Dens lacking modified large distal chaeta, mucro with 2 teeth (Fig. 14I).
Description. Body pale yellow to brownish on ethanol; antennae and tibiotarsi light bluish with dark blue pigment on distal Ant.I–III, antero-dorsal and lateral head, lateral Th.II–Abd.V, distal tibiotarsi and distal femora. Eyepatches dark (Fig.3B). Apically pointed strongly ciliate elongate scales covering Ant.I–II, dorsal and lateral head, dorsal trunk, legs, ventral manubrium and dens; ventral tube devoid of scales. Body (head+ trunk) length of holotype 2796 μm (trunk: 2125μm; head: 671 μm).
Head. Antennae longer than body length (Fig. 3B). Holotype antennae lengths: 4269 μm (Ant.I =655 μm; Ant.II=1013 μm, Ant.III =712 μm, IV=1889 μm). Ant.IV not annulated and with at least two types of chaetae: blunt sensilla and normal ciliate chaetae of different sizes, without thick apical chaeta (Fig.5B). Ant.III apical sense organ with 2 small sensory rods in cavity plus 3 surrounding guard sensilla (Fig. 5C). Ant.I with 9 dorsal mac (Fig.5E). Prelabral chaetae (4) ciliate, labral chaetotaxy formula with 5 (p0–2), 5 (m0–2), 4 (a1–2) smooth chaetae, p0–1 longer than others (as in Fig.5H). Dorsal head chaetotaxy as in Fig.8B with 11 An, 4 A, 5 M, 9 S, 2 Ps, 2 Pi, 3 Pa, 3 Pm and 4 Pp mac, three extra mac near Pi series also present. Labial basolateral and basomedial fields with M1 and L2 as ciliate chaetae; r, e, l1 and a1–5 as smooth chaetae; M2 absent; r chaeta not reduced (Fig.6C). Labial palp with 5 main papillae (A–E) with 0, 5, 0, 4, 4 guard chaetae, respectively; papilla E with lateral process (l.p.) finger–shaped, not reaching the papilla base; papilla H with 2 accessorial chaetae (Fig.6A); labial papillae with 5 smooth proximal chaetae. Maxillary outer lobe with 1 apical smooth appendage (a.a.) and 1 subapical blunt discretely ciliate chaeta (b.c.); sublobal plate with 3 chaeta-like appendages (Fig.6G). Cephalic groove with several microchaetae and 10+ 10 surrounding mac (Fig.7B).
Trunk dorsal chaetotaxy. Th.II with 1 a (a5, excluding anterior collar), 8–9 central m (m 2i present or absent) and 20–22 central p main mac (Fig.9C). Th. III with 27–29 central mac (most with unclear homologies) plus a5–6 lateral mac (Fig.9D). Abd.I with 13–14 mac, acc.p6 sensillum present (Fig.10C). Abd.II with 8–9 central and 1–2 lateral mac (Fig.10D). Abd III with 1 a (a1), 4 m and 1 p mac (Fig.11C). Abd.IV with 26–28 central and 26 lateral mac, all with unclear homologies (Fig.11D). Abd.V with 3 a, 5 m, 13 p plus 8 mac with unclear homologies (Fig.12B).
Legs. Trochanteral organ with 75–77 spine-like chaetae (Fig.14B). Tibiotarsus III with one straight smooth chaeta near unguiculus, tenent-hair smooth, longer than unguis, anterior and posterior pretarsal chaetae present (Fig.14F). Ungues with 1 dorsal, 2 paired outer and 4 inner teeth, 2 proximal paired, 1 median and 1 distal; unguiculi lanceolate with outer lamella serrated (Fig.14F).
Abdominal appendages. Ventral tube anterior face with 7+7 distal mac (Fig.13D); posterior face lacking smooth distal chaetae, with several mic and mes of different sizes (Fig.13E); lateral flaps with about 11 smooth and 15 ciliate chaetae (Fig.13F). Manubrial plate with 2 mac and 2 pseudopores. Manubrium and dens dorsally covered by several chaetae, ventrally scaled; dens lacking modified large distal chaeta (Fig. 14I). Mucro bidentate (Fig. 14I).
Etymology. The new species was named after its type locality, the Lorien Wildlife Conservation Area, maintained by G. and T. Williams (see comments above under P.belae sp. nov.).
Distribution and habitat. Same locality and collection details as P.belae sp. nov. (see above) (Fig.15).
Remarks. Plumachaetas loriensis sp. nov. resembles P.halmaherae (Yoshii & Suhardjono, 1992) and P.sunae Zhang & Deharveng, 2015 (in: Zhang & Deharveng, 2015b) in its high number of central mac on Th.II–III. The new species differs from the other two in: dorsal head with 5 M mac and with at least 2 Pi chaetae (absent in the other two species); Th.II central region with 8–9 central m and 20–22 central p mac; Th.III with 27–29 central mac; Abd.I with13–14 mac; Abd.II with 8–9 central and 1–2 lateral mac; Abd.III with a1 mac; absence of thick chaeta on Ant.IV (present in P.sunae, unclear in P.halmaherae); p0 labral chaeta enlarged (as in P.sunae, normal in P.halmaherae); labial chaetae M1 and L2 ciliated (all smooth in P.halmaherae, M1–2, R, E, L 1–2 in P.sunae); lanceolate unguiculus (truncate in P.halmaherae and weakly truncate in P.sunae); trochanteral organ with about 75 spine-like chaetae; ventral tube anterior distal mac 7 +7; distal dens lacking modified enlarged chaetae (1 in P.sunae); and mucro with 2 teeth (see also Table 1).
description: Published as part of Oliveira, Fábio G. L., Greenslade, Penelope & Bellini, Bruno Cavalcante, 2019, Four new species of Plumachaetas Salmon (Collembola: Entomobryoidea) from Oceania with comments on the genus and a key to species, pp. 121-146 in Zootaxa 4706 (1) on pages 128-129, DOI: 10.11646/zootaxa.4706.1.5, http://zenodo.org/record/3565138