Paleonura bilinskii, Paśnik, Grzegorz & Weiner, Wanda Maria, 2013

Paśnik, Grzegorz & Weiner, Wanda Maria, 2013, Paleonura bilinskii (Collembola, Neanuridae, Paleonurini), a new species from Ecuador, Zootaxa 3702 (3), pp. 295-300 : 295-299

publication ID	https://doi.org/ 10.11646/zootaxa.3702.3.7
publication LSID	lsid:zoobank.org:pub:2C23FA48-C5BA-4E33-AED9-6D30DA859646
DOI	https://doi.org/10.5281/zenodo.5697630
persistent identifier	https://treatment.plazi.org/id/03C0B80F-FFA0-0C60-03AF-FAE3FEABFAC6
treatment provided by	Plazi
scientific name	Paleonura bilinskii
status	sp. nov.

Treatment

Paleonura bilinskii sp. nov.

Figs 1–7, Tab. 1 View TABLE 1

Diagnosis. Habitus typical of the genus Paleonura ( Fig. 1 and 2 View FIGURES 2 – 4 ). Dorsal tubercles poorly developed, distinct only on posterior abdominal segments. Buccal cone elongate. Head with 2 Oc chaetae. Ant. IV with trilobed apical vesicle. Tubercles Af and CL with A, B, C, D and F, G chaetae respectively. Tubercles De on Th. II and III with 2 chaetae + S. Tubercles De on Abd. I–III with 2 chaetae + S. Tubercles De and Dl on Abd. IV separated with 2 + S and 3 chaetae respectively.

Type material. Holotype: male (E–99–1–HT), paratypes: male (E–99–1/2), 2 females (E–99–1/3–4). All deposited in the Institute of Systematics and Evolution of Animals PAS in Kraków ( ISEA).

Type locality. Ecuador, El Ángel Reserve, Páramo (0°43'02,67'' N, 77°57'59,47'' W), 3600–3700 m, 6.VI.1999, in the axils of marcescent leaves of ESpeletia, Sz. Biliński leg.

Etymology. Named for Sz. Biliński who collected the specimens.

Description. Body length 2.1–2.51 mm males and 2.72–3.14 mm females. Colour white in alcohol, orange-red alive ( Fig. 1). Cuticular granulation homogenous, rather fine, except for small areas around some setae. Abd. VI bilobed ( Fig. 2 View FIGURES 2 – 4 ).

Antennae shorter than head (about 3/4 of the length of head). Ant. I with 7 chaetae, Ant. II with 11 chaetae. Ant. III and IV fused dorsally, ventral separation well marked. Sensory organ on antennal segment III consisting of two small internal sensilla bent in the same direction, two almost equal, subcylindrical guard sensilla and a small ventral microsensillum. Ant. IV dorsally ( Fig. 5 View FIGURES 5 – 10 ) with ordinary chaetae and 8 thick subequal cylindrical S chaetae, two dorso-external and six dorso-internal. Ant. IV organite as a short thick rod. Apical vesicle distinct, trilobed. Ventral chaetotaxy of Ant. IV as in Fig. 6 View FIGURES 5 – 10 .

Eyes 2+2 large, without pigmentation. Head without well developed tubercles ( Fig. 3 View FIGURES 2 – 4 ). Ocular area with two setae. Mandible with two teeth, maxilla without lamellae, styliform. Labium with 3 distal (A, C, D), 3 basal (E, F, G) and 3 lateral chaetae (c, d, e)( Fig. 7 View FIGURES 5 – 10 ). Head chaetotaxy as in Fig. 3 View FIGURES 2 – 4 and Tab.1 View TABLE 1 .

Total dorsal chaetotaxy as in Fig. 2 View FIGURES 2 – 4 and Table 1 View TABLE 1 . Abd. III–IV with poorly developed tubercles De. Abd. V with moderately developed tubercles De+Dl+L. Tubercles De and Dl separated on Abd. IV. Tubercles De, Dl and L fused on Abd. V on each side of axis.

Tibiotarsi I, II and III with 18, 18 and 17 chaetae respectively (chaeta M absent) ( Fig. 10 View FIGURES 5 – 10 ). Leg chaetotaxy given in Table. 1 View TABLE 1 . Claw without teeth.

Ventral chaetotaxy as in Fig. 4 View FIGURES 2 – 4 . VT with 4+4 chaetae. Furcula vestige with 4 mesochaetae, without microchaetae. Male and female genital plates as in Figs 8 and 9 View FIGURES 5 – 10 respectively. Anal tubercle with 12 chaetae and 2 microchaetae.

Remarks. Paleonura bilinSkii sp. nov. is distinguished from other species of the genus by the combination of the following characters: head with 2+2 eyes and two chaetae Oc.; tubercle Af with chaetae A, B, C and D; Ant. 4 with trilobed apical vesicle; tubercles De on Th. II and III with 3 chaetae (2 + S); tubercles De and Dl on Abd. IV separated and with 3 chaetae (2 + S); tubercle Di on Abd. V with two chaetae.

Among other Neotropical species of Paleonura with 2+2 eyes, two ocular chaetae and separated tubercles De and Dl on Abd. V, the new species most closely resembles P. daniae Palacios-Vargas & Diaz, 1992 from Cuba and P. friaSica Cassagnau & Oliveira, 1990 from Argentina. It can be distinguished from them by the trilobed apical vesicle of Ant. IV and presence of three chaetae De and Dl on Abd. IV (two in both other species). The new species differs from P. daniae also by the presence of chaeta A on tubercle Af (absent in P. daniae ) and the tubercle L with three chaetae on Th. II–III and Abd. I–III (two chaetae in P. daniae ), whereas from the second species it differs by the lack of chaeta E on tubercle Af (present in P. friaSica) and the presence of five chaetae L on Abd. IV (four chaetae in P. friaSica).

Cephalic chaetotaxy * tubercle poorly developed

Postcephalic, ventral and leg chaetotaxy * on each anal valvae