Paralobella tianmuna, Jiang, Ji-Gang, Wang, Wen-Bin & Xia, Hu, 2018

Jiang, Ji-Gang, Wang, Wen-Bin & Xia, Hu, 2018, Two new species of Lobellini from Tianmu Mountain, China (Collembola, Neanuridae), ZooKeys 726, pp. 1-14 : 7-10

Paralobella tianmuna sp. n. Figs 8-9, 10-15, Appendix 1, Tables 2 a– 2b

Material.

Holotype, female, 3.0 mm. Chanyuan Temple, Tianmu Mountain, Zhejiang Province. Coordinates: 30°19'40"N, 119°26'15"E, ca. 390 m a.s.l., 30 July 2011, leg. Ji-Gang Jiang (Housed in Hunan University of Arts and Science, J2011073001). Paratypes: two males, three females and two juveniles, same data as holotype (Housed in Hunan University of Arts and Science, J2011073001); one female, Hengwu, Tianmu Mountain, Zhejiang Province. 30°19'41"N, 119°26'14"E, 400-500 m a.s.l., 27 July 2011, leg. Ji-Gang Jiang (Housed in Hunan University of Arts and Science, J2011072704).

Etymology.

The new species is named after the type locality, Tianmu Mountain.

Diagnosis.

Habitus typical of the genus Paralobella . Dorsal tubercles round or oval and well developed. 3+3 unpigmented eyes. Labrum round, chaetotaxy as 0/ 2, 2. Mandible with seven teeth. Maxilla nearly styliform, apex with two hook-like teeth. Cephalic tubercle Fr with chaeta O. Tubercle An with four chaetae, chaetae C and D free from the tubercle. Tubercle Oc with three chaetae. Cephalic tubercle Di, De, Dl respectively with 1, 3, 4 chaetae. Tubercle De of Th. II-III each with four (3+s) chaetae. Unguis with an inner tooth, and without lateral tooth. VT with 4+4 chaetae. Furcular vestige with three chaetae and no microchaetae.

Description.

Body length: male 2.0-2.5 mm; female 2.1-3.5 mm. Body entirely red while alive and white in alcohol.

Head: Eyes 3+3 without pigment (Fig. 8). Ant. IV with trilobed apical bulb, and dorsal chaetotaxy as 8 sensilla, slender chaeta i, 12 sender, cylindrical chaetae and minute organite (Fig. 10). Labrum chaetotaxy as 0/ 2, 2 (Fig. 14). Labium with two minute distal x sensillum (Fig. 13). Mandible with seven teeth (Fig. 11). Maxilla nearly styliform, apex with two hook-like teeth (Fig. 12). Cephalic tubercles and chaetotaxy see Fig. 8 and Appendix 1, Table 2a. Macrochaetae on body weakly serrate, acuminate or with blunt apex. Mesochaetae and microchaetae smooth and pointed.

Body tubercles round or oval (Fig. 8-9). Chaetae Di3 free on the tubercles Di on Th. II-III. Abd. I-IV each with four tubercles. Abd. V with three tubercles, tubercle De only with an S-chaeta. The tubercles of Abd. VI with seven chaetae each. Body tubercles and chaetotaxy as in Appendix 1, table 2a and 2b.

Appendages: Unguis with an inner tooth, and without lateral tooth (fig. 15). VT with 4+4 chaetae. Furcular vestige with three chaetae and no microchaetae.

Remarks.

At present, 12 species belong to the genus Paralobella , all from Asia ( Jiang et al. 2012, Luo and Palacios-Vargas 2016). In general appearance, Paralobella tianmuna sp. n. strongly resembles P. perfusa (Denis, 1934) from Indochina in the structure of maxilla, the number of mandible teeth, the arrangement of body tubercles, the presence of chaeta O of tubercle Fr, the tubercle Di of Th. I with one chaeta, and the tubercle De and Dl of Abd. V separate. However, Paralobella tianmuna sp. n. can be distinguished from the latter by number of chaetae on body, the former has 3 chaetae on each tubercle Di of Th. II–III, 7 (6+s) chaetae on each tubercle L of Abd. II-III; the latter has 2 chaetae on each tubercle Di of Th. II–III, 4 (3+s) chaetae on each tubercle L of Abd. II-III. The new species is also similar to Chinese species P. breviseta Luo & Palacios-Vargas, 2016 and P. palustris Jiang, Luan & Yin, 2012 in the arrangement of body tubercles, the presence of chaeta O of tubercle Fr, tubercle Di of Th. I with one chaeta, and the separate tubercle De and Dl of Abd. V. The new species can be separated from its congeners by the following key.