Lobellina nanjingensis, Ma, Zhi-Chun & Chen, Jian-Xiu, 2008

Ma, Zhi-Chun & Chen, Jian-Xiu, 2008, A new species of Lobellina (Collembola: Neanuridae) from China, Zootaxa 1733, pp. 61-67 : 62-66

publication ID	https://doi.org/ 10.5281/zenodo.181371
DOI	https://doi.org/10.5281/zenodo.5659201
persistent identifier	https://treatment.plazi.org/id/DA63800C-FFC5-1A79-FF32-F8CAFAC5430C
treatment provided by	Plazi
scientific name	Lobellina nanjingensis
status	sp. nov.

Treatment

Lobellina nanjingensis sp. nov.

Figs 2–13 View FIGURES 1 – 7 View FIGURES 8 – 13 , Tables 1–3 View TABLE 1

Type material. Holotype: 1 male, China, Jiangsu Province, Nanjing, Qiangliangshan Park, 28-IV-2006, collection number C9314, collected by Mazhichun and Qiaohui. Paratypes: 7 females and 5 males, same data as holotype. Deposited in the School of Life Science, Nanjing University.

Description. Body length: Up to 1.65mm.

Colour pattern: head and body entirely yellow in life

Head: Head hypognathous. Eyes 3+3 without pigment ( Fig. 2 View FIGURES 1 – 7 ). Postantennal organ absent. Antennae 4- segmented. Ant. I & II respectively with 7 and 11 setae. Ant. III & IV dorsally fused. Ant. III with 18 setae and 5 s (including 2 short rods of sensory organ in single pit, sgd, sgv and ms), sgv distinctly curved backward. Ant. IV bearing 3-lobed apical bulb, dorsal chaetotaxy as 8S, i, 12 mou and or ( Fig. 3 View FIGURES 1 – 7 ). Labrum chaetotaxy 4/3, 2 ( Fig. 4 View FIGURES 1 – 7 ). Labium with 3 proximal setae (A, C, D) and 2 large x setae on palps, 4 setae (E, F, G, f) on submentum and 4 setae (b, c, d, e) on mentum (after Massoud 1967) ( Fig. 5 View FIGURES 1 – 7 ). Mandible with 7 teeth ( Fig. 6 View FIGURES 1 – 7 ). Maxilla nearly styliform, apex with 2 hook-like teeth ( Fig. 7 View FIGURES 1 – 7 ). Line connecting macrosetae Di 1 and De 1 transects line connecting macrosetae Di 2 and De 2 ( Fig. 2 View FIGURES 1 – 7 ). Dorsal cephalic tubercles and chaetotaxy as shown in Fig. 2 View FIGURES 1 – 7 and Table 1 View TABLE 1 . Ventral cephalic setae as Vi 6 and Ve 6–7.

Body tubercles and chaetotaxy: Shown in Fig. 8 View FIGURES 8 – 13 , Fig. 9 View FIGURES 8 – 13 and Table 2. Integument without tertiary granules. Tubercles rounded. Sensory seta (s) and microseta (ms) formula as 2+ms, 2/1,1,1,1,1. Each anal lobe with 3 microsetae in both sexes ( Fig. 10 View FIGURES 8 – 13 ). Genital plate with 20–26 and 20–31 setae respectively in female ( Fig. 11 View FIGURES 8 – 13 ) and male ( Fig. 12 View FIGURES 8 – 13 ).

Terga Legs

Di De Dl L Scx2 Cx Tr Fe T Th. I M 2M M ---- 0 3 6 12 19 Th. II 2 M+mi 4M+s 3M+s+ms 3M 2 7 6 12 19 Th. III 2 M+mi 3M+s+mi 3(4)M+s 2M+me 2 8 6 11 18

Terga Sterna

Abd. I 2 M 2M+mi+s 2M 2M+2me VT: 5

Abd. II 2 M 2M+mi+s 2M 2M+2me Ve: 4 Ve1: absent

Abd. III 2 M 2M+mi+s 2M 2M+2me Ve: 4 Fu: 3me, 0mi Abd. IV 2 M 2M+s 2M+mi 4M+2me Ve: 7 Vl: 5(4)

Abd. V 2 M+mi s 3M+mi 2M+2(3)me Ag: 3 Vl: 1

Abd. VI 6 M+me Ve: 14 An: 3mi

Appendages: Chaetotaxy of legs, ventral tube and furcular remnant shown in Table 2. Ventral tube with 5+5 setae. Furcular vestige with 3 setae. Unguis carinate with granules and transverse striae, inner tooth small and located at base of unguis. Unguiculus absent ( Fig. 13 View FIGURES 8 – 13 ).

Etymology. The new species is named after the type locality.

Ecology. Found in leaf litter in deciduous forest.

Remarks. The new species is assigned to Lobellina although a few of its characters differ from the diagnosis of the genus made by Deharveng and Weiner (1984). The characters that conform to the diagnosis are: integument without tertiary granules; body tubercles rounded; macrosetae thick and blunt at apex; eyes 3+3; maxillae styliform; mandibles tridentate to multidentate; sensory seta (s) and microseta (ms) formula as 2+ms, 2/1,1,1,1,1; tubercle L of Abd. I without sensory seta; cephalic chaetotaxy rather stable, tubercles Oc, Di and Dl respectively with 2, 1 and 2 or 3 macrosetae, line connecting macrosetae Di 1 and De 1 transects line connecting macrosetae Di 2 and De 2; each tubercle Di on Th. II–III with 2 macrosetae ( Di 1, Di 2) and 1 tiny microseta ( Di 3); and Abd. V with 2+2 or 3+3 tubercles, and with dorsolateral sensory seta set on isolated small tubercle De or integrated with tubercle Dl. However, the new species differs from the diagnosis in the following characters: eyes without pigment; labral chaetotaxy as /3, 2 rather than /2, 2; sdg of Ant. IV displaced anteriorly; and cephalic tubercle De with 3 rather than 2 macrosetae. Examination of all species in the genus is required before a decision can be made on whether the new species should have a new genus erected for it or the diagnosis of the genus Lobellina be modified to accommodate the new species.

In addition to the distinctive characters of the new species, it also differs from all known members of the genus in having 5+5 setae on the ventral tube and other characters as shown in Table 3. It is closest to Korean species L. paraminuta in the structure of the mandible and maxilla, the presence of cephalic seta O, the number of setae on tubercle Di of Abd. V, and the number of dorsal tubercles on Abd. V. However, it is easily separated from the latter by the body colour, the number of ventral tube setae, the structure of macrosetae, the type of cephalic seta O and the number of ocular setae ( Table 3).

Colour in life Mandible Maxilla

lamellae teeth lamellae teeth

nanjingensis yellow 1 7 2, fused 2 & 0; hook-like sp. nov.

chosonica? 2 5 & 2–3 2, fused 2 & 0 ionescui? 1 7 2, separate 2 & 0; hook-like ipohensis red 1 3?? kitazawai? 2 5 & fringe-like 2, separate 2 & 2 minuta red 1 5 2, separate 1 & 0; hook-like montana? 1 7 2, separate 2 & 1; hook-like musangensis? 1 8 2, separate 2 & 0 paraminuta orange 1 7 2, fused 2 & 0; hook-like perfusionides ????? proxima? 1 7 2, separate 2 & 1; hook-like roseola red 2 5 & fringe-like 2, separate 2 & 2

continued.

musangensis smooth absent 2 2 2+2 4+4 paraminuta smooth me 3 3 3+3 4+4