Lobellina gladius Hu & Jiang & Jiang 2019, sp. nov.
Creators: name: Hu, Ya-Hui
name: Jiang, Cheng
name: Jiang, Ji-Gang
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Entognatha
Collembola
Neanuridae
Lobellina
Lobellina gladius

description: Lobellina gladius sp. nov.
Figures 2, 4, 6, 10–14, 16, 18, 20, Tables 4–5
Type material. Holotype: male, China, Hunan, Xinning county, Langshan National Geopark. Coordinates: 26.273767N, 110.732951E, alt. 770m, in forest of bamboo, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 29.iv.2018. Paratypes: 5 females and 2 juveniles, about 30 specimens in alcohol, the same data as holotype, collection number as J2018042904. One female, subadult, and 4 juvenile, Guangxi, Ziyuan county, Langshan National Geopark. Coordinates: 26.274416N, 110.732011E, alt. 685m, in forest of bamboo, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 29.iv.2018 (J2018042903). Female and male, Guangxi, Ziyuan county, Langshan National Geopark. Coordinates: 26.276824N, 110.730528E, alt. 510m, nearby the entrance of the Park, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 29.iv.2018 (J2018042901). One male, Hunan, Xinning county, Shunhuangshang National Nature Reserve, Coordinates: 26.450028N, 111.014716E, alt. 930m, in forest, leg. Ji-Gang Jiang, Cheng Jiang, Li-Ping Duan, 1.v.2018 (J2018050102). Type materials are housed in the Key Laboratory of Zoology, Hunan University of Arts and Science (HUAS), Changde, Hunan Province, China.
Diagnosis. Three pigmented eyes on head, mandible with six teeth, cephalic chaeta O present and including in tubercle Fr, cephalic tubercle Di not fused, non-cross type chaetotaxy on posterior area of head, cephalic lateral tubercle Dl, L and So independent respectively, Ant. I with 9 chaetae, Th. I with 4+4 tubercles, VT with 6–8 (usually 7) chaetae.
Description. Body length: holotype, male, 4.0 mm. Usually, males: 4.0– 4.4 mm, females: 3.5–4.8 mm, juveniles: 1.5–3.5 mm.
Body color. Red while living (Fig. 2) and white in alcohol (Fig. 4).
Chaetal morphology (Fig. 6). Dorsal ordinary chaetae of four types: Ml, Mc, Mcc and me. Macrochaetae Ml long, sheathed, smooth and with blunt tip, gladius shaped (Fig. 6j), some Ml not sheathed and with pointed tip, such as F chaetae on head (Fig.6k) and macrochaetae on Abd. VI (Fig. 6l). Macrochaetae Mc similar to Ml morphologically, but shorter (Fig. 6 m–n). Macrochaetae Mcc morphologically similar to Mc and shorter than Mc (Fig. 6o). Mesochaetae similar to ventral chaetae, thin, smooth, and pointed, with various length (Fig. 6 p–r, t). S-chaetae on terga thin, smooth, equal to Mc and longer than Mcc (Fig. 6s).
Head (Table 4, Fig. 10). Eyes 3+3, black (Fig. 11). Antenna 4-segmented (Fig. 16). Ant. I with 9 Chaetae. Ant. II with 9–11 Chaetae. Ant. III dorsally fused to Ant. IV. Two guard chaetae sgd and sgv present. Two short rods exposed in separate pit. Ant. IV dorsally with 8 thickened and curved sensilla, apical bulb trilobed. sensory organite (or) present. Ventral chaetotaxy of Ant. IV: ap with 7 bs and 3 miA, ca with 3 bs and 1 miA, cm with 2 bs and 2 miA, cp with 1 miA. On ventral side of Ant. III, Vi, Vc, Ve respectively with 3, 5, 4 chaetae.
Buccal cone weakly developed, labrum truncated, chaetal formula as 0/2, 2. Mandible with four apical teeth, one curved middle tooth and one basal tooth (Fig. 12). Maxilla crochet form (Fig. 13). Labium with 11 chaetae and no x (Fig.18). Group Vi with 6+6 chaetae (Fig.18). Groups Vea, Vem and Vep with 5, 2 and 2 chaetae respectively. Dorsal chaetotaxy of head as in Table 4. and Fig. 10. Dorsal central area with 6 separate tubercles: 1 tubercle Cl, 2 An, 1 Fr and 2 Oc. Dorsal posterior area with 4 separate tubercles: 2 Di and 2 De. Line of chaetae Di2–De2 not crosses line Di1– De1 on head (non-cross type, Deharveng, 1983). Dorsal lateral area with 3 separate tubercles: Dl, L and So.
Thorax (Table 5 & Fig. 10). Th. I with 4+4 tubercles (Di, De, Dl and L). Th. II and Th. III with 4+4 tubercles respectively. Chaetotaxy of thorax and legs as in Table 2. Unguis with a basal inner tooth, unguiculus absent. Chaeta M present on tibiotarsus.
Abdomen (Table 5 & Fig. 10). Abd.I–IV respectively with 4+4 tubercles. Abd. V dorsally with 3+3 tubercles, two tubercles Di separate from each other, tubercle De separate from Dl, tubercle L present, on ventral side. Abd. VI with 1 tubercle on each side. VT with 7+7 chaetae, sometimes 6+6 or 8+8. Furcular remnant with 4 chaetae (Fig. 20).
Etymology. The name of the species derives from the “ gladius ” shape of its macrochaetae.
Remarks. The new species can be separated from known species by the following characters: Th. I with 4+4 tubercles; tubercle Di with 3 chaetae on Abd. I–III respectively, VT with 6–8 chaetae (usually 7); non-crossed type chaetae on cephalic posterior area. Including the new species, sixteen species of genus Lobellina are known worldwide. Seven of them have O chaeta on cephalic tubercle Fr, of which, 4 with chaeta O free from the tubercle, and three species, i.e. L. nanjingensis, L.fusa and L. gladius sp. nov. with chaeta O included in tubercle Fr. The new species can be easily differentiated from the other two species of the last group by the following key.
description: Published as part of Hu, Ya-Hui, Jiang, Cheng & Jiang, Ji-Gang, 2019, Two new species of Lobellini from Central-South China (Collembola Neanuridae), pp. 77-89 in Zootaxa 4712 (1) on pages 83-88, DOI: 10.11646/zootaxa.4712.1.5, http://zenodo.org/record/3586860