Lobellina gladius, Hu & Jiang & Jiang, 2019

Hu, Ya-Hui, Jiang, Cheng & Jiang, Ji-Gang, 2019, Two new species of Lobellini from Central-South China (Collembola Neanuridae), Zootaxa 4712 (1), pp. 77-89 : 83-88

publication ID

https://doi.org/ 10.11646/zootaxa.4712.1.5

publication LSID

lsid:zoobank.org:pub:FDE1F7CF-A789-45B4-BC3F-AA254F91E04C

DOI

https://doi.org/10.5281/zenodo.5586700

persistent identifier

https://treatment.plazi.org/id/01298007-8847-FFE8-FF42-F99DFAC9E0FF

treatment provided by

Plazi

scientific name

Lobellina gladius
status

sp. nov.

Lobellina gladius sp. nov.

Figures 2, 4 View FIGURES 1–4 , 6 View FIGURES 5–6 , 10–14 View FIGURE 10 View FIGURES 11–14 , 16 View FIGURES 15–16 , 18, 20 View FIGURES 17–20 , Tables 4–5 View Table 4 View TABLE 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 GoogleMaps . Paratypes: 5 females and 2 juveniles, about 30 specimens in alcohol, the same data as holotype, collection number as J2018042904. One female, subadult, and GoogleMaps 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 GoogleMaps , 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 GoogleMaps , 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 GoogleMaps 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 View FIGURES 1–4 ) and white in alcohol ( Fig. 4 View FIGURES 1–4 ).

Chaetal morphology ( Fig. 6 View FIGURES 5–6 ). Dorsal ordinary chaetae of four types: Ml, Mc, Mcc and me. Macrochaetae Ml long, sheathed, smooth and with blunt tip, gladius shaped ( Fig. 6j View FIGURES 5–6 ), some Ml not sheathed and with pointed tip, such as F chaetae on head ( Fig.6k View FIGURES 5–6 ) and macrochaetae on Abd. VI ( Fig. 6l View FIGURES 5–6 ). Macrochaetae Mc similar to Ml morphologically, but shorter ( Fig. 6 View FIGURES 5–6 m–n). Macrochaetae Mcc morphologically similar to Mc and shorter than Mc ( Fig. 6o View FIGURES 5–6 ). Mesochaetae similar to ventral chaetae, thin, smooth, and pointed, with various length ( Fig. 6 View FIGURES 5–6 p–r, t). S-chaetae on terga thin, smooth, equal to Mc and longer than Mcc ( Fig. 6s View FIGURES 5–6 ).

Head ( Table 4 View Table 4 , Fig. 10 View FIGURE 10 ). Eyes 3+3, black ( Fig. 11 View FIGURES 11–14 ). Antenna 4-segmented ( Fig. 16 View FIGURES 15–16 ). 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 View FIGURES 11–14 ). Maxilla crochet form ( Fig. 13 View FIGURES 11–14 ). Labium with 11 chaetae and no x ( Fig.18 View FIGURES 17–20 ). Group Vi with 6+6 chaetae ( Fig.18 View FIGURES 17–20 ). Groups Vea, Vem and Vep with 5, 2 and 2 chaetae respectively. Dorsal chaetotaxy of head as in Table 4 View Table 4 . and Fig. 10 View FIGURE 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 View TABLE 5 & Fig. 10 View FIGURE 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 View TABLE 2 . Unguis with a basal inner tooth, unguiculus absent. Chaeta M present on tibiotarsus.

Abdomen ( Table 5 View TABLE 5 & Fig. 10 View FIGURE 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 View FIGURES 17–20 ).

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.

Table 4. Cephalic tubercles and chaetotaxy of Lobellina gladius sp. nov.

Tubercle Number and type of chaetae Names of chaetae
Cl 2 Ml 2 me F G
An 1 Ml 1 Mc 1 Mcc or Mc 1 me or Mcc B E C D
Fr 2 Mc 1 mcc or me A O
Oc 1 Ml Ocm
  2 Mc Oca, Ocp
Di 1 Mc 1me Di1 Di2
De 1 Mc 1 Mcc De1 De2
Dl 1 Mc+1 Mcc+2 me Uncertain
L 2 Mc Uncertain
So 2 Ml+2 Mc+6 me Uncertain

TABLE 5. Postcephalic tubercles and chaetotaxy of Lobellina gladius sp. nov.

Terga         Legs      
  Di De Dl L Scx2 Cx Tr Fe
Th. I Mc Mc Mc Ml 0 3 6 13 19
Th. II Th. III Terga 2Mc+me 2Mc+me 2Mc+2me+s 2Mc+2me+s 2Mc+Mcc+s+ms 3Mc+s Ml+Mc+me Ml+Mc+me 2 7 2 8 Sterna 6 6 12 11 19 18
Abd. I Abd. II 2Mc+me 2Mc+me Mc+2me+s Mc+2me+s 2Mc 2Mc Ml+Mc+me Ml+Mc+me VT: 7(6–8) Ve: 4, V1: 0      
Abd. III Abd. IV Abd. V 2Mc+me Mc+Mcc 2Mc+me Mc+2me+s Mc+me+s s 2Mc 2Mc Ml+2Mc+Mcc Ml+Mc+me 2Ml+2Mc+2me Mc+2Mcc+3me Ve: 4, Fu: 4, 0 mi Vei:3, Vec: 3, Vel: 3, Vl:6 Ag:2, Vl: 2  
Abd. VI ------------------- 4Ml+3me --------------------   Ve: 14, An: 3 mi    

Kingdom

Animalia

Phylum

Arthropoda

Class

Entognatha

Order

Collembola

Family

Neanuridae

SubFamily

Neanurinae

Tribe

Lobellini

Genus

Lobellina

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