Endonura asiatica , Smolis, Adrian, Deharveng, Louis & Kaprus’, Ighor J., 2011

Smolis, Adrian, Deharveng, Louis & Kaprus’, Ighor J., 2011, Studies on the non-European Endonura Cassagnau, 1979 (Collembola, Neanuridae, Neanurinae), Zootaxa 3004, pp. 45-56: 49-51

publication ID

10.5281/zenodo.278475

persistent identifier

http://treatment.plazi.org/id/03C9E776-FFD8-FFB9-BCAB-FC96A4A9FF72

treatment provided by

Plazi

scientific name

Endonura asiatica
status

sp. nov.

Endonura asiatica  sp. nov.

Figs 11–21View FIGURES 11 – 21, Tab. 2

Type material. Holotype: adult female on slide: Kyrgystan: Issyk-kul district, Griegorievskoye Uschel’ye, near Bozteri, under the bark of rooting log of the sorb, spruce forest, 9.vi. 2006. leg. R. J. Pomorski. Paratypes: 3 females and 5 males, same data as holotype, 5, 2 and 1 paratypes in ZIWU, MNHNP and MNHL respectively.

Other material. 1 female on slide: Kyrgystan: Issyk-kul district, Karakol area, Dzhety Oguz, under the bark of spruce, 25.vii. 2005, leg. R. J. Pomorski, ZIWU.

Etymology. The species name refers to its terra typica.

Diagnosis. Habitus typical of the genus Endonura  . Dorsal tubercles present and well developed, except tubercles Di on th. I. 2 + 2 eyes dark pigmented. Buccal cone rather short. Head with chaetae A, B, C, D and E. Chaeta O present. Tubercles Dl and (L+So) on head with 6 and 10 chaetae respectively. Tubercles De on th. II and III with 3 and 4 chaetae respectively. Tubercles L on abd. III and IV with 4 and 7 chaetae respectively. Abd. IV and V with 8 and 3 tubercles respectively. Claw without inner tooth. Tibiotarsi with chaetae B 4 and B 5 short.

Description. Habitus typical of the genus. Body length (without antennae): 0.86–1.45 mm (holotype: 1.38 mm). Colour of the body bluish grey. 2 + 2 medium dark-pigmented eyes ( Fig. 1View FIGURES 1 – 10).

Types of dorsal ordinary chaetae. Macrochaetae Ml rather long, thickened, tapered, fusiform, straight or slightly arc-like, narrowly sheathed, feebly serrated, apically rounded or pointed ( Figs 11–12, 18 – 21View FIGURES 11 – 21); macrochaetae Mc and Mcc thickened, fusiform, straight or slightly arc-like, apically rounded or pointed; mesochaetae and microchaetae short, thin, feebly serrated and pointed.

Head. Buccal cone short. Labrum rounded, with ventral sclerifications as in Fig. 17View FIGURES 11 – 21. Labrum chaetotaxy 2–4 / 2, 4, sometimes median prelabral chaetae absent. Labium with four basal, three distal and four lateral chaetae, papillae x absent. Maxilla styliform ( Fig. 16View FIGURES 11 – 21), mandible thin with two basal and two apical teeth ( Fig. 15View FIGURES 11 – 21). Chaetotaxy of antennae as in Tab. 2 c and in Figs 13–14View FIGURES 11 – 21. Apical vesicle distinct, trilobed ( Fig. 13View FIGURES 11 – 21). S–chaetae of ant.IV of medium length and moderately thickened, S 3 slightly thinner than others ( Fig. 13View FIGURES 11 – 21). Chaetotaxy of head as in Tab. 2 a, b, and Figs 11–12View FIGURES 11 – 21. Tubercles Cl and Af separate ( Fig. 11View FIGURES 11 – 21). Chaeta O present. Chaetae D and E free. Anterior eye located outside tubercle Oc ( Fig. 11View FIGURES 11 – 21). Tubercle Dl with 6 chaetae, chaeta Dl 3 present. Tubercle (L+So) with 10 chaetae, chaetae So 3 and L 3 present. Elementary tubercle BE absent. Chaeta A shorter than B.

Thorax, abdomen, legs. Body s-chaetae thin and smooth, shorter than nearby macrochaetae ( Fig. 12View FIGURES 11 – 21). Chaetotaxy of th. and abd. as in Tab. 2 d and in Figs 12, 18–21View FIGURES 11 – 21. Tubercles Di on th.I not differentiated. Chaetae De 3 on th. III and abd. I–III as Mcc or Mc. Chaetae De 2 on th. II–III and De 3 on th. III free. Chaetae De 3 on abd. I–III free ( Fig. 12View FIGURES 11 – 21). The line of chaetae De 1 –chaeta s no perpendicular to the dorsomedian line on abd. I–IV. Tubercle L on abd. III and IV with 4 and 7 chaetae respectively ( Fig. 12View FIGURES 11 – 21). Furca rudimentary with 8 microchaetae ( Fig. 21View FIGURES 11 – 21).Tubercles Di on abd. V fused, with chaetae Di 2 and Di 3 as Mc ( Figs 18–20View FIGURES 11 – 21). Chaetae L' and Vl on abd. V present. No cryptopygy. Chaetotaxy of legs as in Tab. 2 d. Tibiotarsi with chaetae B 4 and B 5 short. Claw without inner tooth.

Discussion. E. asiatica  differs from all other members of the genus in having its anterior eye located outside the tubercle Oc on head ( Fig. 11View FIGURES 11 – 21). Morphologically E. asiatica  is most similar to E. quadriseta Cassagnau & Péja, 1979 and E. reticulata ( Axelson, 1905)  from which it may be distinguished by the shape of long dorsal macrochaetae (in asiatica  fusiform, in quadriseta and reticulata  subcylindrical or cylindrical), the number of chaetae on head tubercle (L+So) (in asiatica  and reticulata  10; in quadriseta 9, chaeta So 2 absent), the presence/absence of male ventral organ on abdomen (in asiatica  and reticulata  absent, in quadriseta present), the presence/absence of microchaetae on furca rudimentary (in asiatica  present, in quadriseta and reticulata  absent), the presence/absence of free chaeta L on abd. IV (in asiatica  and reticulata  absent, in quadriseta present).

a) Cephalic chaetotaxy –– dorsal side b) Cephalic chaetotaxy –– ventral side

Group Number of chaetae Vi 6 Vea 4 Vem 3 Vep 4 Labium 11, 0x

c) Chaetotaxy of antennae d) Postcephalic chaetotaxy

TABLE 2. Chaetotaxy of Endonura asiatica sp. nov.:

Tubercle Number of chaetae Types of chaetae Names of chaetae
Cl 4 Ml Mc F G
Af 11 Ml Mc A, B C, D, E, O
Oc 3 Ml Mcc or mi Ocm, Ocp Oca
Di 2 Ml Mc Di1 Di2
De 2 Ml Mc De1 De2
Dl 6 Ml Mc Dl1, Dl5 Dl2, Dl3, Dl4, Dl6
(L+So) 10 Ml Mc Mcc or mi Mcc or me me L1, L4, So1 L2 So2 L3 So3–6

TABLE 2. Chaetotaxy of Endonura asiatica sp. nov.:

Tubercle Number of chaetae Types of chaetae Names of chaetae
Cl 4 Ml Mc F G
Af 11 Ml Mc A, B C, D, E, O
Oc 3 Ml Mcc or mi Ocm, Ocp Oca
Di 2 Ml Mc Di1 Di2
De 2 Ml Mc De1 De2
Dl 6 Ml Mc Dl1, Dl5 Dl2, Dl3, Dl4, Dl6
(L+So) 10 Ml Mc Mcc or mi Mcc or me me L1, L4, So1 L2 So2 L3 So3–6