Endonura dobrolyubovae, Smolis, Adrian & Kuznetsova, Nataliya, 2016

Smolis, Adrian & Kuznetsova, Nataliya, 2016, Remarkable diversity of the genus Endonura Cassagnau, 1979 (Collembola: Neanuridae: Neanurinae) in the Caucasus, Zootaxa 4200 (1), pp. 47-82 : 58-61

publication ID

https://doi.org/10.11646/zootaxa.4200.1.2

publication LSID

lsid:zoobank.org:pub:00D32877-F83A-4AE0-9139-894872F0EB72

DOI

https://doi.org/10.5281/zenodo.6090506

persistent identifier

https://treatment.plazi.org/id/702787BB-D058-F77F-FF5D-FF7D720E14EE

treatment provided by

Plazi

scientific name

Endonura dobrolyubovae
status

sp. nov.

Endonura dobrolyubovae sp. nov.

Figs 25–40 View FIGURES 25 – 33 View FIGURES 34 – 39 View FIGURE 40 , Tab. 4 View TABLE 4

Type material. Holotype: adult female on slide, Russia, Caucasus, Krasnodarsky Krai, Adygeya, Lagonaki Plateau ('Kamennoye More"), 1748 m alt., litter mountain coniferous forest ( Abies nordmanniana ), N44.08259 ˚, E40.00691 ˚, 5.VII.2014, leg. M. Potapov, N. Kuznetsova, A. Kremenitsa ( MSPU) GoogleMaps . Paratypes: 2 males on slides, same data as holotype ( DIBEC and MSPU) GoogleMaps .

Other material. Male on slide, Russia, Caucasus , Krasnodarsky Krai , up from Krasnaya Polyana, Aibga Range (ropeway Gornaya Karusel), northern slope, 2300 m alt., alpine zone, under Rhododendron caucasicum , N43.64175 ˚, E40.26222 ˚, 29.VI.2014, leg. M.Potapov, N. Kuznetsova, A. Kremenitsa GoogleMaps ; female and juvenile on slides, Russia, Caucasus , Krasnodarsky Krai, road between Tuapse and Khadyzhensk, surroundings of Gothski pass, about 300 m alt., litter from beech forest ( Fagus orientalis ) on a slope, N44.26951 ˚, E39.27032 ˚, 7.VI.2013, leg. M. Potapov, A. Kremenitsa GoogleMaps ; female on slide, Russia, Caucasus , Krasnodarsky Krai , up from Krasnaya Polyana , Achishkho Range, road to Khmelevskiye Lakes, beech forest, decaying bark on lying tree, N43.70180 ˚, E 40.23352 ˚, 30.VI.2014, leg. M. Potapov, N. Kuznetsova, A. Kremenitsa GoogleMaps ; female on slide, Russia, Caucasus , Krasnodarsky Krai , up from Krasnaya Polyana , eastern spurs of Achishkho Range , Khmelevskiye Lakes, observation deck “ Far ”, under Rhododendron caucasicum , 1913 m alt., N43.72683 ˚, E40.17008 ˚, 30.VI.2014, leg. M. Potapov, N. Kuznetsova, A. Kremenitsa; (slides housed in MSPU and DIBEC). GoogleMaps

Etymology. The new species is dedicated to our colleague Tatiana Dobrolyubova who has made a contribution to the study of Collembola of Caucasus.

Diagnosis. Habitus typical of the genus Endonura . Dorsal tubercles present and well developed. 2+2 eyes darkly pigmented. Buccal cone notably short, labrum nonogival. Head with chaetae A, B, O, C, D, F and G. Chaetae E absent. Tubercles Cl and Af separate. Tubercles Dl and (L+So) on head with 5 and 8 chaetae respectively. Tubercles Di and De on th. I not fused. 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. “Male ventral organ” present. Claw with inner tooth. Tibiotarsi with chaetae B4 and B5 relatively short.

Description. Habitus typical of the genus. Body length (without antennae): 1.25 (juvenile)– 2.48 mm (holotype: 1.65 mm). Colour of the body bluish grey. 2+2 medium dark pigmented eyes ( Fig. 27 View FIGURES 25 – 33 ).

b) Cephalic chaetotaxy–ventral side.

c) Chaetotaxy of antennae.

d) Postcephalic chaetotaxy.

Terga Legs

Di De Dl L Scx2 Cx Tr Fe T th. I 1 2 1 - 0 3 6 1 3 1 9 th. II 3 2+s 3+s+ms 3 2 7 6 12 19 th. III 3 3+s 3+s 3 2 8 6 1 1 1 8

Sterna

abd. I 2 3+s 2 3 VT: 4

abd. II 2 3+s 2 3 Ve: 4–5; chaeta Ve 1 present abd. III 2 3+s 2 4 Vel:5; Fu: 6–7 me, 0 mi

abd. IV 2 2+s 3 7 Vel: 4; Vec: 2; Vei: 2; Vl: 4

abd. V (3+3) 7+s Ag: 3; Vl: 1

abd. VI 7 Ve: 14; An: 2mi

Types of dorsal ordinary chaetae. Macrochaetae Ml relatively thin, long, straight or slightly arc–like, narrowly sheathed, feebly serrated, apically rounded or rarely pointed ( Figs 27, 31 View FIGURES 25 – 33 , 38, 39 View FIGURES 34 – 39 ); macrochaetae Mc and Mcc thin, straight, apically rounded or pointed; mesochaetae and microchaetae short, thin and pointed.

Head. Buccal cone notably short ( Fig. 25 View FIGURES 25 – 33 ). Labrum rounded, with ventral sclerifications nonogival as in Fig. 26 View FIGURES 25 – 33 . Labrum chaetotaxy 4/2, 4. Labium as Fig. 25 View FIGURES 25 – 33 . Maxilla styliform ( Fig. 32 View FIGURES 25 – 33 ), mandible thin with two basal and two apical teeth ( Fig. 33 View FIGURES 25 – 33 ). Chaetotaxy of antennae as in Figs 28–30 View FIGURES 25 – 33 and Tab. 4 View TABLE 4 c. Apical vesicle distinct trilobed ( Fig. 29 View FIGURES 25 – 33 ). S-chaetae of ant. IV of medium length and thickness. Chaetotaxy of head as in Tab. 4 View TABLE 4 a, b, and Figs 25, 27 View FIGURES 25 – 33 . Chaetae D free. Tubercle Af on head longer than tubercles Oc. Chaeta Ocp longer than A ( Fig. 27 View FIGURES 25 – 33 ). Tubercle Dl with 5 chaetae, chaeta Dl3 absent. Tubercle (L+So) with 8 chaetae, chaetae So3 and L3 absent ( Fig. 27 View FIGURES 25 – 33 ). Elementary tubercle BE present. Chaeta A shorter than B.

Thorax, abdomen, legs. Body s-chaetae fine and smooth, distinctly shorter than nearby macrochaetae ( Figs 31 View FIGURES 25 – 33 , 39 View FIGURES 34 – 39 ). Chaetotaxy of thorax and abdomen as in Tab. 4 View TABLE 4 d and in Figs 27, 31 View FIGURES 25 – 33 , 34, 39 View FIGURES 34 – 39 . Tubercles Di on th. I not differentiated ( Fig. 31 View FIGURES 25 – 33 ). Chaetae De2 on th. II–III and De3 on th. III free. Chaetae De3 on abd. I–III free ( Fig.31 View FIGURES 25 – 33 ).

The line of chaetae De1-chaeta s parallel to the dorsomedian line on abd. I–III. Furca rudimentary without microchaetae. Male with thick and forked chaetae (“male ventral organ”) on anal plates (abd. VI) and in groups: Ag (abd. V), Ve and Vl (abd. IV), Fu and Ve (abd. III, Figs 34, 37 View FIGURES 34 – 39 ). Tubercles Di on abd. V fused, with chaetae Di2 as Mc and Di3 as mi ( Fig. 39 View FIGURES 34 – 39 ). Chaetae Vl on abd. V present. Cryptopygy slightly developed. Chaetotaxy of legs as in Fig. 35 View FIGURES 34 – 39 and Tab. 4 View TABLE 4 d. Claw with distinct inner tooth ( Figs 35, 36 View FIGURES 34 – 39 ).

Remarks. E. dobrolyubovae sp. nov. is similar to E. persica Smolis et al., 2016 , by its short buccal cone and non ogival labrum, the same number of lateral chaetae Dl and (L+So) on head, the absence of chaeta O on head, the presence of the same free chaetae on dorsal side of th. and abd., and presence of toothed claws (Smolis et al. 2016). However, they are different in the length of chaeta Ocp (in dobrolyubovae distinctly longer than chaeta A, in persica slightly shorter than A), the presence/absence of elementary tubercles BE on head (in dobrolyubovae present, in persica absent), the presence/absence of chaetae E on head (in dobrolyubovae absent, in persica present) and the presence/absence of “male ventral organ” (in dobrolyubovae present, in persica absent).

Ecological note. The species was collected both in litter of different type of mountain forests ( Fig. 40 View FIGURE 40 ), and in alpine zone under rhododendron’s shrubs.

TABLE 4. Chaetotaxy of Endonura dobrolyubovae sp. nov.: a) Cephalic chaetotaxy – dorsal side.

Tubercle Number of chaetae Types of chaetae Names of chaetae
Cl 4 Ml Mc F G
Af 8 Ml Mc Mcc B A C, D
Oc 3 Ml mi Ocm, Ocp Oca
Di 2 Ml Mcc Di1 Di2
De 2 Ml Mcc De1 De2
Dl 5 Ml Mcc mi Dl1, Dl5 Dl4 Dl2, Dl6
(L+So) 8 Ml Mcc me L1, L4, So1 L2 So3–6

Kingdom

Animalia

Phylum

Arthropoda

Class

Entognatha

Order

Collembola

Family

Neanuridae

Genus

Endonura