Endonura diminutichaeta, Smolis, Adrian & Kuznetsova, Nataliya, 2016
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Endonura diminutichaeta sp. nov.
Type material. Holotype: adult male on slide, Russia, Caucasus , Krasnodarsky Krai , up from Krasnaya Polyana, Aibga Range (ropeway Gornaya Karusel), nothern slope, 2300 m alt., alpine zone, under Rhododendron caucasicum , N43.64175 ˚, E40.26222 ˚, 29.VI.2014, leg. M. Potapov, N. Kuznetsova, A. Kremenitsa ( MSPU)GoogleMaps . Paratypes: female and male on slides, same data as holotype ( DIBEC and MSPU)GoogleMaps .
Other material. 2 females, male and 2 juveniles on slides, Russia, Caucasus , Krasnodarsky Krai, between Anapa and Novorossiysk, village Semigorsky, litter from broadleaved forest on canyon floor, N44.89285 ˚ , E37.61940 ˚, 5.VI.2013, leg. M. Potapov, A. Kremenitsa, M. Furgoł, Т. Maulana; male on slide, same data as holotypeGoogleMaps ; 2 juveniles on slides, Russia, Caucasus , Krasnodarsky Krai , up from Krasnaya Polyana, Achishkho Range (road to Khmelevskiye Lakes), litter from beech forest, 1800 m alt., 30.VI.2014, leg. M. Potapov, N. Kuznetsova, A. Kremenitsa; ( DIBEC and MSPU).
Etymology. The species name refers to notable morphological feature – unusual short chaeta Di1 on abd. IV.
Diagnosis. Habitus typical of the genus Endonura . Dorsal tubercles present and well developed. Eyes 2+2, large and dark pigmented. Buccal cone long, labrum ogival. Head with chaetae A, B, O, C, D, E, F and G. Tubercles Cl and Af separate. Tubercles Dl and (L+So) on head with 4–5 and 10 chaetae respectively. Tubercles Di and De on th. I 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. Claw without inner tooth. Tibiotarsi with chaetae B4 and B5 relatively long.
Description. Habitus typical of the genus. Body length (without antennae): 0.57 (juvenile)– 1.9 mm (holotype: 1.4 mm). Colour of the body bluish grey. 2+2 large dark-pigmented eyes ( Fig. 43View FIGURES 41 – 47).
Types of dorsal ordinary chaetae. Macrochaetae Ml slightly thickened, relatively long, straight or rarely arclike, narrowly sheathed, feebly serrated, apically rounded or pointed ( Figs 43, 46View FIGURES 41 – 47); macrochaetae Mc and Mcc thickened, straight, pointed or apically rounded; mesochaetae and microchaetae short, thin and pointed.
Head. Buccal cone long. Labrum ogival, with ventral sclerifications as in Fig. 42View FIGURES 41 – 47. Labrum chaetotaxy 4/2, 4. Labium as Fig. 41View FIGURES 41 – 47. Maxilla styliform, mandible thin with two basal and two apical teeth. Chaetotaxy of antennae as in Figs 44, 45View FIGURES 41 – 47 and Tab. 5 c. Apical vesicle distinct, trilobed. S-chaetae of ant. IV of medium length and relatively thin ( Fig. 44View FIGURES 41 – 47). Chaetotaxy of head as in Tab. 5 a, b, and Fig. 43View FIGURES 41 – 47. Tubercle Af on head longer than tubercles Oc. Chaeta D free. Elementary tubercles CD and BE present ( Fig. 40View FIGURE 40). Chaeta A shorter than B.
Thorax, abdomen, legs. Body s-chaetae thin and smooth, shorter than nearby macrochaetae ( Fig. 46View FIGURES 41 – 47). Chaetotaxy of thorax and abdomen as in Tab. 5 d and in Figs 40View FIGURE 40, 45View FIGURES 41 – 47. Tubercles Di on th. I differentiated and fused with De ( Fig. 43View FIGURES 41 – 47). Chaetae De3 on th. III and abd. I –III as Mcc. Chaetae De2 on th. II –III and De3 on th. III free. Chaetae De3 on abd. I –III free ( Fig. 46View FIGURES 41 – 47). The line of chaetae De1-chaeta s parallel to the dorsomedian line on abd. I –III. Chaetae Di 1 on abd. III and IV notably short, at least four times shorter than Di1 of abd. V ( Fig. 46View FIGURES 41 – 47). Tubercles Di on abd. V fused, with chaetae Di3 as mi. Furca rudimentary without microchaetae. Chaetae Vl on abd. V present. Male without modified chaetae (“male ventral organ”). Cryptopygy slightly developed. Chaetotaxy of legs as in Fig. 47View FIGURES 41 – 47 and Tab. 5 d. Tibiotarsi with chaetae B4 and B5 relatively long. Claw without inner tooth ( Fig. 47View FIGURES 41 – 47).
Variability. We observed two specimens, including holotype, with additional chaeta O ( Fig. 43View FIGURES 41 – 47). Ecological note. The type material of Endonura diminutichaeta sp. nov. and Endonura aibgai sp. nov. was collected within alpine zone, under Rhododendron caucasicum ( Fig. 48View FIGURE 48). The species was also collected in lower elevations, in broadleaved forests.
b) Cephalic chaetotaxy –ventral side.
c) Chaetotaxy of antennae.
d) Postcephalic chaetotaxy.
Di De Dl L Scx2 Cx Tr Fe T th. I 3 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
abd. I 2 3+s 2 3 VT: 4
abd. II 2 3+s 2 3 Ve: 5; chaeta Ve 1 present
abd. III 2 3+s 2 4 Vel: 3–5; Fu: 5–6 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: 13-14; An: 2mi
|Tubercle||Number of chaetae||Types of chaetae|
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