Endonura taurica (Stach, 1951)

Smolis, Adrian, Skarżyński, Dariusz, Pomorski, Romuald J. & Kaprus’, Ighor J., 2007, Redescription of Endonura taurica (Stach, 1951) and E. quadriseta Cassagnau & Péja, 1979, and description of two new species of the genus Endonura Cassagnau, 1979 (Collembola: Neanuridae: Neanurinae) from the Crimea (Ukraine), Zootaxa 1442, pp. 19-35 : 20-24

Endonura taurica (Stach, 1951)

Figs 1–14 , Tab. 1

Biloba taurica: Stach 1951: 34

Neanura taurica: Dunger 1974: 14

Material examined. 3 adult females and juvenile; originally labelled “Krym Rezerwat”, VI–X.1929, leg. W. Bukowski, det. J.Stach ( ISEA). Other material. Female on slide, leaf litter in beech forest, ca. 800 m a.s.l., valley of Avunda River, Partyzans’ke near Gurzuf, Crimea, Ukraine, 10.IX.1997, leg. R. J. Pomorski, D. SkarŻyński, I. Kaprus’. 3 adult females and male on slides, leaf litter on mountain meadow, Nikits’kyi Pereval, ca. 1450 m a.s.l., neighborhood of Jalta, Crimea, Ukraine, 12.IX.1997, leg. R. J. Pomorski, D. SkarŻyński, I. Kaprus’. Adult female and juvenile on slide, soil and litter in mixed forest, Jaltyns'kyi Reserve, neighborhood of Jalta, Crimea, Ukraine, 11.ix.1997, leg. R. J. Pomorski, D. SkarŻyński, I. Kaprus’ ( ZIWU).

Diagnosis. Habitus typical of the genus Endonura . Dorsal tubercles present, well developed. 2+2 eyes present. Buccal cone not elongated, wide. Labral chaetotaxy 4/2, 4. Mandible strong with 4 teeth. Head with 3 chaetae Oc, chaetae A, B, C, D, E (chaeta O absent). Tubercle (L+So) on head with 9 chaetae. Tubercles De on thoracic terga II and III with 3 and 4 chaetae respectively. Tubercles L on abd. III and IV with 4 and 6–7 chaetae respectively. Claw with or without inner tooth. All tibiotarsi with long chaetae B4 and B5.

Redescription. Habitus typical of the genus ( Fig. 1 ). Body length (without antennae) 0.78–1.38 mm. Colour of the body greyish-blue. 2+2 medium, dark-pigmented eyes.

Types of dorsal ordinary chaetae: macrochaetae Ml and Mc thickened, narrowly sheathed, feebly serrated and not pointed ( Figs 1 , 13–14 ); mesochaetae thin and pointed.

Number of other cephalic chaetae: Vi, 6; Ve, 11; labrum, 4/2, 4; labium, 11, 0x; ant. I, 7; ant.II, 11; ant. III, 17+5s; ant. IV, 8S+i +or+12mou.

b) Postcephalic chaetotaxy.

Sterna

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

abd. II 2 3+ s 2 3 Ve: 4–6 Ve1 present Head. Buccal cone short and wide ( Fig. 2 ). Labrum chaetotaxy 4/2, 4 ( Fig. 3 ), ventral sclerifications as in Fig. 2 . Chaetotaxy of labium as in Fig. 2 and Tab. 1 . Maxilla slender with two small apical teeth at apex ( Fig. 5 ). Mandible strong, with 2 basal and 2 apical teeth, the subapical one very small ( Fig. 4 ). Chaetotaxy of antennae as in Tab. 1 . Apical vesicle distinct, trilobed. S-chaetae subequal, long and moderately thickened. Chaetotaxy of head as in Figs 1–2 , 7–8 and Tab. 1 . Chaeta D free ( Fig. 8 ) or connected with tubercle Cl ( Figs 1 , 7 ).Tubercle Af wide ( Fig1 , 7–8 ), chaeta O absent. Tubercle (L+So) with 9 chaetae (chaeta So2 absent).

Thorax, abdomen, legs. Chaetotaxy of th. and abd. as in Figs 1, 6 , 14 and Tab. 1 . Tubercles Di on th.I present or absent ( Fig. 1 ). Tubercles L on abd. III and IV with 4 and 6–7 chaetae respectively ( Fig. 6 ). Cryptopygy absent. Chaetotaxy of legs as in Figs 9–12 and Tab. 1 . Claw with or without small inner tooth ( Figs 9– 12 ). All tibiotarsi with long chaetae B5 and B4.

Discussion. (see discussion of E. gracilirostris sp. nov.)

Remarks. E. taurica was briefly described from the Crimea (Alushta reserve forest) by Stach (1951) and redescribed by Dunger (1974). Since both mentioned descriptions provided poor information on chaetotaxy we decided to make a modern redescription of this species based on extensive material (including Stach’s specimens).

Figures

FIGURES 1 – 6. Endonura taurica: 1, habitus and dorsal chaetotaxy; 2, chaetotaxy of labium and group Vi; 3, chaetotaxy of labrum; 4, mandible; 5, maxilla; 6, ventral chaetotaxy of abd. III – VI.

FIGURES 7 – 14. Endonura taurica: 7, chaetotaxy of tubercles Cl and Af on head; 8, dorsal chaetotaxy of head; 9, tibiotarsus and claw I (dorsolateral view); 10, tibiotarsus and claw I (ventrolateral view); 11, tibiotarsus and claw III (dorsolateral view); 12, tibiotarsus and claw III (ventrolateral view); 13, chaeta Di 1 of abd. V; 14, dorsal chaetotaxy of abd. IV – VI.

Tables

TABLE 1. Chaetotaxy of Endonura taurica. a) Cephalic chaetotaxy.

Tubercle	Number of chaetae	Types of chaetae	Names of chaetae
Cl	4	Ml Mc	F G
Af	11	Ml Mc Mcc me	B A,O C,D E
Oc	3	Ml Mc me	Ocm Ocp Oca
Di	2	Ml Mcc	Di1 Di2
De Dl	2 6	Ml Mcc Ml Mc Mcc me	De1 De2 Dl1,Dl5 Dl4 Dl2,Dl3 Dl6
(L+So)	9	Ml Mc me	L1,L4,So1 L2 L3,So3–6