Endonura dudichi ( Loksa, 1967 ) Loksa, 1967

Smolis, Adrian, 2008, Redescription of four Polish Endonura Cassagnau, 1979 (Collembola, Neanuridae, Neanurinae), with a nomenclature of the ventral chaetae of antennae, Zootaxa 1858, pp. 9-36 : 25-30

Endonura dudichi ( Loksa, 1967) comb. nov.

Figs 40–49 , Tab. 4

Neanura dudichi Loksa, 1967: 289

Material examined. Hungary, West Carpathians, Aggtelek National Park, alder forest, litter with fine woody debris, 1988, leg. Gy. Traser, det. Gy.Traser, juvenile on slide. Poland, West Carpathians, Beskid Sądecki Mts., near Muszyna village, nature reserve "Las lipowy ObroŻyska", west slope of Mikowa Mt., 500–600 m alt., oak-hornbeam and beech-fir forest, under bark of decomposed log, decaying wood, 26–28.IV.1999, leg. A. Smolis, numerous specimens on slides; West Carpathians, Beskid Sądecki Mts., near Krynica, north slope of Dubne Mt., 850 m alt., Carpathian beech forest, decaying wood, 27.IV.1999, leg. A. Smolis, 3 females and juvenile on slides. Slovakia, Slovenský Raj National Park, mixed forest, under bark of decomposed logs, decaying wood, 1.V.2000, leg. A. Smolis, female and 3 juveniles on slides. Słowacja, National Park Slovenský Raj, rotting wood and under bark, 1.V.2000, leg. A. Smolis. Material is preserved in the collection of the Department of Biodiversity and Evolutionary Taxonomy, Wrocław University, Poland.

Diagnosis. Habitus typical of the genus Endonura . Dorsal tubercles present and well developed, except tubercles Di on th. I. 2 +2 unpigmented eyes present. Buccal cone rather short. Labral chaetotaxy 4/24. Mandible thin with 3 teeth. Head with 3 chaetae Oc, chaetae A, B, C and D. Chaeta O absent. Tubercles Dl and (L+So) on head with 6 and 10 chaetae respectively. Tubercles De on thoracic terga II and III with 3 and 4 chaetae respectively. Tubercles L on abd. III and IV with 3 and 6 chaetae respectively. Abd. IV and V with 5 and 3 tubercles respectively. Claw without inner tooth. Tibiotarsi with chaetae B4 and B5 short.

Redescription. Habitus typical of the genus. Body length (without antennae): females 1.5–1.7 mm, males 1.0–1.3 mm, I instars 0.5–0.8 mm. Colour of the body white. 2+2 small unpigmented eyes ( Figs 40–41 ).

Types of dorsal ordinary chaetae. Macrochaetae Ml thin, relatively long, straight, narrowly sheathed, gradually tapered and apically pointed ( Figs 40–41 , 44, 46 , 48 ); macrochaetae Mc and Mcc thin, straight, apically pointed; mesochaetae and microchaetae short, thin and pointed. Macrochaetae very similar in I instars and in adults. All macrochaetae feebly serrated. Same number and arrangement of chaetae in adults and I instars, except chaetotaxy of ant. IV (see: Tab. 4 c) and genital plate (complete absence of chaetae in first instars).

Head. Buccal cone short ( Fig. 43 ). Labrum rounded, with ventral sclerifications as in Fig. 45 . Labrum chaetotaxy 4/24. Chaetotaxy of labium as in Fig. 45 . Maxilla styliform, mandible thin tridentate. Chaetotaxy of antennae in adults and I instars as in Tab. 4 c. Apical vesicle distinct, simple. Sensilla S on ant. IV subequal, short and rather thick. Chaetotaxy of head as in Tab. 4 a, b, and Figs 41 , 43, 45 . Tubercles Cl and Af separate ( Fig. 41 ). Chaetae O and E absent. Chaetae D and L4 free. Tubercle Dl with 6 chaetae, chaeta Dl3 present ( Fig. 43 ). Elementary tubercle BE present ( Fig. 41 ). Chaeta A shorter than B.

Thorax, abdomen, legs. Body sensilla fine and smooth, shorter than nearby macrochaetae ( Figs 40 , 46 , 48 ). Chaetotaxy of th. and abd. as in Tab. 4 d and in Figs 40, 42 , 44, 46–49 . Tubercles Di on th. I present ( Fig. 40 ). Chaetae De3 on abd.I–III shorter than De2. Chaetae De2 on th. II–III and De3 on th. III connected with tubercle De. Chaetae De3 on abd. I–III connected with tubercle De ( Figs 40 , 46 ). The line of chaetae De1– sensillum perpendicular to the dorsomedian line on abd. I–IV ( Figs 46–48 ). Tubercle L on abd. III and IV with 3 and 6 chaetae respectively ( Fig. 49 ). One chaeta L on abd. IV free. Furca rudiment with 4–8 microchaetae ( Fig. 49 ). Tubercles De and Dl on abd. IV fused. Tubercles Di on abd. IV and V fused ( Fig. 48 ). Chaeta L' on abd. V present ( Fig. 49 ). Cryptopygy absent. Chaetotaxy of legs as in Tab. 4 d. Tibiotarsi with short chaetae B4 and B5. Claw without inner tooth.

Discussion. See: Discussion of E. tatricola .

Distribution. E. dudichi was recorded from Hungary (Western Carpathians, Loksa 1967, Traser 1999) and for the first time from Poland (Western Carpathians, Beskid Sądecki Mts.) and Slovakia (Western Carpathians, Slovenský Raj National Park).

Ecological remarks. A mountain saproxylic species, in Hungary found in cave and in litter of alder stand. In Poland and Slovakia, it occurs in beech and oak–hornbeam forests at lower altitudes. Found predominantly in humid rotting wood and under bark of decaying logs, sporadically in litter with fine woody debris. First instars were collected in April.

Remarks. Loksa (1967) described Neanura dudichi based on a one specimen collected from a Hungarian cave “Öz–Schachthöhle” (Aggtelek National Park, Carpathians). Traser (1999) recollected it in same area (Aggtelek National Park, juvenile in alder wood) and clasified this species to the genus Albanura . In 1999 and 2000, numerous specimens of the species from three localities in Polish and Slovak Carpathians were collected by me. A detailed examination of mentioned material (holotype probably has been lost, Gy. Traser pers. comm.) allowed to ascertain that the species belonged to genus Endonura (see: Discussion of Endonura ) and necessarily needed a modern redescription.

b) Cephalic chaetotaxy–ventral side.

c) Chaetotaxy of antennae.

5 8 bs, 5 miA 8 bs, 5 miA d) Postcephalic chaetotaxy.

Terga Legs

Di De Dl L Scx2 Cx Tr Fe T th. I 1 2 1 - 0 3 6 13 19 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 11 18

Sterna

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

abd. II 2 3+ s 2 3 Ve: 5 Ve1 - present

abd. III 2 3+ s 2 3 Vel: 5 Fu: 5–7 4–6 mi

me

abd. IV (2+2) 5+s 6 Vel: 4 Vec: 2 Vei: 2 Vl: 4 abd. V (3+3) 5+s Ag: 3 Vl: 1 L': 1 abd. VI 7 Ve: 12–13 An: 1mi

Figures

FIGURES 40 – 42. Endonura dudichi: 40, chaetotaxy and distribution of tubercles, adult (dorsal view); 41, chaetotaxy of central area of head; 42, chaetotaxy and distribution of tubercles on abdomen, adult (ventral view).

FIGURES 43 – 47. Endonura dudichi: 43, chaetotaxy of head (ventrolateral view); 44, tubercle (Di + Di) of abd. V; 45, chaetotaxy of labium and group Vi; 46, dorsal chaetotaxy of th. and abd. I; 47, scheme of position of sensillum and chaeta De 1 on abd. I – IV (dm –– dorsomedian line).

FIGURES 48 – 49. Endonura dudichi: 48, chaetotaxy of abd. IV – VI (dorsolateral view); 49, chaetotaxy of abd. II – IV (ventrolateral view).

Tables

TABLE 4. Chaetotaxy of Endonura dudichi: a) Cephalic chaetotaxy – dorsal side.

Tubercle	Number of chaetae	Types of chaetae	Names of chaetae
Cl	4	Ml Mcc or me	F G
Af	8	Ml Mc Mcc or mi mi	B A C D
Oc	3	Ml mi	Ocm, Ocp Oca
Di	2	Ml or Mc Mcc or mi	Di1 Di2
De	2	Ml Mcc or mi	De1 De2
Dl	6	Ml Mcc mi	Dl1, Dl5 Dl3, Dl4 Dl2, Dl6
(L+So)	10	Ml Mc me mi	L1, So1 L4 L3, So3–6 L2, So2