Research Article |
Corresponding author: Dariusz Skarżyński ( dariusz.skarzynski@uni.wroc.pl ) Academic editor: Louis Deharveng
© 2016 Adrian Smolis, Morteza Kahrarian, Agata Piwnik, Dariusz Skarżyński.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Smolis A, Kahrarian M, Piwnik A, Skarżyński D (2016) Endonura Cassagnau in Iran, with a key to species of the genus (Collembola, Neanuridae, Neanurinae). ZooKeys 553: 53-71. https://doi.org/10.3897/zookeys.553.6009
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Three new species of Endonura are described from Iran. Endonura dichaeta sp. n. can be recognized by an ogival labrum, head without chaetae O and E, chaeta D connected with tubercle Cl, tubercle Dl with five chaetae on head, absence of tubercles Di on thorax I and tubercle (Di+Di) of thorax V with 2+2 chaetae. Endonura ceratolabralis sp. n. is characterized by large body size, reduction of labral chaetotaxy, ogival labrum, head without chaeta O and fusion of tubercles Di and De on first thoracic segment. Endonura persica sp. n. is distinguished from its congeners by a nonogival labrum, absence of chaeta O, tubercles Dl and (L+So) with five and eight chaetae respectively and claw with inner tooth. The key to all species of the genus is given.
Springtails, taxonomy, new species
Endonura was established by
Terminology for the description follows that given in
Abbreviations used:
General morphology: abd. – abdomen, ant. – antenna, AOIII – sensory organ of antennal segment III, Cx – coxa, Fe – femur, Scx2 – subcoxa 2, T – tibiotarsus, th. – thorax, Tr – trochanter, VT – ventral tube.
Groups of chaetae: Ag – antegenital, An – chaetae of anal lobes, ap – apical, ca – centroapical, cm – centromedial, cp – centroposterior, d – dorsal, Fu – furcal, vc – ventrocentral, Ve or ve – ventroexternal, Vea – ventroexternoanterior, Vem – ventroexternomedial, Vep – ventroexternoposterior, Vel – ventroexternolateral, Vec – ventroexternocentral, Vei – ventroexternointernal, Vi or vi – ventrointernal, Vl – ventrolateral.
Tubercles: Af – antenno–frontal, Cl – clypeal, De – dorsoexternal, Di – dorsointernal, Dl – dorsolateral, L – lateral, Oc – ocular, So – subocular.
Types of chaetae: Ml – long macrochaeta, Mc – short macrochaeta, Mcc – very short macrochaeta, me – mesochaeta, mi – microchaeta, ms – s–microchaeta or microsensillum, S or s – chaeta s, bs – border s–chaeta on ant. IV, miA – microchaetae on ant. IV, iv – ordinary chaetae on ventral ant. IV, or – organite of ant. IV, brs – border s–chaeta on ant. IV, i – ordinary chaeta on ant. IV, mou – cylindrical s–chaetae on ant. IV („soies mousses”), x – labial papilla x, L’ – ordinary lateral chaeta on abd. V, B4, B5 – ordinary chaetae on tibiotarsi.
The specimens were cleared in Nesbitt’s fluid, subsequently mounted on slides in Swan’s medium and observed using a phase contrast microscope Nikon E600. Photographs were made using a camera Nikon D5100 mounted on a microscope mentioned above. Photographs were stacked using Helicon Focus 6.2.2. and prepared for publication using Adobe Photoshop CS3. Material is deposited in the Department of Invertebrate Biology, Evolution and Conservation, Institute of Environmental Biology, University of Wrocław, Poland.
Holotype: adult female on slide, Iran, Osmanevand area, near Golestan village (N33°55', E47°06', 1241 m a.s.l.), litter in oak forest, 13.XII.2013, leg. M. Kahrarian. Paratypes: female, two males and two juveniles on slides, same data as holotype.
Two females and male on slide, Iran, Osmanevand area, near Chelkooshk village (N34°03', E47°12', 1516 m a.s.l.), litter in oak forest, 31.I.2014, leg. M. Kahrarian; three juveniles on slide, Iran, Paveh county, near Shabankereh village (N34°52.978', E46°30.760', 1632 m a.s.l.), litter in oak forest, 20.I.2014, leg. M. Kahrarian; two females and juvenile, Iran, Kermanshah county, near Chahar zebra-e-oliya village (N34°13', E46°40', 1592 m a.s.l.), litter in oak forest, 24.I.2014, leg. M. Kahrarian.
The species name refers to rare feature within the genus - only two chaetae Di on each side of tubercle (Di+Di) of abdomen V.
Habitus typical of the genus Endonura. Dorsal tubercles present and well developed, except tubercles Di on th. I. 2+2 unpigmented eyes. Buccal cone long, labrum ogival. Head with chaetae A, B, C, D, F and G. Chaetae O and E absent. Tubercles Cl and Af separate. Tubercle Cl with chaetae D. Tubercles Dl and (L+So) on head with five and eight chaetae respectively. Tubercles De on th. II and III with three and four chaetae respectively. Tubercles L on abd. III and IV with three and six chaetae respectively. Abd. IV and V with eight and three tubercles respectively. Claw without inner tooth. Tibiotarsi with chaetae B4 and B5 short.
Habitus typical of the genus. Body length (without antennae): 0.75–1.55 mm (holotype 1.30 mm). Colour of the body white. 2+2 medium unpigmented eyes (Fig.
Types of dorsal ordinary chaetae. Macrochaetae Ml relatively long, strongly thickened, almost cylindrical, arc-like or straight, narrowly sheathed, feebly serrated, apically pointed (Figs
Head. Labrum ogival, with ventral sclerifications as in Fig.
Chaetotaxy of Endonura dichaeta sp. n.: Cephalic chaetotaxy–dorsal side.
Tubercle | Number of chaetae | Types of chaetae | Names of chaetae |
---|---|---|---|
Cl | 6 |
Ml
Mc |
F D, G |
Af | 6 |
Ml
Mc |
A B, C |
Oc | 3 |
Ml
Mc |
Ocm, Ocp Oca |
Di | 2 |
Ml
Mc |
Di1 Di2 |
De | 2 |
Ml
Mc |
De1 De2 |
Dl | 5 |
Ml
Mc Mcc mi |
Dl1, Dl5 Dl4 Dl2 Dl6 |
(L+So) | 8 |
Ml
Mc me |
L1, L4, So1 L2, So6 So3–5 |
Chaetotaxy of Endonura dichaeta sp. n.: Cephalic chaetotaxy–ventral side.
Group | Number of chaetae |
---|---|
Vi | 6 |
Vea | 3 |
Vem | 3 |
Vep | 4 |
labium | 11, 0x |
Segment, Group | Number of chaetae | Segment, Group | Number of chaetae adult |
---|---|---|---|
I | 7 | IV ap |
or, 8 S, i, 12 mou, 6 brs, 2 iv |
II | 11 | ||
III ve |
5 sensilla AO III | ||
5 | 8 bs, 5 miA | ||
vc | 4 | ca | 2 bs, 3 miA |
vi | 4 | cm | 3 bs, 1 miA |
d | 5 | cp | 8 miA, 1 brs |
Thorax, abdomen, legs. Body s–chaeta thin and smooth, shorter than nearby macrochaetae (Figs
Di |
Terga De |
Dl |
L |
Scx2 |
Cx |
Legs 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: 4–5 | Ve1 - | present | ||
abd. III | 2 | 3+s | 2 | 3 | Vel:4–5 | Fu:5–6me | 2–4mi | ||
abd. IV | 2 | 2+s | 3 | 6 | Vel: 4 | Vec: 2 | Vei: 2 | Vl: 4 | |
abd. V | (2+2) | 5+s | Ag: 2 | Vl: 1 | L’: 1 | ||||
abd. VI | 7 | Ve:13–14 | An: 2mi |
In general appearance (shape of dorsal chaetae, chaetotaxy of central area of head and dorsal side of thorax and abdomen, complete absence of pigmentation and absence of cryptopygy), E. dichaeta sp. n. strongly resembles E. tartaginenis Deharveng, 1980 described from Corsica. Nevertheless, both taxa differ in some essential characters, important from taxonomic point of view: presence/absence of chaetae E on head (dichaeta sp. n. absent, tartaginenis present), number of chaetae Dl on head (dichaeta sp. n. five, tartaginenis six), number of chaetae (L+So) (dichaeta sp. n. eight, tartaginenis nine), presence/absence of elementary tubercle EE on head (dichaeta sp. n. absent, tartaginenis present), presence/absence of tubercles Di on the first thoracic segment (dichaeta sp. n. absent, tartaginenis present), number of chaetae Di on abd. V (dichaeta sp. n. 2+2, tartaginenis 3+3) and presence/absence of tooth on claw (dichaeta sp. n. absent, tartaginenis present). In addition, the new species is characterized by only 2+2 antegenital chaetae (tartaginenis 3+3) and ogival labrum (unknown in tartaginenis), characters rarely observed within the genus.
Holotype: adult female on slide, Iran, Osmanevand area, near Markhor village (N33°53', E47°05', 1389 m a.s.l.), litter in oak forest, 13.XII.2013, leg. M. Kahrarian. Paratypes: 3 females on slide, same data as holotype.
Three females on slide, Iran, Osmanevand area, near Ghader marz village (N34°01.030', E47°12.415', 1682 m a.s.l.), litter in oak forest, 31.I.2014, leg. M. Kahrarian.
The species name refers to sharp labral apex which looks like a horn (“cera” in latin).
Habitus typical of the genus Endonura. Dorsal tubercles present and well developed. 2+2 eyes darkly pigmented. Buccal cone long. Head with chaetae A, B, C, D, E, F and G. Chaeta O absent. Tubercles Cl and Af separate. Tubercles Dl and (L+So) on head with six and nine chaetae respectively. Tuberles Di and De on th. I fused. Tubercles De on th. II and III with three and four chaetae respectively. Tubercles L on abd. III and IV with three and 6–7 chaetae respectively. Abd. IV and V with eight and three tubercles respectively. Claw without inner tooth. Tibiotarsi with chaetae B4 and B5 short.
Habitus typical of the genus. Body length (without antennae): 2.25–2.55 mm (holotype: 2.55 mm). Colour of the body bluish grey. 2+2 medium dark-pigmented eyes (Fig.
Types of dorsal ordinary chaetae. Macrochaetae Ml thickened, relatively long, arc-like or straight, narrowly sheathed, feebly serrated, apically pointed or rarely rounded (Figs
Head. Buccal cone very long. Labrum ogival, with ventral sclerifications as in Fig.
Chaetotaxy of Endonura ceratolabralis sp. n.: Cephalic chaetotaxy–dorsal side.
Tubercle | Number of chaetae | Types of chaetae | Names of chaetae |
---|---|---|---|
Cl | 4 |
Ml
Mc |
F G |
Af | 10 |
Ml
Mc |
A B, C, D, E |
Oc | 3 |
Ml
me |
Ocm, Ocp Oca |
Di | 2 |
Ml
Mc |
Di1 Di2 |
De | 2 |
Ml
Mc |
De1 De2 |
Dl | 6 |
Ml
Mc mi |
Dl1, Dl5 Dl2, Dl3, Dl4 Dl6 |
(L+So) | 9 |
Ml
Mc me |
L1, L4, So1 L2, L3, So3 So4–6 |
Chaetotaxy of Endonura ceratolabralis sp. n.: Cephalic chaetotaxy–ventral side.
Group | Number of chaetae |
Vi | 6 |
Vea | 3–4 |
Vem | 3 |
Vep | 4 |
Labium | 11, 0x |
Segment, Group | Number of chaetae | Segment, Group | Number of chaetae adult |
I | 7 | IV ap |
or, 8 S, i, 12 mou, 6 brs, 2 iv |
II | 12–14 | ||
III ve |
5 sensilla AO III | ||
5 | 8 bs, 5 miA | ||
vc | 4 | ca | 2 bs, 3 miA |
vi | 4 | cm | 3 bs, 1 miA |
d | 5 | cp | 8 miA, 1 brs |
Thorax, abdomen, legs. Body s–chaetae thin and smooth, shorter than nearby macrochaetae (Figs
Chaetotaxy of Endonura ceratolabralis sp. n.: Postcephalic chaetotaxwy.
Di |
Terga De |
Dl |
L |
Scx2 |
Cx |
Legs 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: 5–6 | Ve1 - | Present | ||
abd. III | 2 | 3+s | 2 | 3 | Vel:4–5 | Fu:3–6me | 0–2mi | ||
abd. IV | 2 | 2+s | 3 | 6–7 | Vel: 4 | Vec: 2 | Vei: 2 | Vl: 4 | |
abd. V | (3+3) | 5+s | Ag: 3 | Vl: 1 | L’: 1 | ||||
abd. VI | 7 | Ve: 13–14 | An: 2mi |
Because of the very characteristic long and pointed labrum, E. ceratolabralis sp. n. seems to be most similar to E. cretensis (Ellis, 1976) (Crete) and E. gracilirostris
Holotype: adult female on slide, Iran, Kermanshah area, near Ghaleh shahin village (N34°25.590', E05°12.415', 566 m a.s.l.), litter in willow shrubs, 7.IV.2014, leg. M. Kahrarian. Paratypes: two females, four males and four juveniles on slides, same data as holotype.
Female on slide, Iran, Kermanshah Province, Halashi County, near Sarfiroozabad village (N34°02', E47°10', 1624 m a.s.l.), litter in oak forest, 15.II.2014, leg. M. Kahrarian; female and male on slide, Iran, Osmanevand area, near Sarjoob village (N33°56', E47°08', 1240 m a.s.l.), litter in oak forest, 13.XII.2013, leg. M. Kahrarian.
The species name refers to the historic name of Iran, Persia.
Habitus typical of the genus Endonura. Dorsal tubercles present and generally well developed, only tubercles Di on th. I weakly differentiated. 2+2 large dark-pigmented eyes. Buccal cone rather short. Head with chaetae A, B, C, D, E , F and G. Chaeta O absent. Tubercles Cl and Af separate. Tubercles Dl and (L+So) on head with five and eight chaetae respectively. Tubercles De on th. II and III with three and four chaetae respectively. Tubercles L on abd. III and IV with four and 6–7 chaetae respectively. Abd. IV and V with eight and three tubercles respectively. Claw with inner tooth. Tibiotarsi with chaetae B4 and B5 long.
Habitus typical of the genus. Body length (without antennae): 0.75–1.90 mm (holotype: 1.10 mm). Colour of the body bluish grey. 2+2 large dark pigmented eyes (Fig.
Types of dorsal ordinary chaetae. Macrochaetae Ml thickened, relatively long, arc–like or straight, narrowly sheathed, feebly serrated, apically rounded or rarely pointed (Figs
Head. Buccal cone short. Labrum rounded, with ventral sclerifications as in Fig.
Chaetotaxy of Endonura persica sp. n.: Cephalic chaetotaxy–dorsal side.
Tubercle | Number of chaetae | Types of chaetae | Names of chaetae |
---|---|---|---|
Cl | 4 |
Ml
Mc |
F G |
Af | 10 |
Ml Mc Mc or Mcc |
B A, C, E D |
Oc | 3 |
Ml
Mc mi |
Ocm Ocp Oca |
Di | 2 |
Ml
Mcc |
Di1 Di2 |
De | 2 |
Ml
Mcc |
De1 De2 |
Dl | 5 |
Ml Mc or Mcc |
Dl1, Dl5 Dl2, Dl4, Dl6 |
(L+So) | 8 |
Ml Mc me or mi |
L1, L4, So1 L2 So3–6 |
Chaetotaxy of Endonura persica sp. n.: Cephalic chaetotaxy–ventral side.
Group | Number of chaetae |
---|---|
Vi | 6 |
Vea | 3–4 |
Vem | 3 |
Vep | 4 |
labium | 11, 0× |
Segment, Group | Number of chaetae | Segment, Group | Number of chaetaev adult |
I | 7 | IV ap |
or, 8 S, i, 12 mou, 6 brs, 2 iv |
II | 12–14 | ||
III ve |
5 sensilla AO III | ||
5 | 8 bs, 5 miA | ||
vc | 4 | ca | 2 bs, 3 miA |
vi | 4 | cm | 3 bs, 1 miA |
d | 5 | cp | 8 miA, 1 brs |
Thorax, abdomen, legs. Body s–chaetae fine and smooth, distinctly shorter than nearby macrochaetae (Fig.
Di |
Terga De |
Dl |
L |
Scx2 |
Cx |
Legs 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: 5–6 | Ve1 - | present | ||
abd. III | 2 | 3+s | 2 | 4 | Vel: 5 | Fu:5–10me | 0 mi | ||
abd. IV | 2 | 2+s | 3 | 6–7 | Vel: 4 | Vec: 2 | Vei: 2 | Vl: 4 | |
abd. V | (3+3) | 8+s | Ag: 3 | Vl: 1 | L’: 1 | ||||
abd. VI | 7 | Ve: 13–14 | An: 2mi |
In general appearance and presence of inner tooth on claw, characters rarely observed within the genus, E. persica sp. n. strongly resembles to E. dentifera
In 1982, Deharveng, in his PhD thesis, elevated Endonura to the generic level and prepared a key to the genus that comprised 23 species. Nowadays, including the taxa described herein, the genus contains 40 members and is the second largest of the tribe Neanurini, after Deutonura Cassagnau, 1979. Moreover, after the publication of Deharveng’s paper (date), a few species were redescribed and one taxon was synonymised (
1 | Head with fusion of tubercles Af and Cl | 2 |
– | Head with separation of tubercles Af and Cl | 7 |
2. | Chaeta O on head present | 3 |
Chaeta O on head absent | 4 | |
3 | Tubercles Di on th. I present and fused with De, tubercle (Di+Dl+L) on abd. V with nine chaetae | E. poinsotae Deharveng, 1980 (France, Corsica) |
– | Tubercles Di on th. I absent, tubercle (Di+Dl+L) on abd. V with seven chaetae | E. ichnusae Dallai, 1983 (Italy, Sardinia) |
4 | Tubercles De on abd. I–III with four chaetae | 5 |
– | Tubercles De on abd. I–III with three chaetae | E. granulata (Cassagnau & Delamare Deboutteville, 1955) (Lebanon) |
5 | Tubercles Di and De on th. I fused, cryptopygy strongly developed | E. gladiirostra Smolis & Kaprus’, 2003 (Israel) |
– | Tubercles Di and De on th. I separate, cryptopygy absent or weakly developed | 6 |
6 | Chaeta E on head present, Tubercle Dl on head with four chaetae | E. tyrrhenica Dallai, 1983 (Italy, Sardinia) |
– | Chaeta E on head absent, Tubercle Dl on head with six chaetae | E. pejai Deharveng, 1980 (France, Corsica) |
7 | Tubercle Af on head equal or shorter than tubercles Oc | 8 |
– | Tubercle Af on head longer than tubercles Oc | 9 |
8 | Labrum with ventral sclerifications ogival and without prelabral chaetae |
E. gracilirostris |
– | Labrum with ventral sclerifications nonogival and with prelabral chaetae | E. taurica (Stach, 1951) (Crimea) |
9 | Chaeta O on head present | 10 |
– | Chaeta O on head absent | 26 |
10 | Eyes completely absent | 11 |
– | Eyes present | 12 |
11 | Tubercles Di on th. I present | E. arbasensis Deharveng, 1979 (France, Spain) |
– | Tubercles Di on th. I absent | E. caeca (Gisin, 1963) (Bosnia and Herzegovina) |
12 | Anterior eye present and located outside tubercle Oc |
E. asiatica |
– | Anterior eye present or absent, if present located within tubercle Oc | 13 |
13 | Anterior eye present | 14 |
– | anterior eye absent | E. immaculata Deharveng, 1980 (France, Corsica) |
14 | Claw with inner tooth, tibiotarsi with long chaetae B4 and B5 | 15 |
– | Claw without tooth, tibiotarsi with short chaetae B4 and B5 | 16 |
15 | Tubercle Dl on head with three chaetae, tubercles Di on th. II–III with two chaetae | E. tetrophtalma (Stach, 1929) (Hungary) |
Tubercle Dl on head with five chaetae, tubercles Di on th. II–III with three chaetae | E. lusatica (Dunger, 1966) (Germany, Poland, Ukraine) | |
16 | Chaeta E on head absent | 17 |
– | Chaeta E on head present | 18 |
17 | Tubercle Cl on head with chaetae D, elementary tubercle DF present | E. colorata (Gama, 1964) (Portugal) |
– | Tubercle Cl on head without chaetae D, elementary tubercle DF absent | E. cantabrica (Deharveng, 1979) (Spain) |
18 | Tubercle Dl on head with six chaetae | 19 |
– | Tubercle Dl on head with less number of chaetae | 25 |
19 | Tubercles Di on head present | 20 |
– | Tubercles Di on head absent | E. dalensi Deharveng, 1979 (Andorra, France, Spain, Italy) |
20 | Body white | 21 |
– | Body blue or bluish–grey | 22 |
21. | Tubercle (L+So) on head with nine chaetae, macrochaetae thin and pointed | E. deharvengi Cassagnau & Péja, 1979 (Greece) |
– | Tubercle (L+So) on head with eight chaetae, macrochaetae thickened and blunt |
E. levantica |
22 | Tubercle De on th. III with two ordinary chaetae | E. gladiolifer (Cassagnau, 1954) (Algeria, Spain) |
– | Tubercle De on th. III with three ordinary chaetae | 23 |
23 | Tubercle Cl on head with chaetae D, furca rudimentary with microchaetae | E. alavensis Pozo & Simon, 1982 (Spain) |
– | Tubercle Cl on head without chaetae D, furca rudimentary without microchaetae | 24 |
24 | Tubercle (L+So) on head with nine chaetae, free chaeta L on abd. IV present | E. quadriseta Cassagnau & Péja, 1979 (Greece, Turkey, Crimea) |
– | Tubercle (L+So) on head with ten chaetae, free chaeta L on abd. IV absent | E. reticulata (Axelson, 1905) (Finland; Russia; Sweden; United States, Alaska) |
25 | Tubercle Dl on head with four chaetae, tubercles Di and De on th. I separate | E. occidentalis (Deharveng, 1979) (Spain) |
– | Tubercle Dl on head with three chaetae, tubercles Di and De on th. I fused | E. cretensis (Ellis, 1976) (Greece, Israel) |
26 | Cryptopygy strong and complete, tubercles of abd. VI invisible in dorsal view | E. ludovicae (Denis, 1948) (France, Corsica) |
– | Cryptopygy absent or weak, tubercles of abd. VI well or partially visible in dorsal view | 27 |
27 | Body bluish–grey | 28 |
– | Body white | 30 |
28 | Claw with inner tooth, labrum chaetotaxy 4/2, 4 | 29 |
– | Claw without inner tooth, labrum chaetotaxy 0/2, 2 | E. ceratolabralis sp. n. (Iran) |
29 | Tubercle Dl on head with five chaetae, tubercles Di on th. I present | E. persica sp. n. (Iran) |
– | Tubercle Dl on head with six chaetae, tubercles Di on th. I absent |
E. dentifera |
30 | Chaeta C on head absent | 31 |
– | Chaeta C on head present | 33 |
31 | Macrochaetae Di1 on abd. V distinctly thickened and club–like | E. baculifer Deharveng, 1979 (Portugal) |
– | Macrochaetae Di1 on abd. V slightly thickened and cylindrical | 32 |
32 | Eyes present, tubercles Di on th. I present | E. transcaucasica (Stach, 1951) (Georgia) |
– | Eyes absent, tubercles Di on th. I absent | E. carpatica Smolis, 2006 (Poland) |
33 | Tubercle Cl on head with chaetae D, elementary tubercle DF present | 34 |
– | Tubercle Cl on head without chaetae D, elementary tubercle DF absent | 35 |
34 | Chaeta E on head present, tubercle Dl on head with six chaetae | E. tartaginenis Deharveng, 1980 (France, Corsica) |
– | Chaeta E on head absent, tubercle Dl on head with five chaetae | E. dichaeta sp. n. (Iran) |
35 | Chaeta E on head present | E. urotuberculata Pomorski & Skarżyński, 2000 (Bulgaria) |
– | Chaeta E on head absent | 36 |
36 | Chaeta L4 on head free, eyes absent or present unpigmented | 37 |
– | Chaeta L4 within tubercle (L+So), eyes present and pigmented | 39 |
37 | Abd. V with two tubercles | E. incolorata (Stach, 1951) (Poland, Ukraine, Romania) |
– | Abd. V with three tubercles | 38 |
38 | Abd. IV with eight tubercles, macrochaetae Ml relatively short | E. tatricola (Stach, 1951) (Poland, Slovakia) |
– | Abd. IV with five tubercles, macrochaetae Ml long | E. dudichi (Loksa, 1967) (Hungary, Poland, Slovakia) |
39 | Tubercle Dl on head with six chaetae, tubercle L on abd. III with three chaetae | E. centaurea Cassagnau & Péja, 1979 (Greece) |
– | Tubercle Dl on head with five chaetae, tubercle L on abd. III with four chaetae | E. saleri Fanciulli & Dallai, 2008 (Italy) |
Considering the data presented here and those obtained from the literature (