Diplopeltidae, Filipjev, 1918
publication ID |
https://doi.org/ 10.5852/ejt.2017.383 |
publication LSID |
lsid:zoobank.org:pub:8D18E64D-6E01-43CC-9A97-BD5C4D2160E1 |
DOI |
https://doi.org/10.5281/zenodo.3853259 |
persistent identifier |
https://treatment.plazi.org/id/1A10CE2E-C025-FFC7-E2B7-FC91FAA49547 |
treatment provided by |
Carolina |
scientific name |
Diplopeltidae |
status |
|
Key to genera of Diplopeltidae View in CoL
See Table 4 View Table 4 for additional diagnostic characters.
1. Amphidial fovea a transverse slit; cuticle with ten longitudinal ridges .... Edalonema Andrássy, 2007
– Amphidial fovea double-loop-shaped in male, unispiral in female .................. Belgopeltula View in CoL gen. nov.
– Amphidial fovea unispiral ................................................................................................................ 2
– Amphidial fovea loop-shaped ........................................................................................................... 4
2. Basal bulb absent; freshwater or terrestrial ........................................ Cylindrolaimus de Man, 1880 View in CoL
– Basal bulb present; marine ................................................................................................................ 3
3. Single anterior ovary ................................................................ Intasia Tchesunov & Miljutina, 2008 View in CoL
– Two ovaries (anterior and posterior) ....................................................... Southerniella Allgén, 1932 View in CoL
4. Oral opening shifted to the ventral body side ............................ Morlaxia Vincx & Gourbault, 1988
– Oral opening apical or shifted to the dorsal body side ..................................................................... 5
5. Basal pharyngeal bulb present; ovaries antidromously reflexed ............... Mudwigglus Leduc, 2013 View in CoL
– Basal pharyngeal bulb absent; ovaries outstretched ......................................................................... 6
6. Lateral alae present, in some species fused with the ventral limb of the amphid ............................... ................................................................................................................... Campylaimus Cobb, 1920 View in CoL
– Lateral alae absent ............................................................................................................................ 7
7. Amphid in a shape of rounded loop .................................................................................................. 8
– Amphid in a shape of elongated loop ............................................................................................. 10
8. Anterior body region abruptly narrowing; amphid at a distance equal to more than five labial region diameters from the anterior end ............................................. Metaraeolaimoides De Coninck, 1936 View in CoL
– Anterior body region cylindrical or subcylindrical; amphid at a distance equal to less than two labial region diameters from the anterior end ............................................................................................. 9
9. Buccal cavity cup-shaped; pronounced sexual dimorphism in the amphid size (large in males and small in females) .................................................................................. Pararaeolaimus Timm, 1961 View in CoL – Buccal cavity conical; no sexual dimorphism in the amphid size .......... Araeolaimus de Man, 1888 View in CoL
10. Cervical (paramphideal) setae absent; caudal glands open via three separate pores .......................... ................................................................................................................. Diplopeltula Gerlach, 1950 View in CoL
– Cervical (paramphideal) setae present; caudal glands open via common spinneret ........................11
11. Amphid located on a well-developed refractive subcuticular plate .................................................... .......................................................................................... Diplopeltis Cobb in Stiles & Hassal, 1905
– Refractive subcuticular plate absent .......................................... Pseudaraeolaimus Chitwood, 1951 View in CoL
Table 4. Selected diagnostic characters of genera of the family Diplopeltidae Filipjev, 1918 based on literature data supplemented with recent observations (modified after Tchesunov & Miljutina 2008).
Araeolaimus View in CoL | Belgopeltula View in CoL gen. nov. | Cylindrolaimus View in CoL | Campylaimus View in CoL | Diplopeltis | Diplopeltula View in CoL | Edalonema | |
---|---|---|---|---|---|---|---|
Cuticular ornamentation | absent | absent | absent | longitudinal striae present or absent | absent | longitudinal striae present or absent | ten longitudinal ridges |
Oral opening | apical | subdorsal | apical | subdorsal | apical | apical or subdorsal | apical |
Amphideal fovea shape | rounded loop | double loop in male, unispiral in female | unispiral | elongated loop | elongated loop | elongated loop | transverse slit |
Subcuticular plate supporting amphid | absent | absent | absent | absent | present | present or absent | absent |
Ocelli | present | absent | absent | absent | present | absent | absent |
Cervical setae | present | absent | absent | absent | present | absent | absent |
Buccal cavity | conical | minute | tubular | minute | minute | cylindrical | tubular |
Pharynx | with swelling at anterior ⅓ | with fusiform corpus and narrow postcorpus | cylindrical | cylindrical | cylindrical | cylindrical | cylindrical |
Female gonad | didelphic | didelphic | didelphic or monodelphic-prodelphic | didelphic | didelphic | didelphic | monodelphic- prodelphic |
Ovaries | outstretched | reflexed | outstretched | outstretched | outstretched | outstretched | outstretched |
Caudal glands open via | spinneret | spinneret | spinneret | spinneret | spinneret | three pores | caudal glands absent |
Intasia View in CoL | Metaraeolaimoides View in CoL | Morlaxia | Mudwigglus View in CoL | Pararaeolaimus View in CoL | Pseudaraeolaimus View in CoL | Southerniella View in CoL | |
Cuticular ornamentation | absent | absent | absent | absent | absent | absent | absent |
Oral opening | apical | apical | subventral | apical | apical or subdorsal | apical | apical |
Amphideal fovea shape | unispiral | rounded loop | rounded loop | elongated loop | rounded loop | elongated loop | unispiral |
Subcuticular plate supporting amphid | absent | absent | absent | absent | absent | absent | absent |
Ocelli | absent | present | absent | absent | absent | present or absent | absent |
Cervical setae | absent | present | absent | absent | absent | present | absent |
Buccal cavity | tubular | minute | minute | barrel-shape | cup-shaped | minute | tubular |
Pharynx | with basal bulb | subcylindrical | with basal bulb | with basal bulb | cylindrical | glandular posteriorly | with basal bulb |
Female gonad | monodelphic- prodelphic | didelphic | monodelphic-prodelphic | didelphic | didelphic | didelphic | didelphic |
Ovaries | outstretched | outstretched | outstretched | reflexed | outstretched | outstretched | outstretched |
Caudal glands open via | spinneret | ? | spinneret | three pores or spinneret | three pores | spinneret | spinneret |
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