Pseudosteineria Wieser 1956
Creators: name: Cidreira, Gabriel
name: Venekey, Virág
name: De Souza Alves, Orane F.
name: Kelmo, Francisco
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Adenophorea
Monhysterida
Monhysteridae
Pseudosteineria

description: Dichotomous identification key to valid species of the genus Pseudosteineria Wieser, 1956
(emended after Sun et al., 2019).
1 Six groups of subcephalic setae..................................................... P. longisetis sp. n. (Fig. 6A)
- Eight groups of subcephalic setae........................................................................ 2
2 Amphideal fovea anterior to or at the level of subcephalic setae groups........................................... 3
- Amphideal fovea posterior to subcephalic setae groups or not visible............................................ 9
3 Males with papilliform precloacal supplements......................................... P. ventropapillata (Fig. 6B)
- No precloacal supplements in males...................................................................... 4
4 Two small papillae or hillocks on ventral side of the tail in males.............................. P. anteferens (Fig. 6C)
- No caudal papillae or hillocks in males.................................................................... 5
5 Gubernaculum with dorsal apophysis..................................................................... 6
- Gubernaculum without dorsal apophysis or only with weakly developed apophysis................................. 7
6 Spicules broad and solid; gubernaculum complex with distal hooks............................. P. anticipans (Fig. 6D)
- Spicules slender; gubernaculum simple without distal hooks..................................... P. zhangi (Fig. 6E)
7 Groups of subcephalic setae with 5–6 or only 6 setae in each................................................... 8
- Groups of subcephalic setae with 7 setae in each; spicules 32–39 μm long................... P. sagittispiculata (Fig. 6F)
8 Groups of subcephalic setae with 6 setae in each; body length 1480 μm; spicules 56 μm long............ P. pavo (Fig. 6G)
- Groups of subcephalic setae with 5–6 setae in each; body length 962–997 μm; spicules 33–34 µm long................................................................................................. P. anteramphida (Fig. 6H)
9 Somatic setae very long, up to three body diameters....................................... P. paramirabilis (Fig. 6I)
- Somatic setae small, usually shorter than half body diameter.................................................. 10
10 Amphideal fovea difficult to observe..................................................................... 11
- Amphideal fovea clearly discernible, round or oval......................................................... 12
11 Spicules broad, unequal in length, the longer spicule is jointed.................................... P. sinica (Fig. 6J)
- Spicules slender, equal in length......................................................... P. coronata (Fig. 6K)
12 Spicules solid, unequal in length................................................... P. inaequispiculata (Fig. 6L)
- Spicules slender, equal in length........................................................................ 13
13 Gubernaculum with a prominent dorso-caudal apophysis....................................... P. scopae (Fig. 6M)
- Gubernaculum apophysis relatively short................................................................. 14
14 Males with three papilliform precloacal supplements.......................................... P. pulchra (Fig. 6N)
- No precloacal supplements in males....................................................... P. horrida (Fig. 6O)
description: Published as part of Cidreira, Gabriel, Venekey, Virág, De Souza Alves, Orane F. & Kelmo, Francisco, 2020, Description of Pseudosteineria longisetis sp. n. from northeastern Brazil with a review of the genus Pseudosteineria Wieser, 1956 (Nematoda: Xyalidae), pp. 354-370 in Zootaxa 4763 (3) on page 366, DOI: 10.11646/zootaxa.4763.3.2, http://zenodo.org/record/3758615