Richtersius sp.

Richtersius sp. View in CoL [Ca1 MK214326 View Materials ]

Richtersius sp. 6 – Stec et al. 2020b.

Description

No information on this species morphology is available.

Reproductive mode

Gonochoric ( Stec et al. 2020b).

DNA sequences

– 18S: MK211387 View Materials ( Stec et al. 2020b)

– 28S: MK211385 View Materials ( Stec et al. 2020b)

– COI: MK214326 View Materials -8 ( Stec et al. 2020b)

– ITS2: MK211382 View Materials -3 ( Stec et al. 2020b)

Distribution

Genna Silana, Sardegna, Italy (40°09′04″ N, 9°30′23″ E; 1047 m a.s.l.). Moss (sample IT. 317 in Stec et al. 2020b).

Richtersius sp. [Ca2 KT778685 View Materials ]

Richtersius View in CoL Mongolia – Guidetti et al. 2016.

Richtersius sp. 2 – Stec et al. 2020b.

Description

In the newborns, many small cuticular pores (diameter 1–2 µm) with regular margins are present. Claw common tract shorter than half of the total claw length. The buccal tube walls are extremely enlarged after the stylet support insertions ( Guidetti et al. 2016). Additional morphometric data for this species are presented in Guidetti et al. (2016).

Reproductive mode

Gonochoric ( Guidetti et al. 2016).

DNA sequences

– 18S: KT778708 View Materials -10 ( Guidetti et al. 2016)

– 28S: KT778699 View Materials -701 ( Guidetti et al. 2016)

– COI: KT778683 View Materials -9 ( Guidetti et al. 2016)

Distribution

Mongolia (46°47.311′ N, 101°57.848′ E; 1790 m a.s.l.). Moss (samples C2592 and C 2595 in Guidetti et al. 2016).

Richtersius sp. [Ca3 GU237485 View Materials ]

Description

No information on this species morphology is available.

Reproductive mode

Unknown.

DNA sequences

– COI: GU237485 View Materials , GU339056 View Materials (unpublished).

Distribution

Unpublished, probably Asia.

Dichotomous key of the genus Richtersius

Here we provide a taxonomic key which include six nominal species that are currently recognized within the genus.

1. Egg with processes having proximal portion in shape of wide domes while distal portion elongated and slender; crown of thickenings distributed around the bases of the egg processes ....................... ........................................................................................... Richtersius mazepi Kiosya & Stec, 2022

– Egg different ..................................................................................................................................... 2

2. Egg bare diameter ≥170 µm; in newborns, pore density ≥ 60 pores/ 2500 µm 2 ................................ ............................................................................................... Richtersius coronifer ( Richters, 1903) View in CoL

– Egg bare diameter <170 µm; in newborns, pore density <60 pores/ 2500 µm 2 .............................. 3

3. In newborns, pore density ≥ 20 pore /2500 µm 2 ........... Richtersius ziemowiti Kayastha et al., 2020

– In newborns, pore density <20 pore / 2500 µm 2 ............................................................................... 4

4. In newborns, pore density ≥ 9 pore / 2500 µm 2 ........................................ Richtersius nicolai sp. nov.

– In newborns, pore density ≤ 7 pore / 2500 µm 2 ................................................................................. 5

5. Macroplacoid 1 pt> 13 .................................................... Richtersius tertius Pogwizd & Stec, 2022

– Macroplacoid 1 pt <13 ......................................................................... Richtersius ingemari sp. nov.