Proctodrilus antipai ( Michaelsen, 1891 )

Höser, Norbert, 2018, Interrelation of Proctodrilus species (Oligochaeta: Lumbricidae) with lessivage and layering in European soil profiles, Zootaxa 4496 (1), pp. 96-110 : 97-100

Proctodrilus antipai ( Michaelsen, 1891)

In total, 761 adult individuals were found at 48 localities.

• Barchfeld (DE), transect Werra floodplain. 50°47'N, 10°18'E. Interior edge of floodplain terrace closest to the river. Profile banded layering. 6 ind. at 40 cm depth, in h3 Ls3, Lu, above the Go.

• Immelborn (DE), transect Werra floodplain. 50°46'N, 10°18'E. Interior edge of floodplain terrace closest to the river. Profile banded layering. 12 ind. at 10–21 cm depth, in h3 Lts, close to layer boundary Lts/Ls3, above the Go.

• Döhlen (DE), transect Wiesengraben floodplain. 51°17'N, 12°12'E. Floodplain edge. 8 ind. at 7–15 cm depth, in h5 Lt. Höser (2015: Fig. 1 ).

• Markranstädt (DE), Renne floodplain. 51°18'N, 12°12'E. Floodplain edge. 2 ind. at 25 cm depth, in h4 Lts.

• Rampitz (DE), transect Bach floodplain. 51°18'N, 12°08'E. Floodplain edge. Profile repeatedly layered. 4 ind. at 5 cm depth, in slightly rust-mottled wet h5 Lts, at upper edge of the Sw-Ah-Gor above shell fragments.

• Friedensdorf (DE), Bach floodplain/spring channel. 51°21'N, 12°03'E. Floodplain centre. 8 ind. at 6–10 cm depth, in wet h4 Lts of the Ah.

• Tragarth (DE), Bach floodplain. 51°22'N, 12°02'E. Floodplain centre. 1 ind. in h4 Lt.

• Löpitz (DE), Bach floodplain. 51°22'N, 12°02'E. Floodplain centre. 1 ind. at 12 cm depth, in h4 Lt Ah, lying above the Gro.

• Ostrau (DE), Weisse Elster floodplain. 51°06'N, 12°12'E. Floodplain edge. Profile repeatedly layered. 1 ind. at 6 cm depth, in h4 Lt of uppermost layer, which was above a layer inhabited by P. tuberculatus .

• Kotteritz (DE), transect Pleisse floodplain. 50°58'N, 12°28'E. Floodplain edge. Profile layered in bands. 29 ind. at 16–27 cm depth, in h2 Lts, Lt, in zone showing conspicuous clay skins lying on a sand-containing layer; concentrated near layer boundary, which was also upper boundary of the intensively rust-mottled Go.

• Wilchwitz (DE), transect Pleisse floodplain. 50°59'N, 12°29'E. Floodplain edge. 4 ind. at 5–8 cm depth, in h3 Lt.

• Kraschwitz (DE), two transects Pleisse floodplain. 51°00'N, 12°29'E. Floodplain edge. 11 ind. at 15–25 cm depth in h3 Lt; at 2–14 cm depth in h4 Lt over rust-mottled and in places fully coloured Go.

• Windischleuba (DE), transect Pleisse floodplain. 51°01'N, 12°29'E. Floodplain edge. Profile layered in bands. 30 ind. at 10–40 cm depth, in h3 Lt outside fine-sand containing bands.

• Windischleuba (DE), transect Pleisse floodplain. 51°01'N. 12°28'E. Floodplain edge, foot of slope. 8 ind. at 30 cm depth, in h3 Lts at upper boundary of the clay-enriched fGro-Sd, partly fully coloured fGo-Sd, of buried profile.

• Pähnitz (DE), transect Pleisse floodplain. 51°02'N, 12°29'E. Floodplain edge, foot of slope. 16 ind. at 5–6 cm depth, in h4 Ts of the Ah above rust-mottled Gro.

• Pähnitz (DE), Pahnaholz, transect slope/stream floodplain. 51°02'N, 12°29'E. Floodplain edge. 7 ind. at 10 cm depth, in h4 Lts, at upper edge of the rust-mottled Go ( Höser 2012: Fig. 6).

• Plottendorf (DE), Kammerforst, transect steep-sided depressions. 51°03'N, 12°26'E. Head of valley, foot of slope. 2 ind. at 9 cm depth, in h4 Lts at boundary to fully rust-coloured Go, partly to rust-mottled Gro ( Höser 2012: Fig. 4).

• Plottendorf (DE), transect Pleisse/Gerstenbach floodplain. 51°03'N, 12°27'E. Between floodplain edge and centre. 6 ind. at 17–24 cm depth, on the lower h2 boundary of the Ah, which lies above the brown aB. In addition, in floodplain centre P. tuberculatus in underlying aB of the same profile ( Fig. 1 ).

• Treben (DE), transect Pleisse floodplain. 51°03'N, 12°27'E. Floodplain edge. 1 ind. at 12 cm depth, in h5 Lt, 1–2 cm over banked bog iron ore (Gmso).

• Serbitz (DE), transect Pleisse floodplain. 51°04'N, 12°27'E. Floodplain edge. 22 ind. at 9–20 cm depth, in h3 Lts/Lt of the Ah, at upper boundary of the rust-mottled Go and the aB closer to the river. The upper boundary of the aB is occupied by P. tuberculatus .

• Gaulis (DE), transect Pleisse floodplain. 51°11'N, 12°24'E. Floodplain edge. 10 ind. at 20–29 cm depth, in h2 Lt over the brown clay-skin-carrying aB, whose upper boundary is occupied by P. tuberculatus .

• Reichstädt (DE), valley-like depression, leading to Grossensteiner Sprotte floodplain. 50°56'N, 12°15' E. 3 ind. at 2–8 cm depth, in h2 Lt.

• Gimmel (DE), Blaue Flut floodplain. 50°56'N, 12°20'E. Floodplain centre. 3 ind. at 6–8 cm depth, in h4 Lt.

• Nöbden (DE), transect Blaue Flut floodplain. 50°56'N, 12°21'E. Floodplain centre. 1 ind. in h4 Lt.

• Rasephas (DE), transect Blaue Flut floodplain. 51°01'N, 12°27'E. Floodplain edge. 1 ind. at 20 cm depth, in wet h3 Lt of the Ah.

• Trebanz (DE), three transects Gerstenbach floodplain. 51°03'N, 12°27'E. Floodplain edge, foot of slope. Profile layered numerous times, at foot of slope in bandlike layers. 51 ind. mostly at 14–18 cm depth, at the outermost floodplain edge at 3–30 cm depth, in h4/5 Lt of the Ah, above aB or rust-mottled Go, both of them also harbouring P. tuberculatus in places. Clay skins present.

• Plottendorf (DE), two transects Gerstenbach floodplain. 51°03'N, 12°27'E. Floodplain edge. 18 ind. at 15–16 cm depth, in h4 Lt of the Ah-Go. In addition, towards floodplain centre at upper boundary of the immediately underlying aB, P. tuberculatus also occurs.

• Leinawald (DE), six transects Spannerbach floodplain. 51°00'N, 12°31'E. Floodplain edge. 113 ind. at 1–20 (mostly 1–8) cm depth, in wet h2 to h5 Lt and Tl of the Ah and in rather thin Sw above the Sd, often 2–8 cm above rust-mottled Gro, more rarely above Gor or Gr. Clay skins present ( Höser 2012: partly in Fig. 5).

• Pöppschen (DE), five transects Spannerbach floodplain. 51°00'N, 12°30'E. Floodplain edge, foot of slope. 29 ind. at 6–10 cm depth, in h3 to h5 Lt of the Ah, over clay skins and clay deposit, occasionally over rustmottled Gro-Sd ( Höser 2012: partly in Fig. 2).

• Deutsches Holz (DE), transect Klostergraben floodplain. 51°01'N, 12°30'E. Floodplain edge. Profile in bandlike layers. 42 ind. at 9–12 cm depth, in wet h2/4 Tl, concentrated at the upper boundary of the just 5 cm thick rust-mottled Go above Gr.

• Deutsches Holz (DE), two transects Klostergraben floodplain. 51°01'N, 12°30'E. Floodplain centre. Profile in bandlike layers. 23 ind. at 3–14 cm depth, in wet layered Tl, in places in h2/3 rust-mottled Go, where concentrated at the boundary to a fine-sand band; in places in the uppermost zone of the pale-coloured Go- Ah.

• Benndorf (DE), transect Wyhra floodplain. 51°03'N, 12°33'E. Floodplain edge, fossil meander. Profile partly in layers (Lt/Tl). 52 ind. In greater part of transect at 21–36 cm depth, in h2/3 Lt, at upper end of the Gro. In the area of fossil levee deposits at 28–52 cm depth, above the rust-coloured Go, and at the same time below a layer inhabited by P. tuberculatus ( Fig. 1 ). Closer to foot of slope in wet h3/4 Lt, often lying at the upper boundary of the soft ferrous hydroxide (limonite) precipitation of the Gso or over black sesquioxide concretions. Höser (2008: Fig. 2).

• Unteres Schildholz (DE), Heinersdorfer Bach/Eula floodplain. 51°09'N, 12°36'E. Floodplain edge. Profile with several layers. 6 ind. at 10 cm depth, in slightly gravelly wet h2 Ls3 of the Ah over intensively rustmottled Go.

• Beucha (DE), transect Eula floodplain. 51°09'N, 12°35'E. Floodplain edge. 23 ind. at 3–12 cm depth, in wet h4 Lts/Lt of the Sw-Ah,> 10 cm over Sd, in places over Go or Gor.

• Otterwisch (DE), Gösel floodplain. 51°12'N, 12°37'E. Floodplain edge. 1 ind. in h2 Lt of the Ah, over Gor.

• Störmthal (DE), Oberholz, two transects Oberholzgraben floodplain. 51°14'N, 12°30'E. Floodplain centre. Profile layered in parts. 23 ind. at 3–7 cm depth, in wet h3 Lt of the Ah and at rust-mottled upper boundary of the Ah-Go, in places above Ts, St and Gor, Gr, or rust-coloured Go.

• Mlékojedy (CZ), Labe (Elbe) floodplain. 50°32'N, 14°08'E. Migrating confluence with the Ohře. Profile with bandlike layers. 19 ind. at 3–8 cm depth, in h4 Ls3. The underlying layer is inhabited by P. tuberculatus . Höser (2015: Table 3).

• Lödderitz (DE), BDF Elbe floodplain. 51°54'N, 11°59'E. Fossil meander/undercut bank. 2 ind. in h2 Lu. Höser (2005: Fig. 2).

• Březno, Postoloprty (CZ), transect Ohře floodplain. 50°22'N, 13°44'E. Two floodplain terraces close to river. 5 ind. at 8–11 cm depth, in h4 Ls3 and h2 Lts ( Höser 2010).

• Břežany nad Ohři (CZ), transect Ohře floodplain. 50°25'N, 14°07'E. Floodplain centre. 8 ind. at 22–26 cm depth, in h3/4 Ls3 and Lts, mainly 1–2 cm above layer boundary to Sl.

• Doksany (CZ), Ohře floodplain. 50°27'N, 14°09'E. Fossil meander. 4 ind. at 6–20 cm depth, in h3 Lt.

• Dolánky nad Ohři (CZ), Ohře floodplain. 50°29'N, 14°09'E. Fossil meander. 1 ind. at 22 cm depth, in wet h3 Lt of the Ah-Go.

• Terezín (CZ), Ohře floodplain. 50°31'N, 14°09'E. Floodplain centre. Profile with bandlike layers. 4 ind. at 3–4 cm depth, in h3 Lt above Ls3.

• České Kopisty (CZ), Ohře floodplain. 50°31'N, 14°10'E. Floodplain centre. Profile with bandlike layers. 10 ind. at 2–8 cm depth, in wet h3 Lt above Tl.

• Săcămaş (RO), transect gorge. 45°54'N, 22°41'E. Edge of gorge. Profile layered several times. 4 ind. at 3–6 cm depth, in h4 Lts. In the same profile P. tuberculatus and P. opisthoductus also occur in separate underlying layers ( Fig. 1 ).

• Dobra (RO), transect Mureş floodplain. 45°55'N, 22°35'E. Floodplain edge. 5 ind. at 8–12 cm depth, in h4 Lt of the Ah.

• Groşi (RO), two transects in stream floodplain in Podişul Lipovei. 45°55'N, 22°15'E. Floodplain centre, foot of slope. 17 ind. at 3–12 cm depth, in h3 Lts of the Ah and Ah-Go with clay skins (floodplain); at 6–10 cm depth, in wet h3 Lts/Lt of the Sw-Ah with clay skins, reaching to the rust-mottled Go and in places the boundary of the Gr (foot of slope).

• Bata (RO), two transects Mureş floodplain. 46°02'N, 22°03'E. Floodplain edge and fossil meander. 104 ind. at 1–19 cm depth, in h4 Lt / Tl of the Ah, Sw-Ah, Ah-Go, and rust-mottled Go boundary; at 2–23 cm depth, in wet h3 Lt / Tl of the lead-grey Go-Ah, there reaching the Gr. Clay skins present.

Figures

FIGURE 1. Ecological species separation in the genus Proctodrilus: Soil profiles with two or three co-occurring species, each in a different layer. For further details see text. Bottom right: Generalized scheme of preferred occurrence of Proctodrilus species in the soil profile: close to layer boundaries and in the layer with finer particle size.