Aquattuor Frederiksen 2013
Creators: name: Enghoff, Henrik
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Spirostreptida
Odontopygidae
Aquattuor

description: Key to the species of Aquattuor (males)
1. Palette (pa) of gonopods elongate, considerably to much longer than broad (Figs 11–12; Enghoff & Frederiksen 2015: figs 6–7); first pair of legs with a distal prefemoral lobe (Figs 5, 6 A–C); 48+ podous rings, diameter> 1.7 mm ..................................................................................................... 2
– Palette as long as broad or slightly longer; first pair of legs without a distal prefemoral lobe (as in Fig. 3); diameter <1.9 mm ............................................................................................................... 4
2. Palette (pa) not clearly delimited by lateral (li) and mesal (mi) incisions (Fig. 12A); tarsal setae of first pair of legs much shorter than tarsal setae of normal walking legs (Fig. 8C) ............................. .................................................................................................... A. mollilobus sp. nov. (Udzungwa)
– Palette delimited by lateral and mesal incisions (e.g., Fig. 11A); tarsal setae of first pair of legs ca of same length as tarsal setae of normal walking legs (Fig. 8B) .......................................................... 3
3. 53–54 podous rings, diameter> 1.9 mm; anterior margin of telomere with a triangular tooth (Enghoff & Frederiksen 2015: fig. 6A, tt) ............................... A. major Enghoff, 2015 (Udzungwa)
– 50–52 podous rings; anterior margin of telomere without a triangular tooth ..................................... ............................................................................................ A. longipala Enghoff, 2015 (Udzungwa)
4. Subdistal part of telomere almost straight, parallel to coxa; telomere tip bent abruptly laterad (Enghoff & Frederiksen 2015: fig. 11); 50–52 podous rings, diameter 1.6–1.8 mm .......................... ............................................................................... A. denticulatus Frederiksen, 2013 (E Usambara)
– Telomere describing a more complex curve ..................................................................................... 5
5. Gonopod coxa without lateral and mesal incisions; telomere tip flattened, smooth (Figs 14–15) ..... ........................................................................................................... A. nguruensis sp. nov. (Nguru)
– Gonopod coxa with lateral (li) and mesal (mi) incisions; telomere tip microspiculate or with serrated margins .............................................................................................................................................. 6
6. Telomere describing a ca 360° curve, curving in three dimensions; telomere tip with coarsely laciniate margins, but surface not microspiculate (Enghoff & Frederiksen 2015: fig. 9) ................... ......................................................................................... A. stereosathe Enghoff, 2015 (Udzungwa)
– Telomere describing a ca 270° curve, curving almost in one plane only; telomere tip more or less microspiculate ................................................................................................................................... 7
7. Telopodites of first pair of legs only represented by prefemur; basal telomeral lamella (btl) forming a subspherical chamber with a spinose, lid-like flap (Fig. 17) ........................................................... ..................................................................................... A. udzungwensis Enghoff, 2015 (Udzungwa)
– Telopodites of first pair of legs fully developed; basal telomeral lamella without a spinose, lid-like flap .................................................................................................................................................... 8
8. <49 podous rings; meso-basal lobe of gonopod palette indistinct (Enghoff & Frederiksen 2015: fig. 5)................................................................................... A. submajor Enghoff, 2015 (Udzungwa)
–> 48 podous rings; meso-basal lobe (mbl) of gonopod palette well-developed (Enghoff & Frederiksen 2015: fig. 10; Enghoff 2016: fig. 7) .................................................................................................. 9
9. Diameter> 1.5 mm. Prefemoral processes of first pair of legs subtriangular (Fig. 3 A–C) ................ .......................................................... A. fasciatus (Attems, 1896) (Zanzibar, Rubeho Mts, Mt Vula)
– Diameter <1.7 mm. Prefemoral processes of first pair of legs finger-shaped (Fig. 3 D–I) ................ ..................................... A. claudiahempae Enghoff & Frederiksen, 2015 (Udzungwa, Kilimanjaro)
description: Published as part of Enghoff, Henrik, 2020, A mountain of millipedes VIII. The genus Aquattuor Frederiksen, 2013 revisited - a new species from the Udzungwa Mts, Tanzania, another from the Nguru Mts, and introduction of the first pair of male legs as a source of taxonomic characters (Diplopoda, Spirostreptida, Odontopygidae), pp. 1-32 in European Journal of Taxonomy 626 on pages 28-29, DOI: 10.5852/ejt.2020.626, http://zenodo.org/record/3754989