SeqCode Registry
Register List https://seqco.de/r:33hdbh80 [2026]

Nanopusillus acidilobi gen. nov. sp. nov.

Submitted by St. John, Emily

Table 1: Complete list of names proposed in the current register list.

Proposed Taxon Etymology Description Parent Taxon Type Registry URL
Genus Nanopusillus [Na.no.pu.sil'lus] Gr. masc. n. nanos, a dwarf; L. masc. adj. pusillus, very small; N.L. masc. n. Nanopusillus, a very small member of the Nanoarchaeota
Wurch et al., 2016: "Locality. Cistern Spring pool (water and sediment slurry), in the Norris Geyser basin of YNP (latitude: 44.723; longitude: 110.70400). Diagnosis. coccoid cells, 100–300 nm in diameter, obligate ectosymbionts/parasites on the surface of the thermoacidophilic crenarchaeote Acidilobus. Occasional free cells can be observed in the co-culture but their viability is unknown. Optimum growth is in co-culture with its host at 82 C and pH 3.6. First isolated from Cistern Spring, a hot acidic spring in YNP. On the basis of single-cell genomics and metagenomic data, related strains or species that may use other Crenarchaeota as hosts are present in other acidic hot springs in YNP, at pH 2–6"
Nanobdellaceae Nanopusillus acidilobiTs seqco.de/i:55881
Species Nanopusillus acidilobiTs [a.ci.di.lo'bi] N.L. gen. n. acidilobi, of acidilobus, growth dependent on Acidilobus
Wurch et al., 2016: "Locality. Cistern Spring pool (water and sediment slurry), in the Norris Geyser basin of YNP (latitude: 44.723; longitude: 110.70400). Diagnosis. coccoid cells, 100–300 nm in diameter, obligate ectosymbionts/parasites on the surface of the thermoacidophilic crenarchaeote Acidilobus. Occasional free cells can be observed in the co-culture but their viability is unknown. Optimum growth is in co-culture with its host at 82 C and pH 3.6. First isolated from Cistern Spring, a hot acidic spring in YNP. On the basis of single-cell genomics and metagenomic data, related strains or species that may use other Crenarchaeota as hosts are present in other acidic hot springs in YNP, at pH 2–6"
Nanopusillus NCBI Assembly: GCA_001552015.1 Ts seqco.de/i:41509