Limnohydrobius, REITTER, 1909

Angus, Robert B, Sadílek, David, Shaarawi, Fatma, Dollimore, Hayley, Liu, Hsing-Che, Seidel, Matthias, Sýkora, Vít & Fikáček, Martin, 2021, Karyotypes of water scavenger beetles (Coleoptera: Hydrophilidae): new data and review of published records, Zoological Journal of the Linnean Society 192 (3), pp. 958-958 : 958-

GENUS LIMNOHYDROBIUS REITTER, 1909

( FIG. 5A–E )

Material examined: Limnohydrobius convexus (Brullé, 1835) : 2 spec. ( BMNH): France, Corsica, R . Angus lgt.; 2 spec. ( BMNH): Spain, Menorca, G. Foster lgt. ( BMNH) .

Karyotype: 2 n = 16 + Xy(♂).Chromosomes1,3–5,8and X showing weak centromeric C-bands. Chromosomes 1–6 metacentric, 7, 8 and X submetacentric with X large, about as long as chromosome 5.

Note: Limnohydrobius was recently separated from Hydrobius based on DNA-based phylogenetic data ( Short et al., 2017); previously Limnohydrobius species were classified under the latter genus (e.g. Hansen, 1999).

Figures

Figure 5. Karyotypes of the Hydrobiusini. A–D, Limnohydrobius convexus: (A–B) mitosis, midgut; (C–D): testis, prometaphase. F–J, Limnoxenus niger: (F–H) midgut; (I–J) meiotic metaphase I, testes. A–C, E–F, I, without treatment. D, G, H, J, C-banded. Habitus figures: (E) Limnohydrobius convexus; (K) Limnoxenus niger.