Berosus, LEACH, 1817
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https://doi.org/10.1093/zoolinnean/zlaa105 |
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https://treatment.plazi.org/id/356287D9-FF9E-AF30-4CE1-FE9FFB296F85 |
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Felipe (2021-08-27 21:23:56, last updated by Plazi 2023-11-05 01:57:05) |
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Berosus |
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GENUS BEROSUS LEACH, 1817 View in CoL
Comments on karyotypes: Shaarawi & Angus (1991a) published the karyotype data of three species of the subgenus Berosus [ Berosus affinis Brullé, 1835 , Berosus luridus (Linnaeus, 1761) and Berosus signaticollis (Charpentier, 1825) ] and two species of the subgenus Enoplurus ( Berosus bispina Reiche & Saulcy, 1856 and Berosus fulvus Kuwert, 1888 ) and Angus et al. (1994) added Berosus (s.s.) hispanicus Küster, 1847 . The karyotype has 2 n = 16 + Xy p (♂), in all species except Berosus signaticollis which has an extra pair of autosomes 2 n = 18 + Xy p (♂). The karyotype of Berosus affinis may have an additional pair of B-chromosomes. The parachute configuration is shown by meiotic preparations of Berosus signaticollis . C-banding was not attempted; however, the chromosomes appear elongate and with small centromeric constrictions suggesting that the centromeric C-bands are small. Agarawal (1960b) presents data on mitosis and meiosis of Berosus (Enoplurus) indicus (Motschulsky, 1861) , providing the meioformula 8 + Xy p which agrees with newer data; the species identification by Agarawal (1960b) may be easily incorrect since no reliable identification key for Asian Berosus existed at that time.
TRIBE LACCOBIINI
Agarawal U. 1960 b. Chromosomes of Berosus indicus. Current Science 10: 404 - 405.
Angus RB, Aouad N, Shaarawi FAI. 1994. The karyotypes of Berosus (s. str.) affinis Brulle and B. (s. str.) hispanicus Kuster, with notes on the egg cocoons (Coleoptera: Hydrophilidae). Koleopterologische Rundschau 64: 133 - 139.
Shaarawi FAI, Angus RB. 1991 a. Chromosomal analysis of some European species of the genus Berosus Leach (Coleoptera Hydrophilidae). Koleopterologische Rundschau 61: 105 - 110.
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