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5 Folia Biologica

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Karyological investigations on seven weevil species (Coleoptera, Curculionidae).

100%

Lachowska D. , Holecova M.

nr 3-4

111-114

Karyological studies were carried out on seven Palaearctic weevils. The following chromosome numbers were found in individual species, i.e. Otiorhynchus niger (F.), Phyllobius viridearis (Laich.), Phyllobius scutellaris Redt., Phyllobius calcaratus (F.), Polydrusus cervinus (L.), and Brachyderes incanus (L.) 2n=22, n%=10+Xyp, in Lixus elegantulus (Boh.) 2n=22, n%=21+Xyp. The heterochromosomes of all the examined species form, in the first meiotic metaphase, a typical parachute bivalent.

Chromosome complement and meiosis in eight bisexual species of weevil (Curculionidae, Coleoptera)

100%

Holecova M. , Rozek M. , Lachowska D.

Folia Biologica

1995

tom 43

nr 1-2

41-49

Karyological investigations were carried out on eight species of bisexual weevil belonging to five subfamilies, viz. - Otiorhynchinae, Brachyderinae, Cleoninae, Hylobiinae, Ceutorhynchinae.

Chromosome number in nine beetle species (Coleoptera: Bruchidae, Apionidae, Curculionidae)

86%

Lachowska D. , Holecov? M. , Ro?ek M.

Folia Biologica

1998

tom 46

41-46

Mitotic and meiotic chromosomes were studied in nine beetle species from three families, viz. Bruchidae: Bruchus pisorum L.) (2n=34, no%=16+Xy); Apionidae: Legaricapion pisi (F.) (2n=22, n%=10+Xyp); Curculionidae: Otiorhynchus opulentus Germ., Polydrusus marginatus Steph., Polydrusus viridicinctus Gyll., Liophloeus lentus Germ., Liophloeus gibbus Boh. (2n=22, n%=10+Xyp), Larinodontes obtusus Gyll. (2n=40, n%=19+Xyp), Zacladus geranii (Payk.) (2n=28, n%=13+Xyp). In the first meiotic metaphase the heterochromosomes of eight examined species formed a typical parachute bivalent. The chromosome number and sex determining system of seven species were described for the first time.

Chromosome survey in seven bisexual species of weevils (Coleoptera, Curculionidae)

86%

Lachowska D.

nr 3-4

111-113

Karyological details were studied in males of seven weevil species. The following number of chromosomes were found in individual species: 2n=32, n_=15+Xyp in Gymnetron tetrum (F.) and Gymnetron smreczynski Fremuth, 2n=44, n_=21+Xyp in Cionus tuberculosus (Scop.), 2n=38, n_=18+Xyp in Cionus hortulanus (Geoffr.), Cionus ganglbaueri Wingelm. and Cionus nigritarsis Reitt., 2n=42, n_=20+Xyp in Cionus olivieri Rosensch. In the first meiotic metaphase the heterochromosomes of all the examined species formed a typical parachute bivalent. The chromosome number and sex determining system were described for the first time.

Karyological notes on three weevil species from Armenia (Coleoptera, Curculionidae, Cleoninae)

72%

Holecova M. , Rozek M. , Karagyan G.

Folia Biologica

2000

tom 48

nr 1-2

25-27

Karyological studies were carried out on three Armenian weevil species from the subfamily Cleoninae. The following chromosome numbers were found in individual species: 2n = 38, n% = 18+Xyp in Menecleonus anxius (Gyllenhal, 1824), 2n=40, n% = 19+Xyp in Conorhynchus nigrivittis (Pallas, 1781) and 2n = 44, n% =21+Xyp in Lixus iridis Olivier, 1807. The heterochromosomes of all the examined species form, in the first meiotic metaphase, a typical parachute bivalent.