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The C-banded karyoptypes of Metasyrphus corollae Fabr. and Spherophoria scripta (L.) (Diptera, Syrphidae).

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Rozek M., Lachowska D., Marcos_Garcia M. A.

Folia Biologica

1996

vol. 44

11-13

The C-banded karyotypes of Metasyrphus corollae and Spherophoria scripta are presented. Their karyotypes show the same chromosome number 2n=8, the constitutive heterochromatin in both karyotypes has pericentromeric location, in M. corollae an additional C-band positive occuring on the third pair of autosomes. In the complement of the described species an exception is the whole euchromatin Y chromosome.

C-banding patterns in chromosome of four species of syrphid flies (Diptera, Syrphidae)

63%

Rozek M., Marcos Garcia A., Lachowska D.

Folia Biologica

1995

vol. 43

issue 3-4

107-109

An analysis was made of C-banding chromosomes of the following syrphid species (Diptera): Eristalinus aeneus (Scop.), Eristalis arbustorum (L.), Eristalis tenax (L.) and Myiatropa florea (L.).The results indicate that karyotypes of Eristalinus aeneus and Eristalis tenax have 2n=10 chromosomes, Eristalis arbustorum 2n= 12+10 microsomes and those of Myiatropa florea 2n=10 chromosomes.The examined karyotypes show only pericentromeric position of the constitutive heterochromatine. Eristalis arbustorum and Eristalis tenax have much larger C-positive blocks than Eristalis tenax and Myiatropa florea.In Eristalinu aeneus the secomd pair of autosomes is heteromorphic and the fourth onle is wholly euchromatic. In the sex chromosomes the C-positive segments has X while Y is always euchromatic.

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2 Folia Biologica

1 1996

1 1995

2 Lachowska D.

2 Rozek M.

1 Marcos Garcia A.

1 Marcos_Garcia M. A.

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The C-banded karyoptypes of Metasyrphus corollae Fabr. and Spherophoria scripta (L.) (Diptera, Syrphidae).

C-banding patterns in chromosome of four species of syrphid flies (Diptera, Syrphidae)