Chironomus pseudothummi Strenzke, 1959

Michailova, Paraskeva, 2024, Markers in the polytene chromosomes of freshwater Chironomus Meigen (Diptera, Chironomidae) species, Zootaxa 5453 (4), pp. 511-537 : 530-531

publication ID	https://doi.org/10.11646/zootaxa.5453.4.3
publication LSID	lsid:zoobank.org:pub:B535A3FF-151C-4070-9BE7-2FE6E3238847
DOI	https://doi.org/10.5281/zenodo.11240673
persistent identifier	https://treatment.plazi.org/id/03D5FF23-FFBC-D84D-FF20-FF2FFBEBFF2D
treatment provided by	Plazi (2024-05-22 06:39:11, last updated 2024-11-26 06:41:01)
scientific name	Chironomus pseudothummi Strenzke
status

Treatment

Chironomus pseudothummi Strenzke View in CoL

The chromosome set is 2n = 8. AE chromosome is submetacentric, CD and BF —metacentric and chromosome G— telocentric ( Fig. 18 View FIGURE 18 ). The centromere regions of the chromosomes are characterized by dark thin bands. Chromosome G has three BRs (BRa, BRb, BRc). However, BRa is not always expressed. The NOR of this chromosome is near to the centromere region. The light band sequences between BRb and NOR in chromosome G are the maker of the species ( Fig. 18 View FIGURE 18 ). The band sequences of arm A are in inverted state (A2.2), also the “basic” sequences (A2.2) (1) of the arm are inverted. Five larvae were analyzed.

Collection sites: Sofia: South Park .

Modified “thummi” cytocomplex, with chromosome arm combinations AB CD GEF.

Figures

FIGURE 18. Polytene chromosomes of Chironomus pseudothummi. The numbers on the chromosome arms indicate the “basic”sequences.The large arrows show the localization of the centromere region. The small arrow on chromosome G indicates the marker sequences required for species identification. BR—Balbiani Ring, NOR—Nuclear Organizer Region. A, B, C, D, E, F, G—arms of the chromosomes. Scale bar, 10µm.