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Metaphase chromosomes in the species used in this study. 1) – 2) D. funebris (female and male); 3) – 4) D. macrospina; 5) – 6) D. pavani; 7) – 8) D. gaucha; 9) – 10) D. virilis; 11) – 12) D. borealis; 13) – 14) D. micromelanica; 15) – 16) D. nigromelanica; 17) – 18) D. euronotus; 19) – 20) D. paramelanica; 21) – 22) D. melanica; 23) – 24) D. colorata; 25) – 26) D. robusta; 27) – 28) D. sordidula. Arrowheads indicate the identifiable sex chromosomes.
