Table 1 Fusion of m chromosome with autosome pair or X chromosome

1

Acisoma panorpoides

Rambur, 1842

Nepal

13 m

Kiauta (1975)

Bangladesh

13 m

Dasgupta (1957)

Thailand

13 m

Kiauta and Kiauta (1983)

India

13 m

Dasgupta (1957); Handa and Batra (1980); Tyagi (1982); Handa et al. (1984); Walia and Sandhu (1998); Walia (2008)

12

Kaur (2016)

Presence of one extra large autosomal bivalent

2

Crocothemis servilia

(Drury, 1773)

Japan

13 m

Katatani (1987); Higashi and Kayano (1993); Higashi et al. (2001)

Nepal

13 m

Kiauta (1975); Kiauta and Kiauta (1982)

Philippines

13 m

Kiauta and Kiauta (1980)

Thailand

13 m

Kiauta and Kiauta (1983)

Taiwan

13 m

Higashi et al (2001)

India

13 m

Asana and Makino (1935); Makino (1935); Kichijo (1942); Ray Chaudhuri and Dasgupta (1949); Yadav (1979); Walia and Sandhu (1998); Walia (2008); Walia et al. (2010)

Japan

12

Omura (1955)

Neo-XY

12

Kiauta (1983)

Higashi et al. (2001)

Neo-XY

3

Elasmothemis cannacrioides

(Calvert, 1906)

Bolivia

12 m

Cumming (1964) as Dythemis cannacriodes Calvert, 1906

Brazil

11

Ferreira et al. (1979)

Presence of one extra large autosomal bivalent and large X chromsome

4

Erythrodiplax paraguayensis

(Förster, 1905)

Surinam

13 m

Kiauta (1979)

Bolivia

12

Cumming (1964)

5

Libellula depressa

Linnaeus, 1758

France

13 m

Kiauta (1973)

Croatia

13 m

Francovic and Jurecic (1986, 1989)

Russia

13 m

Perepelov et al. (1998)

Kuzenstova et al. (2018)

Belgium

12

Carnoy (1885)

England

12

Hogben (1921)

Ausria

12

Kiauta (1969b)

12, 13 m

Kiauta (1968b)

6

Micrathyria hypodydima

Calvert, 1906

Argentina

13 m

Agopian and Mola (1988)

Brazil

12

Souza Bueno (1982)

Presence of one large autosomal bivalent

7

Orthetrum brachiale

(Palisot de Beauvois, 1805)

Burkina Faso (Former Voltiac Republic)

13 m

Kiauta and Ochssee (1979)

Kenya

11

Kiauta (1969b, 1969c)

Presence of one large autosomal bivalent

8

Orthetrum luzonicum

(Brauer, 1868)

Nepal

13 m

Kiauta (1975)

India

13 m

Thomas and Prasad (1981)

India

13 m

Kiauta and Kiauta (1982, 1983)

India

13 m

Prasad and Thomas (1992)

India

12

Walia and Sandhu (2002)

Presence of one large autosomal bivalent

9

Orthetrum japnicum

(Uhler, 1858)

Nepal

13 m

Kiauta (1975) as Orthetrum japonicum internum McLachlan, 1894

Japan

13 m

Omura (1955) Orthetrum Japonicum internum McLachlan, 1894

India

12

Walia and Sandhu (2002) as Orthetrum japonicum internum McLachlan, 1894

Presence of largest X chromosome

10

Potamarcha congener (Rambur, 1842)

India

13 m

Tyagi (1982)

India

13 m

Prasad and Thomas (1992)

India

12

Sandhu and Walia (1995a, 1995b)

Presence of largest X –chromosome

11

Tholymis tillarga

(Fabricius, 1798)

Nepal

13 m

Kiauta and Kiauta (1982)

Thailand

13 m

Kiauta and Kiauta (1983)

India

13 m

Prasad and Thomas (1992)

India

12

Walia and Sandhu (2002)

Presence of largest X chromosome

India

12, 13 m

Kaur (2016)

Size of m chromosome is minute

12

Trithemis festiva

(Rambur, 1842)

Nepal

13 m

Kiauta (1975)

India

13 m

Prasad and Thomas (1992)

India

12

Walia and Sandhu (2002); Kaur (2016)

Presence of largest X chromosome