Aquarius adelaidis ( Dohrn, 1860 )

Cianferoni, Fabio, Saleem, Rukhshanda, Afsheen, Sumera & Zia, Ahmed, 2021, The water striders of Pakistan (Hemiptera: Heteroptera: Gerridae): new records from Punjab and first checklist for the country, Zootaxa 4996 (3), pp. 469-491 : 472

Aquarius adelaidis ( Dohrn, 1860)

Gerris argentata Spinola 1837: 65 (preoccupied by Gerris argentatus Schummel, 1832 ).

Gerris adelaidis Dohrn 1860: 408 .

Gerris spinolae Lethierry & Severin 1896: 63 (new name for Gerris argentata Spinola, 1837 ). Syn. Lundblad (1933: 372).— Pakistan: Pruthi (1933: 102. Punjab Province, Jhelum District, Chalisa).

Aquarius adelaidis: Andersen 1990: 61 .— Pakistan: Buzzetti et al. (2006: 40. Sindh Province, Thatta District, Keenjhar Lake).

Material examined: Gujranwala District: Upper Chenab canal, Nandipur, Gujranwala, 32.254099° N 74.269467° E, 24.X.2016, 1 ♂, ♀ apt.; Upper Chenab canal, Master City Housing Scheme, Gujranwala, 32.130067° N 74.214012° E, 30.X.2016, 1 ♀ macr.; Nullah Palkhu, Grand Trunk Road Wazirabad, 32.449509° N 74.112278° E, 11. V.2016, 2 ♀ macr.; idem, 1 ♂, 1 ♀ macr., det. FC ( CFC). Gujrat District: Upper Jhelum canal near Pathan Colony , Kharian , 32.719544° N 73.795622° E, 18.XII.2016, 2 ♀ macr.; idem, 24. VI .2018, 2 ♂. 3 ♀ macr.; Upper Jhelum canal near Village Jaura, Kharian , 32.654499° N 73.816865° E, 13.VIII.2017, 1 V instar nymph ♀, det. FC ( CFC) ; idem, 24. VI .2018, 1 ♂, 5 ♀ macr.; Upper Jhelum canal Grand Trunk Road Sarai Alamgir , 32.890852° N 73.768194° E, 16.VII.2017, 2 ♂ macr.; idem, 24. VI .2018, 2 ♂, 2 ♀ macr.; Upper Jhelum canal near Simbli Sharif Road Sarai Alamgir , 32.865010° N 73.713452° E, 18.XII.2016, 1 ♂ macr.; idem, 24. VI .2018, 5 ♂, 3 ♀ macr.; River Jhelum, Grand Trunk Road , 32.917846° N 73.723696° E, 11.XII.2016, 4 ♂, 4 ♀ macr., 5 ♂, 6 ♀ brach.; idem, 16.VII.2017, 7 nymphs ; idem, 13.VIII.2017, 2 ♂, 3 ♀ macr., 2 ♂, 2 ♀ brach .; idem, 17.IX.2017, 3 ♂, 4 ♀ macr., 3 ♀ brach .; idem, 2 ♂ brach., 2 ♀ macr., det. FC ( CFC) ; idem, 22.X.2017, 5 ♂, 3 ♀ macr., 2 ♂ brach., 12 nymphs ; idem, 24. VI .2018, 6 ♂, 4 ♀ macr.; Upper Jhelum canal near Tarikha Village, Gujrat , 32.497335° N 74.016565° E, 26. VI .2018, 4 ♂, 3 ♀ macr.; idem, 30.X.2019, 4 ♂, 2 ♀, macr. Sialkot District: Pond near Jaje Village , 32.394221° N 74.628148° E, 29.X.2016, 1 ♂ macr.; idem, 10.VII.2017, 1 ♀ macr.; Marala Ravi link canal near Basi wala pul , 32.222449° N 74.590056° E, 12.III.2016, 1 ♂, 2 ♀ macr., 1 ♂ brach.; idem, 2 ♂ macr., det. FC ( CFC) ; idem, 10.VII.2017, 1 ♀ macr .; idem, 22. VI .2018, 2 ♂, 4 ♀ macr., 1 ♀ brach.; Marala Ravi link canal near Kotli Baba Faqir Chand, 32.293986° N 74.526254° E, 16.IX.2017, 1 ♂, 3 ♀. 20 nymphs ; idem, 8.XII.2017, 2 ♂, 2 ♀ macr., 1 nymph ; idem, 22. VI .2018, 1 ♂, macr.; pond near Dar Rice Mills, Bhoroki, Pasrur Road , 32.403149° N 74.603264° E, 7.X.2017, 1 ♂, 1 ♀ macr.; Marala Ravi link canal near Canal City Housing Society , 32.475159° N 74.422701° E, 23. VI .2018, 4 ♂ macr.; Upper Chanab canal near Zafarwali , 32.478587° N 74.376158° E, 28.IX.2017, 2 ♀ macr.; idem, 2 ♂ macr, det. FC ( CFC) ; idem, 15.X.2017, 2 ♂, 2 ♀ macr.; flood drainage canal near Behari Colony , 32.320839° N 74.393796° E, 29.XI.2016, 1 ♂, 5 ♀ macr.; Marala Ravi link canal near Motra , 32.367782° N 74.419769° E, 12.VIII.2017, 1 ♀ macr.; idem, 23. VI .2018. 4 ♀ macr., 3 ♂, 1 ♀ brach.

General distribution. This water strider species occurs throughout the Oriental Region with records from Pakistan (known western limit of the species), India, Nepal, Sri Lanka, Bangladesh, Myanmar, Thailand, Laos, Vietnam, China (Hainan), Malaysia (peninsular and Borneo), Singapore, and Indonesia (Sumatra) (see Damgaard et al. 2014).

Remarks. This species was recorded from Punjab by Pruthi (1933). More recently, it was recorded from Keenjhar Lake in Sindh Province ( Buzzetti et al. 2006), which is about 1000 km south-southwest of the study area.