Xenobates indicus sp. nov. (Hemiptera: Gerromorpha: Haloveliidae) from India, the first species of the genus described from the Indian subcontinent.

Xenobates indicus sp. nov. is described from Tamil Nadu and West Bengal, India. It constitutes the first species of the genus from the Indian subcontinent. The new species can be identified by its large size when compared to its closely related species and the presence of setal fringe on the posterior margin of mediotergite VIII of female. Key to the species of Xenobates from South and Southeast Asia and the list of world species are provided (Table 1).

Amemboa Esaki (Hemiptera: Gerromorpha: Gerridae) of India, with descriptions of two new species and establishment of species groups of world species.

Two new species of Gerridae, Amemboa latoae Jehamalar & Dash, new species and A. zetteli Jehamalar & Dash, new species, are described from India. Amemboa latoae is described from Meghalaya and can be recognised by the presence of the two setal tufts on the flexor region of the male fore femur and the slightly dilated midlateral region of the main part of the proctiger. Amemboa zetteli Jehamalar & Dash, new species, is described from Andaman Island and can be identified by the presence of the three setal tufts on the flexor region of the male fore femur; the rhombus-shaped main part of the proctiger of the male and the shape of the posterior region of the pygophore. Eleven species groups of Amemboa are also recognized in the present paper.

Three new species of Metrocoris Mayr, 1865 (Heteroptera: Gerridae) from India and establishment of species groups.

Three new species of Metrocoris, namely Metrocoris issaci sp. nov., Metrocoris josephi sp. nov. and Metrocoris latus sp. nov., are described from Meghalaya, India. Four new species groups are recognised in Metrocoris, namely the Metrocoris coxalis group, Metrocoris latus group, Metrocoris monticola group and Metrocoris nepalensis group. All except the M. latus group are erected from the M. compar group. Metrocoris issaci sp. nov. and M. josephi sp. nov. belong to the M. coxalis group and M. latus sp. nov. forms a monotypic group. Metrocoris issaci sp. nov. can be distinguished by the hind coxal process of female reaching half the length of hind trochanter; M. josephi sp. nov. can be distinguished by the medium-sized hind coxal process reaching only to the subbasal region of the hind trochanter and M. latus sp. nov. can be distinguished by the presence of broad parameres and conical pygophore of the male. Metrocoris dinendrai Basu, Polhemus Subramanian, 2016, is synonymized with M. compar (White, 1883) and a redescription of M. compar is provided. Detailed illustrations of all the new species and M. compar are given.