Haloveliinae, Esaki, 1930

Zettel, Herbert, Laciny, Alice & Bongo, Juvy P., 2021, The genus Xenobates (Hemiptera: Veliidae) in the Philippines: overview and description of two new species, Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 61 (1), pp. 221-230 : 223

Key to the genera of Haloveliinae

(modified from Aඇൽൾඋඌൾඇ 1992)

1 Eyes very large, interocular width smaller than half of head width. Antennomere 1 shorter than 3. Protibia of male without grasping comb. Freshwater species. .. 2

– Eyes small to moderate in size, interocular width at least as large as half of head width, often much larger. Antennomere 1 in most species longer than 3. Protibia of male with or without grasping comb. Marine species (also in estuaries). ............................................ 3

2 Body with yellow marks. Antennomere 2 longer than 1. Metatarsomeres subequal in length. ....................... ........................................ Strongylovelia Esaki, 1924

– Body without yellow marks. Antennomere 2 shorter than 1. Metatarsomere 1 about half as long as 2. (No records from the Philippines.) .................................... ........................................... Entomovelia Esaki, 1930

3 Eyes moderate in size, interocular width smaller than two thirds of head width. Pronotum in most species with pale markings ( Figs 1–8 ). Protibia of male without grasping comb. ........................................... 4

– Eyes small, interocular width larger than two thirds of head width. Pronotum in most species entirely black, rarely with small reddish markings. Protibia of male with grasping comb. ................................................ 5

4 Mesofemur length less than 0.9 times body length. Mesotarsus length less than 0.4 times mesotibia length. In most species with rich pale colour and spots of silvery pilosity ( Figs 1–8 ). Xenobates Esaki, 1927

– Mesofemur length more than 0.9 times body length. Mesotarsus length about 0.6 times mesotibia length. Almost all species dark coloured, with or without scattered silvery pilosity. ............................................. .................................... Haloveloides Andersen, 1992

5 Abdomen of female strongly constricted at segment 6. Male with swelling on abdomen anteriorly (following PඈඅΗൾආඎඌ & PඈඅΗൾආඎඌ 2006). (No records from the Philippines.) ................................................................ .................. Ocheovelia Polhemus & Polhemus, 2006

– Abdomen of female and male without such modifications. ................................. Halovelia Bergroth, 1893 Note. As no synapomorphies for Halovelia could be proposed (PඈඅΗൾආඎඌ & PඈඅΗൾආඎඌ 2006), Ocheovelia appears to be a clade of highly modified species of Halovelia .

Figures

Figs 1–4. Habitus of 1, 2 – Xenobates nypicola sp. nov. and 3, 4 – Xenobates riedli sp. nov.; (1, 3 – males, 2, 4 – females).

Figs 5–8. Habitus of 5, 6 – Xenobates murphyi Andersen, 2000 and 7, 8 – Xenobates cf.argentatus Andersen, 2000 from Cebu; (5, 7 – males, 6, 8 – females).