H. quadripicta species group

This group comprises six species (H. brevis, H. brunnifacialis, H. knighti, H. quadripicta, H. sandakanensis and H. singaporensis) with the following combination of characters: vertex and thorax dorsally yellow; pronotum, mesonotum and scutellum with one small brown spot laterally; forewing veins brown, more heavily marked with brown on some veins including a spot on apex of claval veins, on veins of fifth apical cell and on apical cells and on wing apex; vertex smooth or with indistinct longitudinal or oblique striations; pronotum smooth or with indistinct transverse striations; aedeagus separated from connective, without preatrium and with long basal apodeme with side lobes, shaft elongate, cylindrical, with or without processes. One species tentatively included in the group (H. brevis) has similar markings to other species but its connective is distinctly different.