Status: Rare: restricted to the New Forest and East Dorset.
RDB Category: Endangered (RDB1)
Habitat: Shallow boggy pools and pits, and peat bogs (where bladderwort occurs)
Host plant: Lesser bladderwort (Utricularia minor) and possibly other Utricularia spp. Adults may be found on grasses in boggy areas.
Overwintering: As adults
Food: Adults on fine leaves and stems above the water surface, larvae on stems and leaves (partially or wholly submerged, sometimes with part of the abdomen exposed to the air).
Other notes: Unlike other British Longitarsus, antennae and legs almost entirely dark brown to black, plus pronotum & elytra entirely black without yellow markings.

Status: Mostly in southern England, but old records from the Outer Hebrides and Cumbria; Scarce (Notable B)
Habitat: Marshes, calcareous grassland, woodland clearings, forests, commons and next to water (still and flowing)
Host plant: Various Lamiaceae
Overwintering: As adults
Food: Adults on leaves, larvae at roots.

Status: Very common and widespread
Habitat: various
Host plant: Various
Overwintering: As adults in moss, haystack refuse and grass tussocks
Food: Adults on leaves and possibly pollen, larvae at roots (reports of leaf- and stem-mining are probably incorrect)..
Other notes: Adults parasited by nematodes (unidentified) and a braconid wasp larva, probably Perilitus sp. Black forms may be very similar to L. anchusae.

Status: Rare (SE England only) with few records, possibly threatened by scrub encroachment.
RDB Category: Insufficiently Known (RDBK)
Habitat: Open woodland clearings, shady grassland and fallow fields (especially adjacent to woodland)
Host plant: Heath speedwell, Veronica officinalis.
Overwintering: Probably as adults
Food: Adults on leaves, larvae probably at roots.