In this section
Other true flies
- Dance fly (Empididae)
Horse flies (Tabanidae)
- House fly (Muscidae)
- Long legged flies (Dolichopodidae)
- Marsh flies (Sciomyzidae)
- Mosquito (Coquillettidia)
- Mosquito (Culicidae)
- Moth fly (Psychodidae)
- Pelecorhynchid flies (Pelecorhynchidae)
- Primitive cranefly (Mischoderus)
- Rat tail maggots (Syrphidae)
- Sandfly or black fly (Austrosimulium)
- Shore flies (Ephydridae)
- Soldier fly (Stratiomyidae)
- Wood gnat (Anisopodidae)
The Tabanidae is another one of the less common families of true flies in our fresh waters. Their larvae resemble those of craneflies, but the tabanids have distinctive rings of psuedopods (fleshy bumps) along the body. Like the tipulids the head is retractile and there are no prolegs, but unlike the tipulids there is no spiracular disc (breathing structure) at the end of the abdomen.
Most of our records of tabanid larvae are from hard bottom, bush covered streams.
It is assumed that like overseas, New Zealand tabanid larvae are predators, preying on other stream invertebrates.
- Hard bottom: 3
- Soft bottom: 6.8
The tolerance values (ranging from 0 to 10) give an indication of which are the sensitive taxa (values of 8 or more) and which are the tolerant taxa (values of 3 or less). For more information see: Indicator species
Due to their infrequent occurrence, we don’t know much about the water quality requirements (and therefore indicator value) of tabanids. They have tolerance values of 3 (hard bottom sites) and 6.8 (soft bottom sites).