Corixa dentipes (Thomson 1869)

This is not as abundant in Northants as C. punctata and appears in the same habitat in weedy ponds, gravel pits, dykes, river backwaters with a slow flow and neutral or alkaline waters and has been found in dewponds and temporary habitats. It is frequently taken in weedy deeper water and is identified by examining C.punctata samples carefully with a hand lens or at home under the microscope. It is a Central European species that was first identified in Britain in 1928.

There is one generation a year. Spermatozoa develop during the autumn but are not transferred to the females until the following March or April.

Size: 12.5mm
Emergence period:
GB IUCN Status: Least Concern
Northants Status: Un-common
Number of records: 57
Number of sites: 26
1km squares recorded: 38
5km squares recorded: 23
10km squares recorded: 16

Distribution:

Found in 26 Sites and 16 10k squares across Northants this is Un-common and often appearing with Corixa punctata. This is surprisingly confined to the centre of the county but can be found all across the midlands.

Habitat:

It is found in weedy ponds, gravel pits, dykes, river backwaters with a slow flow and neutral or alkaline waters and has been found in dewponds and temporary habitats.

Identification:

Corixa dentipes can be identified by i't's size as 3.5mm or more broad and 12.5mm long. It has more than 14 pale lines on it's pronotum. It is very similar to C. punctata in Northants but can be separated by having a notch out of the base of the mid tibia.