Description and notes
A genus of small ground dwelling ants. The majority of records are from green-houses or other permantly heated buildings. Outdoor records are usually from piles of rotting or fermanting matter. There are known to be three species present in the British Isles but very similar morphology makes determining specimens to species difficult.. The best known is H. punctatissama iso Seifert, 2013 with scattered records across all areas; H. ergatandria iso Seifert, 2013 only recently split from H. punctatissama and H. eduardi a tramp species with very few records.
See the species pages
Seifert (2013) gives a method of separating the species based on measurments of the head width and scape length. The input of data has to be in millimetres and accurate for three decimal points. For Head width, CW and Scape length, SL:
If SL/CW > 0.88 you have H. eduardi
For workers and ergatomorphic females calculate the function D = 142.82 SL – 68.67 CW –26.12 Specimens with D<0 belong to H. ergatandria and those with D>0 to H. punctatissima.
For gynomorphic females calculate the function D = 85.90 SL – 18.54 CW – 30.312 Specimens with D<0 belong to H. ergatandria and those with D>0 to H. punctatissima.
Or consult an expert
Year profile last updated