|Common name||22-spot ladybird|
|Scientific name||Psyllobora vigintiduopunctata|
The 22-spot ladybird is one of 15 different species of ladybird found in Ireland (not including the invasive harlequin species). This species has yet to be included in any red list for Ireland.
The species does not have any legal status.
The 22-spot is a small but very distinctive ladybird. The species has a bright lemon yellow background colour with black spots (generally 20-22 spots are present) which are rarely fused. The pronotum (the segment between the head and abdomen) can be yellow or white with 4 black spots arranged in a semi-circle with a small black triangle at the base. The 22-spot is the only species in Ireland in which the larva, pupa and adult are all of a comparable colour and pattern (Roy et al, 2011). The only similar species in Ireland is the 14-spot ladybird.
22-spots are mildew feeders and are most likely found on the leaves of hogweed (Heracleum sphondylium), ragwort (senecio jacobaea) and other umbellifers (apiaceae). The species also feeds on other sources when hogweed is senescing, these include creeping thistle (Cirsium arvense) and young trees, in particular oak (Quercus sp.). 22-spots generally prefer low vegetation in grasslands along with edge type habitats such as roadsides and the boundaries of fields were their favoured plants species are likely to be found.
Distribution throughout Europe is fragmented, with few records from the Mediterranean and Eastern Europe. Higher densities occurring in the UK, Scandinavia, Germany, Belgium the Netherland and Ireland. 10,055 records of this species are mapped on the Global Biodiversity Information Facility data portal.
This species is grossly under-recorded in Ireland. It is likely to occur across the island, and knowledge of its distribution would benefit greatly from increased survey work. As of September 2013, there were 29 records of Psyllobora vigintiduopunctata on Biodiversity Maps Biodiversity Maps.
The National Biodiversity Data Centre is trying to improve our knowledge on the distribution and status of the 22-spot ladybird in Ireland. Should you observe this species, please submit the sighting to add to the database. Detailed observations will assist us gaining a better insight into the range and status of Psyllobora vigintiduopunctata in Ireland. If you are uncertain please attach a photograph for validation. Please submit any sightings and photographs. All records submitted on line can be viewed on Google Maps below – once checked and validated these will be added to the national database and made available for conservation and research.
The following map is interactive. If you would prefer to view it full screen then click here.
For further information on the 22-spot ladybird see:
Roy, H., Brown, P., Frost, R. And Poland, R. (2011) Ladybirds (Coccinellidae) of Britain and Ireland. FSC Publications, Shrewsbury.
For further information contact Dr. Liam Lysaght (email@example.com).