Dr Phil Smith: Wildlife notes October 2020

Moon Fly (Mesembrina meridiana),  Ravenmeols logs, 15/10/2020

October is normally the second wettest month of the year but this one was exceptional. Due to a persistently energetic North Atlantic Jet-stream, it rained in Formby on 22 days, some of that contribution being from two named storms. The 3rd was the wettest day recorded in England since records began in 1891, though we didn’t have a particularly large amount of rain here. The result was that the water-table at the Devil’s Hole blowout came up 28cm (nearly a foot) during the month, flooding the slack.

Dr Phil Smith: Wildlife notes August 2020

Goat Moth (Dr Phil Smith)

On average, August is the wettest summer month, so it wasn’t surprising that we had rain on 14 days. Most of it was light but the second week was warm and humid, culminating in a thunderstorm on the 10th. The spring drought seemed a distant memory as late summer flowers like Grass-of-Parnassus proliferated in the damp conditions. Many of our dune-slacks didn’t dry up at all, my measuring point in the Devil’s Hole at Ravenmeols registering shallow water throughout.

Our concerns about the absence of Six-spot Burnet moths in July proved unduly pessimistic, their numbers rapidly increasing in early August, joining the second generation of Northern Dune Tiger Beetles. The latter seems to have done particularly well this year, Gems in the Dunes staff reporting hundreds in their usual bare sand habitat, mostly on the frontal dunes. A large area of flowering Apple Mint (the “mint patch”) at Ravenmeols attracted a wide range of insects, though the number of butterflies was down on last year. Even so, the glamorous Red Admiral, Peacock, Comma and Small Tortoiseshell, accompanied more mundane Gatekeepers. I was especially pleased to find two Small Heaths, a butterfly that is declining nationally but is still plentiful on the Sefton Coast. Amongst a wealth of bees and flies on the mint, the impressive Tachina fera attracted attention. This is a large bristly fly that parasitises various moth caterpillars. The female lays its eggs on leaves. When the eggs hatch, the young larva enters the body of a caterpillar and eats it from the inside.  This fly is widespread and common throughout much of the country, having a successful life-style shared by a great number of flies and wasps. These include a group of flies known as “beegrabbers” from their habit of jumping on bees and laying an egg on them. The larva develops inside the bee and eventually kills it. I found the widely distributed Four-banded Beegrabber on several occasions but the much rarer Dark-cheeked Beegrabber was a particular highlight, two being photographed on Ragwort at Ravenmeols on 18th. Two Common Lizards basking on a nearby log pile was a distraction from the insects.

Pages

Subscribe to Front page feed