Moths: September 2017
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This time there was cloud and the temperature did not drop below 10.3°C. However there was only a very slight increase in moths to 132 of 21 species. There was a Turnip and a Delicate. A trap at the back of the ringing room yielded the dark form of Pale-lemon Sallow a species we have only a handful of records for.
A drop back down to 5.6°C due to a clear night reduced the catch to 122 moths of 17 species. Lunar Underwings hit the front with 61. There were also two Delicates and the first Feathered Brindle of the autumn. The actinic trap yielded the first Red-line Quaker of the autumn.
A very slight increase to a minimum of 8.8°C gave a definite increase in moths to 174 of 23 species. Over the last two days we have added Deep-brown Dart and Beaded Chestnut to the year’s list.
Those who check this page regularly may remember in the spring I commented on the number of earliest ever records we were getting. Well now we seem to be extending the season with a number of latest ever records. A Mottled Rustic yesterday was the latest here by a month. Today we had a Kent Black Arches which the guides say flies until early August.
Slightly warmer last night (8.1°C) but the moths were still not impressed and only increased to 91 0f 17 species. The trap at the front did hold a Vestal and two C. plebejanas.
The sky cleared and the temperature dropped to 5.4°C, this did not impress the moths and there were only 81 of 16 species in the trap. This did include another Delicate.
Again cloud helped keep the temperature up a bit. The catch increased to 206 moths of 32 species. This included a Delicate, a Dark Swordgrass and a Crocidsema plebejana. The forecast of some warmer nights might provide some interesting records in the next few days.
Cloud formed helping stop the temperature go below 7°C but there were only 100 moths of 16 species. Large Yellow Underwing dominated with 38. There have been no ‘micros’ for a couple of nights which is not surprising considering the low temperatures.
Despite the temperature dropping to 5°C during the clear spells there was cloud at times and 91 moths of 18 species were caught. This included the first Lunar Underwings and Sallow of the year. There were also six L-album Wainscots, a Delicate and a Silver Y>
Another below six degrees night, but maybe the cloud associated with the intense squall in the middle of the night kept the temperature up for a while, as there were 141 moths of 26 species. Autumnal Rustic was new for the year. There was also a Pine Carpet, Turnip and a Southern Wainscot. The latter seem to be dragging on late.
Another damp start to the night but it cleared and the temperature dropped to 5.7°C. Thankfully it was not as quiet as last night and the catch increased slightly to 69 moths of nine species. This did include a Beautiful Hook-tip and a Cypress Pug.
After the previous nights blow out the night started damp and windy. It did slowly clear but the temperature dropped to 6.7°C. The moths were not impressed and only six made it into the trap- three Large Yellow Underwings and one each of L-album Wainscot, Angle Shades and Square-spot Rustic.
The current winds with a bit of north in and giving more autumnal temperatures, 8.6°C last night, and the catch stays low.Last night it was 76 moths of 15 species including a Scarce Bordered Straw. The forecast for tonight suggests even the smokers shelter will not protect the trap and so it will have a night off.
A reasonable use was found for the smokers shelter as it provided enough shelter to stop the trap being blown away or washed out. Despite the weather the catch increased slightly to 76 moths of 13 species. White-points continue to tick along ,with two, and there was a fresh Feathered Gothic.
Unlike migrant birds clear nights do not help the moth catch. The temperature dropped to 7.6°C and the main trap held just 50 moths of 15 species. Two Rush Veneers were slightly of note. There was also a Red Underwing in each trap.
The damp cloudy start to the night was obviously enough to get some moths out and about. 212 moths of 43 species were recorded. Black Rustic and Barred Sallow were new for the year. There were also two Scarce Bordered Straws and a Rush Veneer. The run of out of season moths continued with a Scarce Footman.
Overnight cloud and drizzle kept the temperature up and 264 moths of 34 species were recorded. Large Yellow Underwings equalled Setaceous Hebrew Characters with 85 each. There was also a Pearly Underwing.
A very bright moon outcompeted the moth trap and there were only 48 moths of 18 species in the car park trap Flounced Rustic was most numerous with 15. The track side track did just a bit better and Large wainscot was new for the year.
Heavy drizzle early in the night put a damper on the catch. There were only 71 moths of 29 species.
The unsettled period continues to provide cloud but also breeze. It was a bit warmer but the catch dropped to 144 moths of 42 species.
Highlights included Evergestis limbata, three Rush Veneers and a very smart 2nd generation L-album Wainscot. Oblique Striped continue to appear in singles.
The overnight drizzle and rain kept the temperatuture up at 13.4°C and so some moths ventured out. This time the track side trap had the lowest catch. The car park trap had 193 moths of 38 species including a late Anania perlucidalis.
We have been reviewing our moth records in the light of the newish categorisation for the National Moth Scheme. Unfortunately double figures of micros may have to be taken out and put in an addendum. They are either category 3 but no recorder or other details have been recorded on the electronic database, or, they are category 4 and there is no evidence of gen. det. being done. Some, such as Ephestia unicolorella, will be simple to get sorted but others go back to single records from some time ago. If you know of any one who has done gen. dets. on Sandwich moths we would very much welcome the details.
Another cool night, down to 6.9°C, and so a haul of 60 moths of 20 species was not surprising. There was another Scarce Bordered Straw and a second brood Matthew’s Wainscot. The track side trap had a Red Underwing.
The coolest night so far, down to 7.5°C, resulted in less than 100 moths. There was yet another Scarce Bordered Straw.