Blog

Turnips and Satellites

Angle Shades
Angle Shades

 

This week the moth trap was located at Plantation Close south of Millennium wood for the second time on the 25/10/2017 started at 2100 and finishing at 0030. Firstly, tonight was the most successful in terms of the amount of species captured. This included 9 species in total, 8 macros and 1 micro moth. The most frequent moths seen last night was the November Moth (Epirrita dilutata) and Feathered Thorn (Colotois pennaria) both belonging to the Family Geometridae. Pleasantly, the C. pennaria is a wonderfully marked and peach coloured wings was prevalent tonight as we caught 5 in total. Similarly, the E. dilutata has toothed edge coupled with wavy cross bars and closely resembling other closely related Epirrita species, a total count of 9 individuals. As the night progressed several beautiful moths made themselves catchable with the use of nets and pots.

A cryptic wonder of an Angle Shades (Phlogophora meticulosa) appears to be a foiled leaf, a logical adaptation for avoiding predator during its day roost. The flight period of these species extends from April to October where UK populations are supplemented by the amazing migration of individuals from continental Europe. Another fabulous macro-moth from the Noctuidae Family appeared, a wondering Satellite (Eupsilia transversa) with warm ginger centred kidney spots on the forewing. This is a species which appears from September to October then hibernating to reappear in May to April. The second Noctuidae species to join us was an inconspicuous and demarked Turnip Moth (Agrotis segetum) which has pure cream white fringing to the forewing, interestingly the larvae feed on roots of low growing plants.

Satellite
Satellite

As moth presence began to diminish, a leisurely walk over to the bus shelter produced more Epirrita dilutata, Colotois pennaria and a Red-green Carpet (Chloroclysta siterata) all having a cosmopolitan distribution and abundance across the UK. An easily identifiable micro-moth, a Light Brown Apple Moth (Epiphyas postvittana) settled on the side of the trap for a substantial amount of time allowing successful identification. At this dynamic and transitional time of year, certain Genus groups enter their specific flight periods. A  striking yellow and ashy barred moth called Barred Sallow (Xanthia aurago) turned up and impressed the audience of budding lepidopterologists.

Turnip Moth
Turnip Moth

Consequently, as the moths began to disappear into the depths of the bedraggled dark cape of the night sky, we decided to disassemble the trap. What sprung out of the plastic works was two new species for the night. One that I and my cohorts could recognise as a Yellow-line Quaker (Agrochola macilenta). The final species of the night was a lovely specimen finishing off a delightful nights mothing. Two sharply squared off forewings and dark qualities made it relatively easy to identify as a Dark Chestnut (Conistra ligula). Thanks to the attendees of this moth trapping night, it was very enjoyable.

Barred Sallow
Barred Sallow

 

Advertisements

Thorns, Quakers and Crescents

Feathered Thorn
Feathered Thorn

The night began with a pleasant walk to Planation close just south of Millennium wood. Technical difficulties with the generator required the assistance of Simon Taylor who solved this problem instantly. Vocally active Tawney Owl’s (Strix aluco) made themselves heard throughout the night. The present weather conditions was in our favour with a relatively warm southerly breeze coupled with light cloud cover. The first moth attracted to the light was a November Moth (Epirrita dilutata), a worn individual easily confused with either Pale November Moth (Epirrita christyi) and Autumnal Moth (Epirrita autumnata). The males November Moths have 3 separate morphs being different in colour, markings, shape and size. So, jumping to conclusions is not an option as there many aspects to consider when identifying a species of the Genus Epirrita. As the night progressively turned cooler I opted for a hat and gloves. Another moth was spotted around the trap, a Snout (Hypena proboscidalis) was the second moth of night though at first quite difficult to separate from other Hypena genus and species in the Herminiinae sub-family. The worn appearance didn’t help, but, evidence of dark and light sub-terminal spots, recurved tip of the leading edge and distinctive proboscis reassured us that it was a Snout (Hypena proboscidalis).

Green-brindled Crescent
Green-brindled Crescent

After a brief blight in moth occurrence a little gem appeared from the night fluttering purposefully towards us. The general impression of size and shape (jizz) funnelled our identification to the family Geometridae. It turned out to be a stunning moth, a Red-green Carpet (Chloroclysta siterata) of the sub-family Larentiinae with distinctive protruding palps, glossy green waved cross lines and a cross band running on the forewing running through the upper abdomen segments. The cold breeze was becoming uncomfortable for some members so a walk to the bus shelter proved to be fruitful in terms of moths. Initially, a further three November moths (Epirrita dilutata) caught our eye all of which were male and of several structural and colour morphs. But we narrowed our attention to the metallic gloss and bulbous kidney marks of two Green-brindled Crescents (Allophyes oxyacanthae).

Re-green Carpet
Red-green Carpet

It seemed the moth gods were rewarding us with some great species. Two micro’s appeared unsurprisingly unidentifiable at first. The first one was easy to identify as a Light brown apple moth (Epiphyas postvittana) which is the only moth I have been able to identify as they fly all year round. However, the other micro was difficult to place a name on it, so the Identification of Micro moths of Britain and Ireland book was required in combination with the Facebook UK micro-moth identification page leading me straight to Eudonia augustea (Narrow-winged Grey). As the night got colder and mothless, member started to disappear. And to the sad part when we have to pack away the moth trap, but excitingly the egg trays produced at beautiful moth known as a Yellow-line Quaker (Agrochlora macilenta) which was a fitting end to a great night mothing.

Yellow-line Quaker
Yellow-line Quaker

Big Moor Trip

Wednesday 11 October, 2017. Purpose of Trip: to watch the deer rutting.

Deer have a mating season which culminates in the rut, in October.  The rut includes such behaviour as loud bellowing, clashing of antlers and pacing parallel to each other, to eye up the competition! (Deertails, 2017).  They are, of course, competing for mating rights with the females.  This is what we aimed to see.

stag and hinds a way away

First group pic with simon to the right

We left Brackenhurst at around 13.30.  Originally, it was intended to leave at 13.00, but it was found that the trip was rather popular, with more people attending than we thought we had room for, so a little bit of ‘sorting out’ was required!

We parked at the Grouse Inn (no, we didn’t go in, and anyway, it was closed!) and walked across the road, through the gate (shutting it after us!) and across the cow field.

Due to the rain, which was coming down in buckets, the going was very muddy, and slippery in places, so we had to pick our way up the hill, but we managed fine.

group spread out along the path

We managed to spot deer almost straight away, after we had reached the top.

Sophies female deer pic 1

 

 

A stag was spotted on the far horizon, and we heard some stags bellowing, then saw a couple of them running away, along a ridge, from another stag.

stag looking to its left

stag bellowing

Due to the rain, our binoculars needed to be wiped on a regular basis, and so did our camera lenses, which unfortunately led to some hazy images.  The views around us were beautiful even so.

general view near the rocks

Looking from the sticking out rock

Sophies big moor pic near the sticking out rock

When we got to the top, there was some interesting lichen on the stones.  On the way, Max found a bird’s foot.  So it wasn’t ALL about the deer, but mainly, it was.

Lichen with raindrops

 

The drive was a long one, but the trip was worth the effort, and one might say that the wind and rain were exhilarating!  A definite recommendation for another day out.

group pic near the top stones and shelter

group pic two in two groups

 

References

Deertails. 2017. Looking Forward to the Spectacle of the Autumn Rut.  [Online] Available at: http://whydidthedeercrosstheroad.langbeinwildlife.co.uk/ [Accessed 17 October 2017]

 

Bibliography

Mitchell, B., Staines, B., W., Welch, D., National Environment Research Council. 1977. Ecology nof Red Deer. [Online] Available at: http://nora.nerc.ac.uk/5137/1/Ecology_Red_Deer_Scotland_.pdf

The National Trust. 2017. Walking Trail. [Online] Available at: https://www.nationaltrust.org.uk/longshaw-burbage-and-the-eastern-moors/trails/eastern-moors-red-deer-and-edges-walk

 

Mystery Noc

group picture
Rose Garden- 06/10/2017

The night began with no moths, but we had faith in our Robinson trap that shined a stairway of light irresistible for any passing moth. However, what came first was the consoc members who were very interested and engaging in the moths. Our first moth of the night was very pleasant indeed, a Brimstone Moth (Opisthograptis luteolata) and ended up with 2 individuals. Continuing on from this crisp yellow aerofoil, another moth appeared this time less distinctive at first glance however by the general impression, wing shape and posture we could place it in the Family of Geometridea (sub-family Larentiinea).  While consulting the moth guide the temperature started to drop slightly though we eventually discovered the moth we caught was a November Moth (Epirrita dilutata). An inconspicuous species with several male forms having variable amounts of marking consisting of pale coloured underwing, vertical vain lines with black and pale white trailing edge to the forewing.

A Tawney Owl (Strix aluco) kept us company when moth action was quiet. Tawney Owls in autumn are noticeably vocal as adults attempt to oust first year individuals from there aggressively protected territory. Fortunately, a bright green moth landed beside the trap and was expertly caught and potted. A wonderful moth known as the Merveille du Jour (Dichonia aprilina) which in appearance consists of lichen greens and symmetrical black lines forming two kidney spots in the centre of the forewing. This species forms falls into the Family Noctuidae (sub-family Cuculliinae) accompanied with sharks, pinions, chestnuts, sallows and allies.

November moth 2
November Moth

The next moth that turned up took us some time to work out what species it is. The Rosy Rustic (Hydraecia micacea) which has a flight period from August to October. Orange brown with a dark central cross band bordered black containing two pale ovals on each forewing. The leading edge of the forewing is straight with a decurved sub-terminal tip. After a mothless 20 minutes we decided to check the other moth trap which in actual fact is a bus shelter, a Common Wainscot (Mythimna pallens) was the only moth we found. Previously, the bus shelter has harboured some great moths of late including Barred Sallow (Xanthia aurago), Pink Barred Sallow (Xanthia togate) and Lunar Underwing (Omphaloscelis lunosa).

Rosy Rustic
Rosy Rustic

At 11:30pm we started to pack away the equipment. While checking the egg trays a mystery Noctuidae appeared, the abraded and worn wing where apparent instantly. This made identification problematic. Initial thoughts where leaning towards sub-family Noctuinae (including darts, underwings and clays) and Cuculliinae (Including sharks, pinions, chestnuts, sallows and allies). But, Noctuinae was more likely family as posture, shape of kidney mark and dimensions of the leading edge. After the stage of identifying the individual to family level, the next step was to decipher which genus this moth belonged to. Two moths sprung to mind Square Spot Rustic (Xestia xanthographa) and Small Square Spot (Diarsia rubi). Consulting opinions so I could come to a logical conclusion, an emphasis on the curvature of the leading edge, and resemblance of the small square spot on its forewing. It’s relatively conclusive that this moth is a Small Square Spot (Diarsia rubi).

Small-Square Spot
Small-square spot

 

Brack to Mothing

Merveille Du Jour

A Robinson’s moth trap, generator, pots and a moth net is all you need to have a mothing experience you’ll never forget. That’s exactly what happened on the 29th September for the first Conservation Society moth trap of the season located at the rose garden on brackenhurst. So excitedly, I began to assemble the moth trap at 8:00pm. The overcast and warm weather conditions meant it was night to trap moths. As the new and existing consoc members arrived a moth fluttered quite precariously towards the trap eventually ending up in my pot. After consulting the bible of moth book (Moths of Great Britain and Ireland by Martin Townsend, Paul Waring and illustrations by Richard Lewington) we decided it was a Dusky Thorn (Ennomos fuscantaria). As the light began to have short term effect on my ability to see anything, a medium sized noctuid fluttered in front of the group and without hesitation my net encased it within seconds and safely potted. A Merveille du Jour (Dichonia aprilina) appeared before us, a stunning green moth with dark central lines and specks of white continued to amaze people throughout the night.

Moths are interesting insects and are members of the order Lepidoptera. The individual species are then represented in families and subfamilies. There are over 2500 species of the moths recorded in the UK including both macro and micro-moths. This time a smaller moth landed beside the trap, a micro-moth possibly that would take me the rest of the week to identify, but thankfully it was a Staw Dot (Rivula sericealis). A minimalist moth in terms of colour and markings but none the less a smart little moth.

The Families Geometridae and Noctuidae collectively contain the greatest number of species in the UK than other families. A combination of indicative morphological and behavioural traits are used to place an individual into on of these Families. Moths in the Family Geometridae generally have slender bodies, with broad fore wings and hind wing visible. Flight is slow, fluttery and weak giving the resemblance of some smaller butterfly species. Some are day flying so you don’t really need a moth trap to become a moth enthusiast. Constituents of the Noctuidae are broad bodied and when at rest trailing edge of wing is overlapped or connecting therefore the hide wing is hidden. A typical characteristic of this group is the kidney and oval markings on the fore wing generally involving some horizontal barring.  A common species throughout the UK turned up known as the Lesser Yellow Underwing (Noctua comes) having a yellow hindwing, distinctive kidney spots on forewing and a relatively broad black sub-terminal band across the outer web of the hindwing.

A combination of some great moths and interested consoc members made for a pleasant night to be out moth trapping.

White-Clawed Crayfish Project

Wednesday 4th October

Following our previous work with the Nottinghamshire Biodiversity Action Group (NottsBAG) we were invited back for another volunteering session on the Crayfish Eradication project. This project, in partnership with the Environment Agency, is aiming to eradicate the populations of the non-native signal crayfish; an invasive species which outcompetes with our native white-clawed crayfish.

Once we collected all the equipment we needed we split into 3 teams to tackle 8 sites in total, spread across 2 ponds. Within these teams about 3 people got into the waders, while the rest were responsible for measuring and recording all of the crayfish caught. Two different methods were used for catching the crayfish, the first is by putting out traps filled with bait within the ponds and we emptied these traps, and the second was going into the ponds with nets and using a sweeping motion to collect the smaller crayfish that would otherwise be able to escape the traps

IMG_9587IMG_9588IMG_9589IMG_9590IMG_9591

Every crayfish that we caught had to be recorded and we made note of the species, trap method, trap number, site, size, sex, damage (such as missing claws or antennae) and any signs of disease. Any crayfish caught with the nets were removed to be humanely dispatched. The crayfish that were in the traps were put into a bucket to be dispatched if they were female or a male <40mm in carapace length and any males with a carapace >40mm were castrated and marked with nail polish before being put back into the pond. The reason behind this is to avoid any population blooms in any smaller crayfish that are left behind in the ponds. Also by removing all the breeding females the larger males will then start to predate the smaller male crayfish, helping to further reduce the population. Additionally there were also crayfish collected in the traps that had already been marked, these were still recorded and checked for castration before being released.

In total 308 crayfish were caught, 160 of these were caught in the traps, 53 of which were sterilised and returned, 74 were sterilised crayfish that were recaptured and returned and the final 33 were humanely dispatched. The other 148 crayfish were caught using the netting method all of which were dispatched. A perch was also caught, which we carefully released back into the pond.

IMG_9197IMG_9209IMG_9219

All in all it was a very successful day and its safe to say ConSoc will be involved in future crayfish volunteering sessions, as well as other projects like this one!

 

 

Brackenhurst Campus Wildlife Walk

30th September 2017

IMG_3215

To welcome freshers and new members to Brackenhurst, ConSoc planned a wildlife walk around the estate. Everyone met outside the campus library at 1pm and grabbed a pair of binoculars each just in case we were lucky enough to spot any birds or other rarity’s that Brackenhurst may have to offer for the day. We began our walk at the back of Brackenhurst main hall, walking through the garden towards the newt pond where great crested newts are known to live and breed.

IMG_3218Newt Pond at the back of Brackenhurst Hall

We then followed the footpath up towards the equestrian centre and animal unit, walking past the cow and horse fields. The gate at the equestrian unit was rather unhelpful as it didn’t want to open for us but luckily a digger came along and opened it, so we quickly walked through before the gate closed again.

The path led us past the equestrian centre and animal unit and round the back of the stables, it was very quiet and peaceful as we followed the footpath between the trees and farmer fields towards the bird ringing.

Once we reached the bird ringing station Joe explained where the nets are put up, along the path and back of the bird ringing area to catch the birds in so they can be ringed. Joe explained what was involved such as weighing, measuring, sexing the birds and putting a ring on their leg to ID them before releasing them again to minimise stress. This topic seemed to gage a lot of interest and quite a few questions were asked.

22164018_1517472438300818_603449104_o                                                Following the path towards the bird hide

After visiting the bird ringing station, we carried on following the path, past the sheep fields and up towards the bird hide. The path became quite a lot muddier the closer we got to hide and everyone’s foot wear was decorated with blobs of mud and leaves once we arrived.

22197576_1517472481634147_1073601537_o                          Walking past the sheep field

The bird hide was locked so instead we all stood on the wooden decking and looked to see if we could spot any wildlife. Joe explained what species of bird were often seen at the hide and that there had been otter spotting in the lake in past years however, we weren’t lucky enough to see anything other than the odd dragon fly and a lone moorhen.

22163783_1517472521634143_423700707_o                                   Taking a break at the bird watching hide

Once we had graced the moorhens company we all started heading back towards campus, the path got a bit muddier as we headed into a slightly wooded area to a small stream which was used for research. Joe explained that zoo biology students and wildlife students might possibly collect water samples from the stream to analyse later in the year and that otters had also been sighted in previous years in the stream as well which was exciting.

The walk ended at around 3pm, with a short wander around the farmer fields before ending back at the gardens on campus. Everyone seemed to enjoy themselves and learnt a little bit about the amazing campus we study on and can explore over the next coming months and years.

Thank you everyone for coming, hope to see you all soon for future events.