Carmarthenshire Moth & Butterfly Group
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CARMARTHENSHIRE MOTH & BUTTERFLY GROUP NEWSLETTER ISSUE No.8 JULY 2007 Editor: Jon Baker (County Moth Recorder for VC44 Carms) INTRODUCTION Welcome to the 8th Newsletter. What an incredibly awful summer we are having. Not sure that I can remember a day in the last 7 weeks when it hasn’t rained, or been cold, or windy… or raining, cold AND windy. Full marks for effort to those of you who have bothered to put a trap out, and even more kudos to anyone who has trapped out “in the field”. Some impressive results have been had by day with the micros, in breaks between the showers. Sam Bosanquet in particular has been busy out and about in unexplored areas of the county, proving that there is so much still to be discovered. His tally of good records included three new county records on the same day. And on the single occasion I put my trap out in the garden this summer, I managed to attract a rather nice migrant (see below), in uninspiring conditions. So there is always hope, no matter how grim the weather. In this edition I look at the few highlights that we have had since the last bulletin, as well as an article on Crambid grass-moths that I hope will be of use and interest. Striped Hawk-moth Hyles livornica RECENT HIGHLIGHTS Records are mine (JSB) if not noted otherwise 25 Ectoedemia intimella New County Record. Swept by day at Drefach (SN3639) by Sam Bosanquet on 19th June. Lives on willow Salix spp. And is one of the more straightforward of this tricky group to identify. 39 Ectoedemia heringi The 2nd County Record. Came to MV at Cynheidre (SN4908) on 10th June. Lives on oak Quercus. Photographed and released. Ectoedemia heringi 132 Incurvaria praelatella The 3rd County Record. Came to MV at Cynheidre (SN4908) on 10th June. Lives on rosaceous herbs. Photographed and released. 163 FORESTER Adscita statices This lovely day-flying moth was seen on several occasions during June in the Gelli area of Rhydcymerau (SN5739) by both Julian Wormald and Martin Lovell. 199 Psychoides verhuella The 3rd & 4th County Records. Caught by day at Pontnewydd (SN4307) on 8th June. Again caught by day on 17th June, this time by Sam Bosanquet near Talsarn (SN7826). This species lives on ferns, especially hart’s-tongue Phyllitis scolopendrium and is much less common here than its close relative P. filicivora. 217 Nemapogon wolffiella The 2nd County Record. Netted by day by Sam Bosanquet near Talsarn (SN7826) on 17th June, and live specimen confirmed by JSB. A nationally scarce species that lives on fungus (e.g. Hypoxylon multiforme) and dead wood. 266 Bucculatrix nigricomella The 2nd County Record. Came to MV at Cynheidre (SN4908) on 10th June. Lives on oxeye daisy Leucanthemum vulgare. Photographed and released. 357 Phyllonorycter stettinensis Leaf mines found at Drefach (SN3639) by Sam Bosanquet on 19th June. Only the 4th County Record. 373 CURRANT CLEARWING Synanthedon tipuliformis One came briefly to pheromone lures at the regular (only) site, Johnstown Water Meadows (SN4019) on 26th June. This is the 6th time this species has occurred here, and it would be nice to have some sightings from another location. It has not been the “easiest” of months for finding and luring clearwings…. 598 Elachista kilmunella New County Record. At least two caught by day on 17th June at Mawnbwll Du Mawr (SN8126) by Sam Bosanquet. Seen, photographed and confirmed by dissection by JSB. Lives on sedge Carex spp. in boggy areas, especially in upland acid heathland. Elachista kilmunella Pleurota bicostella (SDSB) 654 Pleurota bicostella New County Record. Seen and photographed by day on 17th June at Mawnbwll Du Mawr (SN8126) by Sam Bosanquet. A species associated with heath Erica tetralix and bell heather E. cinerea. Another excellent find by Sam. 735 Monochroa tenebrella Seven were seen by day on 19th June along the Cwmann Railway Line (SN5847) by Sam Bosanquet. This is only the 3rd County Record. Lives on sheep’s sorrel Rumex acetosella. 788 Bryotropha politella New County Record. Caught by day on 17th June at Mawnbwll Du Mawr (SN8126) and at Cwm Holdfast (SN7926) by Sam Bosanquet. Seen, photographed and confirmed by dissection by JSB. This species is very tricky to tell from the closely related B. terrella and B. desertella and records need to be confirmed by dissection, I’m afraid. 1001 Lozotaeniodes formosanus Several came to MV trap on 10th June at Llanelli (SN4901), caught by Ian Morgan and identified by JSB. This species is associated with Scots pine Pinus sylvestris and although it is moderately regular in Pembrey Forest, this is only the first (or possibly second) time it has turned up at another site. 1182 Epiblema turbidana New County Record. Caught by day at Pontnewydd (SN4307) on 8th June. This “lumbering” tortricid lives on butterbur Petasites hybridus and possibly winter heliotrope P. fragrans. Photographed and released. 1292 Calamatropha paludella Caught at Pwll (SN4601) by Ian Morgan on 9th June and confirmed from the specimen by JSB, this constitutes the 2nd County Record of this species. See the main article on Crambids below for more information. 1381 Anania funebris A surprise find in 2005 at Betws (SN6412) by Barry Stewart, Ian Morgan has now found a 2nd population. Several seen by day on 12th June in the area southeast of Garn- big (SN5815), near Carmel. Photographed by JSB. This species lives on goldenrod Solidago virgaurea and it is well worth searching for it at other locations along the limestone ridge. Anania funebris 1502 Platyptilia isodactylus The 3rd County Record at MV at Cynheidre (SN4908) on 10th June. Photographed and released. 1739 WOOD CARPET Epirrhoe rivata Very few records of this species, which can be tricky to separate from Common Carpet E. alternata, have been made away from Pembrey, where it is uncommon but frequent. So a record on 19th June, by day, along the Cwmann Railway Line (SN5847) by Sam Bosanquet is a very good inland record from a new 10km square. Photographic proof is preferred of claims from new sites. 2017 SMALL CHOCOLATE-TIP Clostera pigra Larvae found on young aspen Populus tremula at Butterfly Conservation’s Caeau Ffos Fach NR (SN5711) from 24th May onward, by Martin Warren et al . Nearly all records in the county have been from Pembrey, so it is good to know that there are inland populations too. 2038 MUSLIN FOOTMAN Nudaria mundana A thorough search of the toilets at Gelli Aur CP (SN5919) by Ian Morgan on 26th June has turned this species up again. So far the only current population of it in the county. 2250 DARK BROCADE Blepharita adusta Martin Lovell scored the 7th County Record on 16th June at Banc Melyn, Brechfa Forest (SN5440), a new 10km square for this scarce species. 2327 CLOUDED BRINDLE Apamea epomidion The 7th County Record was caught at MV at Cynheidre (SN4908) on 10th June. Lives on various grasses and is surprisingly uncommon in the county. 2396 ROSY MARBLED Elaphria venustula Star moth of the year so far was this totally unexpected find, coming to MV at Erw Las, Llwynhendy on 12th June. Caught by Ian Morgan, it was identified (and photographed and released) by JSB. This species’ distribution is confined to the southeast of England and I have yet to find any previous Welsh records apart from one in 1886 at Port Talbot, Glamorgan (Barry Stewart, pers. comm.). Goes to show that mothing is totally unpredictable. Rosy Marbled Elaphria venustula THE CRAMBIDS OF CARMARTHENSHIRE A Review – by Jon Baker In what I hope will be the first in a series, I am taking a looking here at a family of micro- moths, starting with the Crambinae (Pyralidae), the grass-moths. Some of the most abundant species in Britain, they are common at light traps, and swarm at dusk in grasslands. Walking through any grassy environment on a summer’s evening you are bound to kick up hundreds of these slender little whitish moths. Many of them are surprisingly easy to identify if one takes the time to look closely. I’ve only looked at those species which have occurred in Carmarthenshire so far. There is always the outside chance that other species might be discovered, so if something really doesn’t fit with anything listed below, I will need to see it. There are also a number of other pyralids which superficially resemble crambids – notably Anerastia lotella (which occurs at Pembrey), so do not treat the following as an exhaustive guide. The notes on identification included below are merely tips and are not meant as absolute or comprehensive. The excellent British Pyralid Moths – a guide to their identification by Barry Goater is an essential purchase if anyone wants to take up recording of this family. But the following information and photos should hopefully prove useful too. I’m very grateful to all the skilled photographers who filled in the gaps where I haven’t got photos of my own. The first thing to note with this group is that some of the species are incredibly common, and where they occur can often be super-abundant. Therefore, when faced with an unknown crambid you should first consider which of the very common species it is, and only when you have ruled those out, look at other possibilities. The 6 VERY common species are, in order of ubiquity: Agriphila straminella Chrysoteuchia culmella Agriphila tristella Crambus lathoniellus Crambus pascuella Crambus perlella The following 7 species are much scarcer and can be classed as local: Catoptria pinella Agriphila selasella Catoptria margaritella Agriphila geniculea Agriphila inquinatella Agriphila latistria Chilo phragmitella All other species listed below are classed as county rarities.