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micromoth early stages micromoth early stages tuesday 7 february 2023 cosmopterix pulchrimella since it was first discovered in britain in west dorset in 2001 cosmopterix pulchrimella has spread rapidly initially the main spread was along the south coast but it is now found inland and as far north as cambridgeshire the larvae mine the leaves of pellitory of the wall parietaria judaica forming an irregular blotch the mine initially looks whitish but rapidly turns brown if held up to the light a fine speckling can be seen within the mine the mine shown below is occupied but the larva is often surprisingly difficult to see in this instance it is at the far left hand end of the mine no other lepidoptera are known to mine pellitory in britain but three agromyzid flies have been recorded these all make gallery mines sometimes the gallery mines can be sufficiently contorted that they form a false blotch but the gallery nature of the mine can still be determined and there are distinct frass grains so confusion with c pulchrimella should not occur large quantities of the foodplant are not needed even a small isolated plant can be occupied the attractive moth can easily be bred posted by tony davis at 16 16 no comments email this blogthis share to x share to facebook share to pinterest labels cosmopterix pulchrimella sunday 14 april 2013 coleophora cases on heather now is a good time to search for the two coleophora species that feed on heather coleophora pyrrhulipennella cases are black and made of silk whereas those of c juncicolella are made from fragments of heather and are incredibly cryptic both species are best found by sweeping heather the pyrrhulipennella case is sufficiently obvious that it can be found by searching through the swept detritus however the cases of juncicolella are so difficult to find that the best technique is to place your sweepings in a container overnight and you ll then find that the larvae have climbed up the sides it may or may not be of note that i swept lots of cases from an ungrazed heath two days ago but none at all with a similar amount of effort on a grazed heath today posted by tony davis at 16 24 2 comments email this blogthis share to x share to facebook share to pinterest labels coleophora juncicolella coleophora pyrrhulipennella saturday 30 march 2013 biselachista cinereopunctella despite the cold weather biselachista cinereopunctella larvae seem to be about on schedule the larvae mine glaucous sedge carex flacca and the attractive larva is very distinctive the moth has a preference for plants growing in shaded situations posted by tony davis at 15 03 no comments email this blogthis share to x share to facebook share to pinterest thursday 4 october 2012 gymnancyla canella a rare species but easy to find if it s present the larva feeds on prickly saltwort salsola kali and is reputed to be the only species to do so although there are bound to be some polyphagous species that will use it occasionally the larva feeds initially in the stem or a side shoot but later may feed externally in a web which is made conspicuous by the sand grains that become trapped in it larval web posted by tony davis at 13 40 no comments email this blogthis share to x share to facebook share to pinterest labels gymnancyla canella prickly saltwort thursday 27 september 2012 ectoedemia albifasciella there are four species of ectoedemia which mine the leaves of deciduous oak but this is the only one around at the moment many will already be vacated if the larva is still present it has a pale head the mine typically starts as a narrow linear gallery that follows a vein and is later absorbed into the blotch but the linear frass can still be seen the gallery occasionally doesn t follow a vein as can be seen on two of the mines in the leaf below posted by tony davis at 15 59 no comments email this blogthis share to x share to facebook share to pinterest labels ectoedemia albifasciella stigmella plagicolella it seems to be an awful autumn for nepticulid mines so far hopefully things are just running late one of the few species which seems to be reasonably easy to find at the moment is stigmella plagicolella this is also one of the easiest mines to identify as it is the classic tadpole mine with a narrow gallery leading to a blotch it is found on blackthorn and related species of prunus posted by tony davis at 15 37 no comments email this blogthis share to x share to facebook share to pinterest labels stigmella plagicolella acrolepia autumnitella it s been a long time since my last post for which my apologies to the very small group who follow this blog there s lots happening at the moment and i regularly submit pictures to the sussex moth group web site so do keep an eye on that although i appreciate you won t know what i ve submitted recently and there isn t room in the caption to cover information about specific identification features anyway i ll try to post at least some of the pictures on here to give you some things to go and hunt for do mention this blog to anyone you think might be interested the more people there are reading it the more pressure there is on me to actually post stuff anyway i ll kick off with acrolepia autumnitella this is a good one to look for at the moment as you can breed the adult through very quickly and with minimal effort the larva mines bittersweet aka woody nightshade solanum dulcamara it is an unusual mine for a lep as almost all frass is ejected and the mine therefore looks rather like some fly mines if the mine is tenanted the larva is clearly not a fly maggot the picture above is an early mine that below is almost full size note that there are characteristic patches where there is still a thin layer of green within the mine posted by tony davis at 15 04 no comments email this blogthis share to x share to facebook share to pinterest older posts home subscribe to posts atom followers blog archive 2023 1 february 1 cosmopterix pulchrimella 2013 2 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