NEPTICULIDAE: 51 - 84.

63 Stigmella lemniscella, mine in Elm, Birdcage Lane, Oct.28th 2010.

63 Stigmella lemniscella, Apr.16th 2011. Reared from mines on Elm found at Bankhouse wood the previous October. Frustratingly this one wouldn't stay still long enough for a decent shot and when they take flight they can easily disappear in to the tiniest of nooks and crannies. It's always a worry that you can easily lose one that you've just spent 6 months rearing.

66 Stigmella sorbi, mine and larva in Rowan, North Dean wood, June 22nd 09. Easily told from other mines on Rowan by the initial gallery suddenly widening to a blotch.

66 Stigmella sorbi, Norland Bilberry slopes, Apr.9th 2011.One of two captured by day as they flew in the mid-morning sunshine. Thanks to Harry Beaumont for checking this one out.

68 Stigmella salicis, mine and larva in Sallow, Tag Loop, Oct.16th 09.

73 Stigmella trimaculella, vacated mine in a poplar species, Park Wood crematorium, July 28th 2010.



77 Stigmella tityrella, "green island mines" and larvae in Beech, Skircoat Green allotment, Nov.11th 09. The presence of larvae in autumn leaves create green islands which help preserve the chlorophyll, this enables the larvae to continue to feed even after the leaves have fallen. This one was found in one of the leaf recycling bays.

79 Stigmella perpygmaeella, vacated mine in Hawthorn, New Lane, Sept.23rd 09. The diagnostic yellow larva with a pale brown head was observed under a microscope chewing out an exit hole and vacating the mine. This is the only time I have witnessed this behaviour and also this is the only record.

81 Stigmella hemargyrella, mine and larva in Beech, North Dean wood, June 8th 09. The coiled frass in the middle section of the mine separates it from S.tityrella.

84 Stigmella ruficapitella, mines in oak, North Dean wood, July 17th 2010. Eggs laid upperside near the leaf margin.

84 Stigmella ruficapitella (male), Apr.1st 2010. Reared from mines found near Norland village the previous autumn. Similar to other oak feeding stigmellas this one needed to be identified by microscopic examination of the hindwing (see below).

 84 Stigmella ruficapitella (male) hindwing, Apr.2nd 2010. The short, dark, thick, hair-like scales (arrowed) are called androconial scales. They are present in the males only and release pheromones so the female can decide with which one to mate with. In this species they are around one third the length of the fringe.

No comments: