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NEWSLETTER 56 LEICESTERSHIRE January 2017 ENTOMOLOGICAL SOCIETY VC55 In this edition Dolichopus at Rutland 3 Water New Flea for VC55 4 Where have all my 5 Peacocks gone? Short-winged Conehead in 6 Rutland Moth trap mutterings 7 Hickling Broad 7 A poor insect season in the 8 garden Course Review: Solitary 8 Bees Buying a VC55 first 9 Bugs on the move 10 A male of the long-legged fly Dolichopus simplex. Long-legged flies Indoor meetings 12 (Dolichopodidae, or “dollies”) are often metallic green. Dolichopus males have programme impressive genitalia, some with ornamented lamellae (visible between the hind legs). Dollies are often abundant in wet places, as the larvae live in damp soil and rotting wood. See the article on p. 3. Photo: Graham Finch. LES Newsletter 56 January 2017 Editorial LEICESTERSHIRE ENTOMOLOGICAL Members enjoyed a superb presentation by Ben Devine SOCIETY on 19 January about the Black to Green project in the Affiliated to: Heart of the National Forest. One of Ben’s tasks is to Leicestershire & Rutland Wildlife Trust encourage biological recording, so he explained how LES members could get involved. I am mentioning Chairman & this talk because it was not scheduled in the last LES Occasional Publications Editor: Ray Morris Newsletter, yet ought to be recorded somewhere. 16 Hinckley Road, Dadlington Leics. CV13 6HU My thanks go to the contributors to the Newsletter. I Telephone: 01455 213569 had to chivvy hard this time - I would really appreciate Email: [email protected] copy ahead of the deadline! (see bottom left). Eventually I received a little more than 12 pages- Secretary: Anona Finch worth, so I have jettisoned the regular Looking for Help 14 Thorndale, Ibstock, Leics. LE67 6JT section (see a previous edition). Email: [email protected] My observations in the last edition about declining Treasurer: insect numbers seem to be supported by Maggie Stuart Poole Frankum and Richard Iliffe in this one. 18 Croft Drive, Wigston, Leicester LE18 1HD Telephone: 0116 288 0236 Availability of Newsletter Email: [email protected] At the 2016 AGM, a discussion on the benefits of Committee Members: membership concluded that the Newsletter should no Dave Budworth 121 Wood Lane, Newhall, Swadlincote longer be freely and immediately available to non- Derbys. DE11 0LX members (as it currently is, via NatureSpot). We Telephone: 01283 215188 decided to release the front and back pages only, Email: [email protected] containing the list of articles and the indoor meetings Maggie Frankum programme. The full newsletter would be publicly 3 Chapel Lane, Knighton, Leicester LE2 3WF available after a two year embargo. Telephone: 0116 270 5833 Email: [email protected] Peter Patrick The Hollies, Holly Street, Stapenhill, Burton on Trent, L & R Wildlife Recording Conference Derby DE15 9ET Telephone: 01283 548704 Sunday 26 February 2017, 10:00 a.m. Email: [email protected] The Rothley Centre, Mountsorrel Lane, Newsletter Editor: Rothley, LE7 7PR Steve Woodward 19 Highfield Road, Groby, Leicester LE6 0GU Join us for the annual conference for talks on a variety Telephone: 0116 287 1679 Email : [email protected] of natural history subjects as well as the opportunity to chat to County Recorders and see stands from a wide Publications downloadable from: variety of local natural history groups. www.naturespot.org.uk/content/leicestershire- entomological-society The programme allows for long tea and lunch breaks © 2017 Leicestershire Entomological Society so that those attending have plenty of time to view the various stands and talk to others. The editor will be happy to receive articles, short notes The event is free, but those wishing to attend must and photos (in focus please!) about insects or other book a place. invertebrates in Leicestershire and Rutland, also news of members’ activities further afield. Photos to be sent Contact Nathalie at the Leicestershire and Rutland separately please at high resolution. Unless otherwise Wildlife Trust either by email [email protected] or credited, photos are by the author of the article. telephone 0116 248 7362. Next Copy Deadline: 5 Sep 2017 2 January 2017 LES Newsletter 56 Provisional status of Long-legged Flies popularis, which seem to have “leg-warmers”. The at Rutland Water species have been identified by the author with specimens retained for future confirmation by others. The nomenclature used in this report is that published The use of a malaise trap 2014-2016 (maintained by by the Dipterists Forum (DF, 2016) Adrian Russell) has allowed sorting of a large number Currently the British Dolichopus list stands at 53 (DF, of insect families. Amongst these are the small (up to 2016) of which 23 have been provisionally recorded 8 mm) metallic flies (with yellow or black legs) with at Rutland Water (Table 1). Two further species (D. the discal vein having a marked bend (see front cover). longicornis, D. pennatus) have been recorded from These belong to the Dolichopus genus of the elsewhere in VC55 (LRERC database) giving a Dolichopodidae and are readily recognisable. Species provisional county list of 25. A few of the identified identification is by use of the keys of d’Assis Fonseca species have national distributions that indicate that (1978) which are still reliable (Martin Drake, 2016 they may be scarce (<50 records) although a major pers. comm). After separation of the sexes (the males contributory factor may well be the lack of recorders. have ornamental lamellar genital structures) the first This is particularly relevant to D. plumitarsis which two couplets require recognition of front femur colour apparently has only been recorded in the UK on four (yellow or black) and the presence of black or pale occasions from scattered locations. The record of a postocular cilia. After these the main diagnostic female from Gorse Close in 2014 was recognised using characters are located on the legs (including colour only seven key couplets of simple characteristics variation, numbers of bristles on each part of the legs ending with the discal vein bends being very sharp and any obvious modifications of the tarsi) and the rather than a gentle bend. Unlike the male, this female colour of parts of the antennae. Accordingly the keys of this species does not have modified front tarsi. are easy to use and have been updated to include recent additions/modifications (provided by the Dolichopodidae group of the Dipterists Forum). The identification of some species in this genus is made even easier by the presence of modified Taxon front and mid tarsi, e.g. D. wahlbergi and D. records SK887061 SK880076 SK879061 2015, 2016 Number NBN 2014 SK878086 Heron Bay 2015 Gorse Gorse Close 2014 Egleton Meadows North Arm Marsh Number Number examined D. agilis + 17 20 D. andalusiatus + 1 29 D. arbustorum + 1 51 D. brevipennis + 7 702 D. caligatus + 1 15 D. claviger + 7 140 D. clavipes + 1 160 D. discifer + + 78 411 D. festivus + + 16 1003 D. griseipennis + + 2 1225 D. latilimbatus + 2 632 D. linearis + 5 50 D. migrans + 1 45 D. nitidus + 1 51 D. plumipes + + 22 1998 D. plumitarsis + 1 4 D. popularis + 11 163 D. rupestris + + 17 137 D. signifer + 2 96 D. simplex + + + 40 656 D. trivialis + + 68 1136 D. ungulatus + + 30 2538 Figure 1: Records of all Dolichopus taxa on the NBN D. wahlbergi + + 49 592 Gateway (Data courtesy of the NBN Gateway, Crown Table 1: Provisional list of Dolichopus at Rutland Water Nature Reserve. copyright and database rights 2011 Ordnance Survey 1000179551). 3 LES Newsletter 56 January 2017 The highest number of species (22) was obtained from accessed 19/01/2017, Figure 1) indicates that our area Egleton Meadows where the trap was run on 12 is poorly represented. This is further emphasised by occasions during 2015 and 2016 at the edge of a the general paucity of records for the genus in local wildflower meadow adjacent to a boundary hedge. archives (68 of 11 species). The varied habitats at The North Arm Marsh was only sampled on two RWNR suggests that several more species await occasions during the same week in 2014 but was not discovery and that other sites, especially along the Soar continued because of the enormous numbers of insects Valley, may also benefit from such surveying. captured during each two-day run but would be worthwhile sampling on occasions in future years over References perhaps 24-hour trap periods. Surprisingly the six traps run at Heron Bay in 2015 gave only a single male DF 2016. An update of the 1998 Checklist of Diptera Dolichopus simplex (see front cover) despite other fly of the British Isles (Updated 15 March 2016). orders, including members of other Dolichopodidae, Dipterists Forum. being plentiful. d’Assis Fonseca, E.C.M. 1978. Diptera: Orthorrhapha The likelihood of new VC55 species is high as the Brachycera – Dolichopodidae. RES Handbooks for national map of all Dolichopus records (NBN Gateway the Identification of British Insects, 9(5). Ray Morris The Forester Adscita statices is a day-flying moth with beautiful metallic blue-green wings. Its English name recalls the coats worn by foresters, rather than a liking for forests. It is most often seen in old meadows, where its foodplant Common Sorrel grows - such as Herbert’s Meadow and Lea Meadows in Charnwood. It usually flies in June. In recent years, good numbers have been seen at Rough Hill at Newtown Linford, with one or two turning up in nearby Bradgate Park. The moth is scarce both nationally and locally. Populations are small and seem to fluctuate precariously - Adrian Russell reports that not one was reported from Herbert’s Meadow in 2016, yet 2015 was as good a year as any for the Forester across the counties. Ed. Photo: Gianpiero Ferrari FRPS New Flea for VC55: of jackdaw (Corvus monedula) but has also been recorded from the nests of other passerines (see Whitaker 2007).