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MIGRANT LOCALITY ODONATA 6411 VICE-COUNTY NAME SOURCE D ALTITUDE (mattes) . NONAESIDENT SFR Ad co ow IA sa bedlam OM Other. non-resMent Odonata species MOVEMENT OF RESIDENT SPECIES . SPECIES 11 WEATHER CONDITIONS HAB/TAT COMMENTSAND OTHER GROUPS eg BUTTERFLIES, BIRDS CONTINUE OVERLEAF IF NECESSARY Figure 13. RA74 migrant recording form, 1992 FIELD MUS LITERATURE upcdiAsc Creaotkeptt erytkresa 3601 ESTIMATED commENTs NUMBERS WIND SPEEDAND DIRECTION TIME OF DAY SKETCH MAP OF SITE INDICATE SCALE, DIRECTION OF NORTH, AND DIRECTION OF MOVEMENT 124 GRID REFERENCE V-c No. RECORDER(S) CARD COMPILER NO. NO. MO,Ia Ez KEY TO COLUMN HEADINGS : try* Ad ADULT Co COPULATING PAIR Ov OVIPOSITING MOM FEMALE La LARVA Ex EXUVIA 'Em PRE-FLIGHT EMERGENT ESTIMATED NUMBERS : A 1 -B 2-5 C 6-20 D 21-100 E 100-500 F 500* (ENTER LETTER IN APPROPRIATE BOX(ES). IF ESTIMATE IS NOT AVAILABLE, ENTER 'X'.) Biological Records Centre November 1991 R474
Particularly in the case of resident species, but also for vagrants, there is much scope for examining the condifion of individual dragonflies, particularly with respect to evidence of breeding behaviour. For species of Anisoptera, the inferior appendage of the male leaves 'copulation marks' (a pair of small circular impressions on either side of the junction of the compound eyes) on the female during mating. In some males which have mated, distinctive scratch marks are left on the dorsal surface of the abdomen where it has been clasped by the female. In those libellulids which possess a blue abdominal pruinescence, this may be rubbed off to reveal two dark patches dorsally. A layer of fine sediment coating the terminal portion of the abdomen of a female dragonfly may be indicative of earlier oviposition (Cham 1990). The benefits of careful monitoring of single sites for Odonata have been discussed under Methods of recording. If sufficient sites are studied, monitoring will provide the fine detail for understanding regional and year-to-year variations in phenology which may help elucidate changes in geographic distribution. It will also provide a yardstick against which to measure such changes. There are several species for which there is evidence of an extension of their range in Britain and/or Ireland, notably Orthetrum cancellatum, S. sanguineum and A. mixta. A further species, Anax imperator, may be undergoing a similar extension, although this is questionable at the moment, whilst another species, I.pumilio, is clearly re-establishing itself in regions from which no records have been received for many years. To provide detailed information aboutthese, and possibly other, species (including contractions in range) will require geographically wide-ranging observations with increasing precision and regularity. 125
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Cover photograph: Aeshna juncea Ins
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@ NERC Copyright 1996 ISBN 0 11 701
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FOREWORD Having been on the fringe
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ACKNOWLEDGMENTS The following list
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Howard, G.; Howard, LW; Howe, M.; H
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Walker, D.S.; Walker, FA; WaLker, I
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CHECKLIST The following checklist i
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Aeshna mixta Latreille 1805 Aeschna
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THE BRITISH AND IRISH ODONATA IN A
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of distributions of dragonflies usi
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I 00 o o Figure 3. Map of coverage
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,o " Figure 5. Map of coverage at t
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FIELDWORK AND DATA MANAGEMENT METHO
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areas, and encouraged in this by bo
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Table 3. Distribution of each speci
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Table 4 (con°. Vice-county distrib
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Table 4 (cont). Vice-county distrib
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Computerisation and validation Havi
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dominance of one individual over an
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RESIDENT SPECIES Description Habita
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Calopteryx splendens (Harris) Bande
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Description Flight periods Status a
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Description Lestes dryas Kirby Scar
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Platycnemis pennipes (Pallas) White
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Pyrrhosoma nymphula (Sulzer) 1975-9
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Erythromma najas (Hansemann) 1975-9
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Coenagrion mercuriale (Charpentier)
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Coenagrion scituluni (Rambur) Daint
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Coenagrion hastulatuni (Charpentier
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Coenagrion lunulatum (Charpentier)
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Coenagrion armatum (Charpentier) No
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Coenagrion puella (Linnaeus) Azuxe
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Coenagrion pulchellum (Vander Linde
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Enallagma cyathigerurn (Charpentier
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Ischnura pumilio (Charpentier) Scar
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Ischnura elegans (Vander Linden) 19
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Ceriagrion tenellurn (Villers) 1975
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Aeshna caerulea (Strom) Azure hawke
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Aeshna juncea (Linnaeus) Common haw
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Montiaghs Moss, near Aghalee, Co An
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Sundon Springs chalk quarry, near L
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PLATE 1 Calopteryxvirgo adult PLATE
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PLATE 13 Libellula fulva adult PLAT
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Aeshna mixta Latreile Migrant hawke
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Aeshna cyanea (Muller) Southern haw
Page 95 and 96: Aeshna grandis (Linnaeus) Brown haw
Page 97 and 98: Aeshna isosceles (Muller) Norfolk h
Page 99 and 100: Anax imperator Leach Emperor dragon
Page 101 and 102: Brachytron pratense (Muller) Hairy
Page 103 and 104: Gomphus vulgatissimus (Linnaeus) 19
Page 105 and 106: Cordulegaster boltonii (Donovan) Go
Page 107 and 108: Cordulia aenea (Lin.naens) Downy em
Page 109 and 110: Somatochlora metallica (Vander Lind
Page 111 and 112: Somatochlora arctica (Zetterstedt)
Page 113 and 114: Oxygastra curtisii (Dale) Orange-sp
Page 115 and 116: Libellula quadrimaculata Linnaeus 1
Page 117 and 118: Libellula fulva Mailer Scarce chase
Page 119 and 120: Libellula depressa Linnaeus 1975-90
Page 121 and 122: Orthetrum cancellatum (Linnaeus) 19
Page 123 and 124: Orthetrum coerulescens (Fabricius)
Page 125 and 126: Sympetrum striolaturn (Charpentier)
Page 127 and 128: Sympetrum sanguineum (Muller) Ruddy
Page 129 and 130: Sympetruni danae (Sulzer) 1975-90 o
Page 131 and 132: Leuconhinia dubia (Vander Linden) W
Page 133 and 134: IMIVLIGRANTS AND ACCIDENTAL SPECIES
Page 135 and 136: POSSIBLE ADDITIONS TO THE BRITISH A
Page 137 and 138: SEASONAL OCCURRENCE PREVIOUS REPRES
Page 139 and 140: 700 600 500 400 300. 200 100 0 90 8
Page 141 and 142: 70 60 50 40 30 20 10 90 80 70 60 50
Page 143 and 144: Finally, differences in recorder be
Page 145: ODONATA LOCALITY 6411 V10E-COUNTY N
Page 149 and 150: conditions and which may be of grea
Page 151 and 152: 1960s from its single locality alon
Page 153 and 154: pond. One of the authors did this o
Page 155 and 156: REFERENCES Aguilar, J. d', Dommange
Page 157 and 158: Gabb, R. & Kitching, D. 1992. The d
Page 159 and 160: Coenagrion rnercuriale (Charpentier
Page 161 and 162: Dee'. Transactions of the Natural H
Page 163 and 164: Circumboreal Occurring in a band en
Page 165 and 166: Marl A whitish clay soil with a hig
Page 167 and 168: Vulvar scale WATCH Weald Wheel posi
Page 169 and 170: Appendix 2. LIST OF PLANT NAMES Pla
Page 171: Libefiula depressa 5,6,14,17,18,19,
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