CVL butterfly list

Twenty species of Dragonfly and Damselfly have been recordred at Chew. The lake doesn't support any real specialities, and even one or two species that might be expected to occur (both resident and migrant species) are missing from the list.  It seems that the next addition could just as likely be a continental species as one which has wandered a few miles from the Mendips or Somerset levels.

In the third column, B indicates that the species breeds every year, and b indicates irregular or historic breeding.

Calopteryx virgoBeautiful DemoiselleOdd individuals here and there - probably breeds in nearby streams
Calopteryx splendensBanded DemoiselleFew records
Lestes sponsaEmerald DamselflyBCommon
Platycnemis pennipesWhite-legged Damselfly(b)No recent records
Phyrrosoma nymphulaLarge Red DamselflyBSurprisingly scarce - seems to be quite localised
Erythromma najasRed-eyed Damselfly(b)Formerly found at Hollow Brook, but no recent records
Coenagrion puellaAzure DamselflyBLocalised and tricky to find amongst the commoner cyathigerum.
Enallagma cyathigerumCommon Blue DamselflyBVery common
Ischnura elegansBlue-tailed DamselflyBVery common
Aeshna mixtaMigrant HawkerBCommon in August and September
Aeshna cyaneaSouthern HawkerBFairly common, though less numerous than mixta.
Aeshna grandisBrown Hawker?Few records
Anax imperatorEmperorBCommon - favours sheltered bays and pools
Libellula quadrimaculataFour-spotted ChaserbRare, but bred in the Grebe Trail pond following an influx in 2000
Libellula fulvaScarce ChaserOne record
Libellula depressaBroad-bodied ChaserBA few recorded every now and then, but never common
Orthetrum cancellatumBlack-tailed SkimmerBCommon on Herriott's and Heron's Green Pools
Sympetrum striolatumCommon DarterBCommon
Sympetrum flaveolumYellow-winged DarterOne in August 94, then seven together in the 95 influx
Sympetrum sanguineumRuddy DarterBVery common - thousands on the wing during peak emergence
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