We are now including Three Pages of information on Exuvia
The first page is for U.K.species,now we are
adding pictures of Emergents,where we have them.
The second page is the Japanese exhibits,from Yoshihiko.
The third page contains a copy of the Field Notes on Exuvia,written by Gill Brooks,with some extra data from other sources.(NOTE: these two pages are about 110kbs each,which may make a slow download!)
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TEST SHOTS OF EXUVIA USING A SCANNER.
comparison chart below:- 276kbs!
Top row---Black Darter,Red Darter,Common Darter and Crocothemis.
Lower row---Keeled,Cancellatum,Depressa.
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Demonstrates size and shape. 20 U.K.species shown.
Aeshna grandis
Libellula quadrimaculata
wide labium
Flattened spines 4 - 8
stipes on head and thorax
Furry end
over 38 mm
banded legs
Anax Imperator
Sympetrum
danae
in excess of 50mm Anax emergent
short spines
flat head
half of segment 9
Brachytron pratense
Orthetrum
cancellatum
smallhead
more than 20mm
long body
no spine on segment 7
Brachytron Emergent
Cancellatum with
Exuvia
Sympetrum striolatum
Orthetrum coerulescens
long spines
less than 20mm
twice segment 9
usually covered with mud
small spine on segment 7
Cordulia aenea
Aeshna cyanea
3 plus dorsal spines
Long,narrow labium
diagonal marks on thorax
Libellula depressa
Leucorrhinia dubia
Teeth deep and rounded
3 dark lines on underside
segments 4 to 8
of abdomen
misc.
Gomphus vulgatissimus
abdomen wide and flat
Aeshna juncea
Pyrrhosoma nymphula
wide labium
cross mark
no marks on thorax
Somatochlora metallica
Aeshna
mixta
4 spines
less than 38mm
dark spots on dorsa
row of dotsl
abdomen
no marks on thorax
Sympetrum sanguineum
Calopteryx splendens
segment 9 equal to spines
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