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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Nematocera" (Non-Brachycera) » Crane Flies (Tipulomorpha) » Large Crane Flies (Tipulidae) » Tipulinae » Tipula » subgenus Yamatotipula (Tipula subgenus Yamatotipula) » Tipula furca
Photo#220083
Crane Fly - Tipula furca - female
Copyright © 2008 John F. Carr

Crane Fly - Tipula furca - Female
Newton, Middlesex County, Massachusetts, USA
August 31, 2008
Size: 17 mm
Found inside near a frequently-open door in the morning. I don't know if it spent the night inside. It is perched vertically; my camera was rotated.

I tried Chen Young's key and got lost:

1 - Two anal veins reach wing margin (5)
5 - Both anal veins long (6, Tipulidae s.l.)
6 - SC1 absent; apparently 13 segment antennae (9, Tipulinae)
9 - Tarsi longer than rest of leg (10)
10 - Here neither option seems to fit

Images of this individual: tag all
Crane Fly - Tipula furca - female Crane Fly - Tipula furca Crane Fly - Tipula furca - female
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Contributed by John F. Carr on 31 August, 2008 - 9:44am
Last updated 2 September, 2008 - 9:22am

Thank you John
for trying out the key. I can see where the change may needed to improve the key. The image led you to believe that the length of the tarsi are longer than the rest of the leg, but if you measure the specimens you may find that the lenth is very close to or less than the rest of the legs. I am afraid that the image might have skewed the actual lengths of the legs. If you follow #10 of the key you will notice that crane flies in that group have very distinct long tarsi that are noticalbe longer than the rest of the legs. I will add this note when I update the key. The image you have is a female crane fly of Tipula furca . - Chen
… Chen Young, 2 September, 2008 - 9:19am login or register to post comments

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