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Photo#183368
Oviposited eggs - Gyponana

Oviposited eggs - Gyponana
Racine, Racine County, Wisconsin, USA
Size: Each slit approx 4mm +/-
One of 30 twigs I am monitoring. Eggs are visible inside the slits.

Images of this individual: tag all
Oviposited eggs - Gyponana Oviposited eggs - Gyponana Obvious signs of hatching - note lowest slit  5-24-2008 - Gyponana Gyponana nymph - Gyponana Gyponana nymph, probably less than 2 days old - Gyponana Gyponana instar - Gyponana Gyponana instar - Gyponana 2d Gyponana instar - Gyponana Gyponana instar - age 21 - Gyponana Gyponana instar - age 31 - Gyponana Life Cycle of Gyponana - Day 34 - Gyponana Gyponana nymph and instar exoskeletons - Gyponana

Moved
Moved from Gyponana.

Moved
Moved from Gyponinae.

Well, I have one hatchling so far....
....and Andy Hamilton is correct, it's gyponana. Since many feel these look like cicada scars, my question now is: Are gyponana known to be opportunistic layers?

 
I think it's much more likely...
that you've discovered a leafhopper that cuts slits in woody stems! I was pretty sure that these weren't tree cricket scars, but I wasn't totally sold on them being cicada scars either. The cicada scars I've seen have been much longer (around 1 cm) and are often contiguous. These slits look much more like the buffalo treehopper egg slits Cranshaw shows on p. 367. If a treehopper can make slits like this, it seems reasonable that a big leafhopper like Gyponana could too.

That said, I just did a quick web search to see what I could find about Gyponana egglaying, and this is all I came up with (in a paper called "Bionomics of Leafhoppers"): "Eggs of Colladonus clitellarius are deposited in leaves of trees, and the newly hatched nymphs drop to herbaceous vegetation beneath, feeding preferably upon dandelion. Gyponana mali, G. contractura, and probably other species of Gyponana have a similar habit." The citation for the part about Gyponana is: DeLong, D. M. 1942. A monographic study of the North American species of the subfamily Gyponinae exclusive of Xerophloea. Ohio State Univ. Press Biol. Set. 5:1-187. I may pursue that at some point, but the "probably" clearly indicates that the egglaying habits are not known for all Gyponana species.

Nancy, your findings definitely deserve mention in the book that Noah and I are working on. Please email me at ceiseman@gmail.com about the possibility of using one of your photos in the book.

Thanks,

Charley

With 30 twigs, you've quite an ambitious project!
Good for you, sharp eyed Nancy. Bet you'll have some interesting discoveries!

 
Ambitious project
I agree, Ron. I realize I'm going to need a lot of luck to catch a glimpse of what comes out of some of these slits, punctures, splays,and rows!!! The good news, and remarkable to me since I am a new bugger, is that 24 of the twigs are all located on one side of a row of greenery that is only 1/2 block long !

 
Well, that should make it a bit more manageable.
I look forward to your future posts. Once, I read that 90% of immatures haven't been connected to the adults, so your efforts are indeed a step in the right direction.

 
Hey, Nancy....
Didn't you folks get the 17-year cicadas last year? Well, then, there you go:-)

 
Truly a work of art
Hi Eric,
I just love this set of eggs...it's darn near architectural. Re: the 17-year Cicadas. I never did find any here :( although they were found in other spots in Racine. There are visible eggs in these slits...will they hatch this summer? ....and does the nymph immediately head down underground?

 
Not sure.
Hm-m-m, well, maybe an "annual" cicada then....I have heard that yes, the cicada nymphs will fall from the branch and head immediately underground...and I recently read that the branch will break off (at least with the 17-year cicadas) and 'then' the nymphs will hatch once the branch is on the ground. I will be very intrigued as to what emerges:-)

 
cicadas
Looks like cicada scars to me, especially with the eggs sticking out a bit, though I'm not sure about the timing. I thought periodical cicada nymphs fall out the same season they are laid (they don't overwinter all exposed like that). I think most of the time the nymphs drop out well before the branch breaks. So, annual cicadas?

 
Do you think the nymph
...is a cicada? With the long back legs, spines on the legs, extremely long antennae, shape of the body and especially the position it has assumed, it really looks like Oecanthinae to me. This nymph definitely hatched from one of the eggs in this twig.

 
Nymph
Here is a photo of a 1st instar cicada nymph--sure doesn't look like yours! This is troubling, since your egg slits don't look how tree crickets' are supposed to (little round punctures sealed in with excrement). Do you have anything to feed your nymph? ...And is it at all possible that there was a single tree cricket egg inserted in the twig somewhere, or do you actually see that one of these eggs is empty now?

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