Comments on: Unknown Caterpillar from Florida on Annona salzmannii is Fruit Piercing Moth Caterpillar

By: kkroeker

kkroeker — Tue, 18 Aug 2009 18:50:40 +0000

Hi again Eric:

Gonodonta nutrix is certainly a good possibility. I had it on my short list for a while but I couldn’t find any descriptions or images with the striped/vermicular background pattern that is evident in your photo. They generally appear to be black or dark brown, with yellow or orange spots. Hence my suggestion that it was likely one of the other species which do show striped patterns with reddish spots. However, I can’t conclude that a striped pattern does not exist for G. nutrix as well, and I couldn’t find much information on the other species (possibly an indication that they are less of a nuisance). There is an excellent site at: http://janzen.sas.upenn.edu/caterpillars/database.lasso that has caterpillar photos of a number of Gonodonta species (search for Gonodonta). If you are interested in more information about G. nutrix the USDA has posted an interesting report (pdf) entitled “Owlet Caterpillars of Eastern North America (Lepidoptera: Noctuidae)” that can be accessed at: http://www.eeb.uconn.edu/people/wagner/USDA%20Noctuid%20Guide%20October%202008.pdf . It provides a good description of the G. nutrix caterpillar, as well as life history and pest status information. Interestingly, it suggests that the fruit-piercing adults are a greater threat to orchards than the leaf-munching caterpillars. Good luck! K

By: Eric Bronson

Eric Bronson — Sun, 16 Aug 2009 23:49:25 +0000

Thanks,
I hope they don’t decide to make a home in my yard. I’ve seen them at my friend Noel’s house in Coral Springs (where the photo was taken), Jeff’s in Tamarac and the RFVC’s (Rare Fruit & Vegetable Council of Broward) 208 Garden. We all grow many species of Annonas and Annonaceae. They don’t seem to be a real pest though unless it’s a seedling. This may be why “They do not cause significant damage because they are heavily parasitized by a braconid wasp.” from Insect/Mite Management in Annona spp. (http://edis.ifas.ufl.edu/IG166) University of Florida

By: kkroeker

kkroeker — Sun, 16 Aug 2009 23:08:06 +0000

Hi again Eric:

I forgot to mention that if you follow the link provided you will see that (in Costa Rica) the Annonaceae are given as host plants for G. bidens. That was a good and useful observation on your part. K

By: Eric Bronson

Eric Bronson — Sun, 16 Aug 2009 22:25:09 +0000

Thanks for the proper ID kkroeker!! I appreciate your help. I confirmed it here http://bugguide.net/node/view/69690/bgimage
Mr. Bob Patterson had this to say,
“Citrus Fruit-piercer, Gonodonta nutrix. Wagner Field Guide p.371. Breeding year-round in southern Florida, Custard Apple (Annona) is a larval food plant.”

thanks again,
Eric Bronson
Tamarac FL, US

By: kkroeker

kkroeker — Sun, 16 Aug 2009 21:43:54 +0000

Eric:

I am fairly certain this is a Fruit-piercing Moth caterpillar (Noctuoidea: Erebidae: Calpinae) in the genus Gonodonta. Alternative taxonomic systems place this genus in the sub-family Catocalinae. Caterpillars of this group tend to be variable and several species look similar to begin with, so nailing down the species is difficult. To me it looks most similar to G. bidens, but it could also be G. pyrgo or G. incurvata. If it is any of those three then it does belong in Florida. If it is a similar species from further south (there are a few) then it is a visitor, or perhaps an invasive. One example of a G. bidens caterpillar can be found at: http://www.tulane.edu/~ldyer/lsacat/index_frames.htm (click on ‘Noctuidae’ to get to a species list). K