I found this hornworm on my Pentas. I know that the tomato (Manduca quinquemaculata) and tobacco (Manduca sexta) hornworms will feed on Pentas (and apparently completely ignore the tomato and tobacco growing nearby!!) and last year it was quite a battle for me with those two species.
This one, however, is different. The prolegs are orange, not black/white, the spots are more prevalent than the striping, there are six stripes connecting to a longer head-to-tail lateral stripe, and a purpleish horn. It also demonstrates a strange behavior when disturbed... instead of arching up it's head as if to beg mercy before you squash the evil out of it, it pulls its head *in*, almost as if to make it appear larger and pronounce the eyespots on top, reducing its overall length by ~1/4".
Location: Nehrling Gardens, Gotha, Orange County, Florida
CLOSED: Unknown Hornworm
Awww, sweet thang! That's a Tersa sphinx moth caterpillar. Pentas are their hostplant.
ack, i posted on this last night, definitely a tersa sphinx cat, but apparently it didnt go through!
Xylophanes tersa - Tersa Sphinx - Hodges#7890
http://bugguide.net/node/view/419
http://davesgarden.com/guides/bf/go/1429/
This message was edited Mar 6, 2012 6:39 AM
Yes! Thank you. There's so much on the Manducae that makes it difficult to find details about other hornworms. The lack of larval pictures doesn't help either... I'll be adding these to the DG Bug Guide.
Fortunately for it, the Pentas are in a pollinator garden, though I would rather it munch on the bushy dwarf varieties instead of the tall reds. I hope I can keep some of the Pentas... perhaps it's time to make cuttings =)
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