Leaf hoppers have an incomplete metamorphosis. No larval stage. -----Original Message----- From: pbs-bounces@lists.ibiblio.org [mailto:pbs-bounces@lists.ibiblio.org] On Behalf Of Adam Fikso Sent: Wednesday, June 10, 2009 10:28 AM To: Pacific Bulb Society Subject: Re: [pbs] iris fly? This does not look like typical iris borer damage which is usually confined to the edges of leaves early in the year--and the grubs are much bigger--about 4-5 cm-- which go down into the rhizome and hollow it out, at which point the leaves turn watery looking and rot from the inside of the stem outwards. Also, Iris borer in the U.S is much earlier, about April-May in the Chicago area. If I had to suspect a pest from the U.S. I'd think one of the leaf hoppers which tend to do more surface damage to softer parts of the leaves between the veins. Not iris borer from your photos , but you've got me hooked enough to check some other references