Tuesday, October 23, 2007

Western Conifer Seed Bugs


On 11 November 2006 I found two Western Conifer Seed Bugs (Leptoglossus occidentalis), one inside the house and one outside (see photographs). They were tame and easily handled, and I was able to take many images.

Dwayne Sabine of the New Brunswick Department of Natural Resources (DNR) says this: “As near as I have been able to determine, the first report of Western Conifer-seed Bug in the province was on 12 July 1999 at the conifer seed orchards at Kingsclear [near Fredericton], and from Fredericton a few times thereafter (Danny O'Shea, DNR). Tony Thomas also found it in Fredericton, on October 27, 2004. It apparently showed up in Ontario in the mid-1980s and in Quebec in 2003. Its distribution and abundance in NB is probably unknown.”

The original range of Leptoglossus was confined to the western third of North America, but is now expanding its range eastward. The insect can be a nuisance because the adults enter buildings looking for a warm place to spend the winter. However, they will not feed or cause damage to fabrics, wood or anything else.

Thursday, October 18, 2007

The case of the disappearing moth


This Large Yellow Underwing (Noctua pronoba) appeared on the wall under my porch light. I grabbed it and, while I held it on my hand, it disappeared before my eyes in a ghostly transformation! Pictures don't lie, do they? Now you can say you've seen a picture of a ghost moth!

Wednesday, September 26, 2007

Virginia Ctenucha, a day-flying wasp moth






The Virginia Ctenucha (Ctenucha virginica) is a large, common day-flying wasp moth in the Subfamily Ctenuchinae (Wasp Moths) in the family ARCTIIDAE (Tiger Moths). The body is metallic blue and the head and sides of the collar are orange. It feeds on grasses, sedges and irises. These pictures were taken at a Christmas tree farm on Upper Woodland Road south of Stanley on 6 July 2006. It's not often that you find and are able to photograph a moth emerging from a pupa.

The other moth species (seen here mating on a leaf, 10 August 2006 in Fredericton) is a look-alike, which I had misidentified as a Virginia Ctenucha. It is a Yellow-collared Scape Moth (Cisseps fulvicollis), of the same subfamily as Ctenucha, and is common to abundant in our area. The body is bluish black with an orange collar that forms a narrow band behind the black head. Scape moths eat grasses, lichens and spike-rushes.

Tuesday, September 11, 2007

Pelecinid wasps in my backyard





This large black wasp with the incredibly long abdomen is a Pelecinid Wasp (Pelecinus polyturator), the only member of the pelecinidae in North America. These are females, as the smaller males are seldom seen. Pelecinids parasitize of the grubs of June beetles, which are those white C-shaped grubs that you dig up in your garden. The female uses her long abdomen to probe into the soil and lay eggs on the grubs. I found and photographed these three different females in my yard last year (2006), but I haven't seen any this year.

Edit 27 Jan 08: With the help of BugGuide, I have identified the image of a small black wasp as a male pelecinid. See above.

Monday, August 20, 2007

A harvestman eats a fly




We were in Ferry Beach State Park in Old Orchard Beach, Maine, on 11 August when I spied this tiny drama taking place. One of the kids present was fascinated and another couldn't care less. A harvestman (Order Opiliones) was sucking the juices out of a large fly.

Eventually it got nervous and dragged the fly to a lower leaf, where it continued feeding.

I returned an hour or so later, and the harvestman was finished its meal and was resting on a nearby leaf. (The conical structure beside its body may be a gall produced by a gall wasp - see comment for correct id.)

Tuesday, August 14, 2007

More on Gypsy Moth




A holiday in the Bar Harbour area of Maine last week produced these images of mating European Gypsy Moths (Lymantria dispar). This female crawled to a sheltered spot under a board behind a shed at a campground. She pupated (see the image of the dark mass with a shed larval skin beside it), then emerged as a large white adult. The females don't fly, so she moved a short distance away, emitted her pheromones, and attracted a much smaller, brown male. After mating (next image), she deposited her eggs close by (third image). The egg masses can contain an average of 500 eggs.

Thursday, August 2, 2007

NB Crane Flies



Phantom Crane Fies (Bittacomorpha clavipes) are an amazing sight when seen drifting along a wooded trail with their legs outstretched. The white bands on their black bodies and legs give them the appearance of a series of unconnected mid-air dots. Two are shown here mating. These flies are in the family PTYCHOPTERIDAE, while other, more common crane files, such as this Pedicia Crane Fly (Pedicia sp.) are placed in the TIPULIDAE. These 2 images were taken about this time last year.