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Pandemis pyrusana “Pandemis Leafroller Moth” Tortricidae

Clinton, MT
July 25, 2015
Robert Niese

Pandemis leafrollers are common in the west and are considered a pest on commercial apple, cherry, plum, and pear trees. As larvae, they roll up the sides of leaves into a tube along the mid-vein creating a shelter from predators. Larvae born early in the summer will pupate inside these shelters, but late summer larvae overwinter under bark before emerging to feed on fresh buds in the early spring. In addition to feeding on commercial fruit trees, this species is also known to chow down on alder (Alnus), willow (Salix), birch (Betula), dogwood (Cornus), aspen (Populus tremuloides), currants (Ribes), roses (Rosa), and honeysuckle (Lonicera), all of which are very common here in western Montana.

Catoptria latiradiella “Two-banded Catoptria” Crambidae

Clinton, MT
July 25, 2015
Robert Niese

This small species of Crambid moth is restricted to boreal and montane forests in North America. Its larvae are believe to feed exclusively on mosses. As adults, these moths are active both in the day and at night and are regularly seen at lights in July and August.

Phaneta infimbriana “Silver-spotted Wormwood Moth” Tortricidae

Clinton, MT
July 25, 2015
Robert Niese

These dainty Tortricids are found throughout the Northwest between July and August. As larvae they feed primarily on plants in the family Asteraceae, particularly members of the genus Artemisia, which includes sagebrush, tarragon, and wormwoods. According to the Tortricidae foodplant database, the larvae of this species have only ever been recorded on Artemisia ludoviciana which is a very common weedy species in all our open, semi-dry habitats here in the PNW.

P1240396

Nematocampa resistaria “Horned Spanworm Moth” Geometridae, male

Clinton, MT
July 25, 2015
Robert Niese

This species of inch-worm moth is found throughout the US, except the southwest, and exhibits striking variation in morphology across its range. Males and females are also quite dimorphic. Males tend to be yellower and have dark patches at the base of their forewings while females almost always have a white ground color. Perhaps the most intriguing aspect of the morphology of this species are the horns of their caterpillars. Look for these crazy caterpillars in mixed hardwood/conifer forests in the early summer here in the PNW.

Enicospilus “americanus” species complex, Ichneumonidae

Clinton, MT
July 25, 2015
Robert Niese

This elegant wasp is a parasitoid of Saturnid and Sphingid moth caterpillars. Females lay their eggs on the bodies of caterpillars and the larvae then grow inside the caterpillar, consuming it and taking its place inside its cocoon. Adults visit flowers at night and are commonly seen at lights. We spotted this individual at our mothlighting event for National Moth Week!

Leucoma salicis “Satin Moth” Lymantriidae (now Erebidae)

Clinton, MT
July 25, 2015
Robert Niese

 

Here’s another species from our National Moth Week event

with the Missoula Butterfly House. Satin Moths are native to the Palearctic, from the British Isles to Japan, but was introduced to the US in the 1920s. The moth was originally introduced to the Northeast, but specimens have been collected from the Pacific Northwest quite regularly in the past years, suggesting that a new population may have been introduced here recently. Their larvae eat the leaves of aspen, poplar, and willow until they’re fat enough to overwinter under the bark of their host trees. Adults are nearly pure white and hard to confuse with any other local moth species. And they’re so darn cute!

Leptogaster (coloradensis?) “Colorado Slender Robber Fly” Asilidae

Clinton, MT
July 25, 2015
Robert Niese

 

When we first saw this odd fly on our sheets during our mothlighting event last month, we thought it was a parasitic wasp! Turns out its a Leptogaster robber fly, a group of flies that are very poorly studied. Montana only has records for two species of Leptogaster flies, but it’s possible that several others occur here, and others may still be new to science. Robber flies are the tigers of the insect world and this individual likely joined us at the sheets to partake in a late night snack of gnats and midges.

Lebia viridis (cyanipennis) “Western Colorful Foliage Beetle” Carabidae

Clinton, MT
July 25, 2015
Robert Niese

This awesome carnivorous beetle joined us at the sheets during our Mothlighting event for National Moth Week with the Missoula Butterfly House. These colorful Carabids didn’t come to the light looking for sex though. They were on the hunt! This guy was speedily chasing after gnats and other small insects that we had attracted to our lights. In my opinion, watching these tiny predators was just as exciting as any lion hunt in Africa!

Mothlighting for National Moth Week with the Missoula Butterfly House

Clinton, MT
July 25, 2015
Robert Niese

July is a glorious time here in Montana. Not only do the insects come out in massive numbers, but it’s also the best time for fishing, star-gazing, botanizing, and huckleberry hunting. Next time you’re in Montana for July, be sure to drop me a line! I’d love to show off all the awesome Nature this region has to offer!

Caenurgina erechtea “Forage Looper” Erebidae

Clinton, MT
July 25, 2015
Robert Niese

Here’s another moth we spotted during our Mothlighting event for National Moth Week with the Missoula Butterfly House. This individual didn’t come to light, however. It came to our sugar lick! A sticky goopy paste of sugar, bananas, molasses, and beer can attract some unique nighttime visitors that you wouldn’t normally see at a light! This Forage Looper was far more interested in a sugary snack, than an insect orgy at a blacklight. And check out that camouflage! So neat!