HIKES AND NATURE WALKS IN THE SAN GABRIELS

Walks on the Wild Side, Fall-Winter, 2008-9

November 5, 2008
West Fork of the San Gabriel River
Narrowleaf Milkweed and Associates

Section 3: Insects that feed directly on the milkweed plant


Spiny Tachina Fly, Paradejeania rutilioides on California buckwheat. Photo by Karen.

BugBob, Bob Allen, has identified this one for us. “It's a Tachinid fly, almost certainly Paradejeania rutilioides.”

The tachinid fly is an insect parasite. The larva feed internally on the caterpillar or body of the host insect which is, in most cases, an agricultural pest like the cabbage looper.

More information:

Natural Enemies Gallery Tachinid flies

Tachinid Fly (Lespesia archippivora) Parasitism of Monarch Butterfly Larvae (Danaus plexippus)2006-2007


Convergent lady beetle aka "Ladybug" with dead milkweed flowers. Photo by Graham.

It's the two dashes on the thorax identify this beetle as the convergent lady bug. The number of spots is variable. It lays eggs on the milkweed plant. When the eggs hatch the larva eat the aphids.

More information:

Convergent lady beetle

 

Narrowleaf Milkweed and Associates

Section 1. The Plant Asclepias fascicularis, narrowleaf milkweed

Section 2. Insects that feed directly on the milkweed plant

Section 3. Insects that feed on the insects that feed on the milkweed

Section 4. Other insects we saw

“I do not seek. I find.” — Pablo Picasso

original pages created November 7, 2008
text on this page is Copyright © 2008-2021 Jane Strong.
images on this page attributed to Karen are Copyright © 2008-2021 Karen Isa.
images on this page attributed to Graham are Copyright © 2008-2021 Graham Bothwell.

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