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Parasitoid wasps are a big bummer (and have one too)

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A long-tailed giant ichneumonid wasp deposits eggs in Dayton on Aug. 30, 2025.
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Kayla P. via iNaturalist
A long-tailed giant ichneumonid wasp deposits eggs in Dayton on Aug. 30, 2025.

Co-hosts Heidi Holtan and Charlie Mitchell chat about Darwin, monarch butterflies, and the decline (and hope) of birds.

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Charles Darwin was a well-documented grump*.

One group of insects that really bummed him out were ichneumonid wasps, because their life cycle is dependent on a pretty cruel process. “I cannot persuade myself that a beneficent and omnipotent God would have designedly created the Ichneumonidæ [parasitic wasps] with the express intention of their feeding within the living bodies of Caterpillars,” Darwin writes in Life and Letters of Charles Darwin.

In this week's Season Watch Podcast, co-hosts Heidi Holtan (director of content and public affairs) and Charlie Mitchell (phenology coordinator) talk about parasitoid wasps, the abundance of monarch butterflies, and the exciting habits of red-backed salamanders.

We hear from Prairie Creek Community School, John Latimer (staff phenologist), David Virnala, and Christopher Smith (wildlife biologist).

Attributions

  1. Black-legged meadow katydid recording by Marti Starr via iNaturalist.
  2. The recording from David Virnala was left on KAXE's voicemail.
  3. Prairie Creek Community School's phenology talkback, John Latimer's phenology report, and Christopher Smith's salamander interview all originally aired on KAXE.
  4. This episode was produced by Charlie Mitchell and Heidi Holtan.

Love the podcast? What creatures shake your faith in the universe? Let us know! Send us a voice memo through Speak Pipe!

Email us at seasonwatch@kaxe.org.

*Other dour and/or relatable Darwin quotes include:

  • “But I am very poorly today & very stupid & I hate everybody & everything. One lives only to make blunders.” -The Correspondence of Charles Darwin, Volume 9
  • "I am dying by inches, from not having any body to talk to about insects..." -Letters. A Selection, 1825–1859
  • "...one day, on tearing off some old bark, I saw two rare beetles, and seized one in each hand; then I saw a third and new kind, which I could not bear to lose, so that I popped the one which I held in my right hand into my mouth. Alas! it ejected some intensely acrid fluid, which burnt my tongue so that I was forced to spit the beetle out, which was lost, as was the third one." -The Autobiography of Charles Darwin
  • "I do so hope that you have not wasted any time for my stupid blunder.— I hate myself I hate clover & I hate Bees." -To John Lubbock   [3 September 1862], Darwin Correspondence Project
  • "I am at work on the second vol. of the Cirripedia, of which creatures I am wonderfully tired: I hate a Barnacle as no man ever did before, not even a Sailor in a slow-sailing ship." -To W. D. Fox   24 [October 1852], Darwin Correspondence Project
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Charlie Mitchell creates the Season Watch Newsletter and Season Watch Podcast, produces the Phenology Talkbacks show, coordinates the Phenology in the Classroom program, and writes nature-related stories for KAXE's website. With a background in ecology and evolutionary biology, Charlie enjoys learning a little bit about everything, whether it's plants, mushrooms, or the star-nosed mole. (Fun fact: Moles store fat in their tails, so they don't outgrow their tunnels every time conditions are good.)
For more than two decades, Heidi Holtan has helped shape the sound of KAXE. Since joining the station in 2002 as a volunteer music programmer, she has worn many hats including the weekly book program, Realgoodwords, hosting the Morning Show, creation and host of the weekly call-in program Between You and Me, serving as Outreach Producer. Program Director, News Director and currently Director of Content and Public Affairs.
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