wasp nest slime mold

(Metatrichia vesparium)

Conservation Status
wasp nest slime mold
Photo by Luciearl
  IUCN Red List

not listed

     
  NatureServe

not listed

     
  Minnesota

not listed

     
           
           
           
           
 
Description
 
 

Wasp nest slime mold is a common and widespread plasmodial slime mold. It is found in Europe, Asia, Africa, Australia, and North and South America. In the United States it is common east of the Great Plains, including Minnesota, less common in the west. It grows in open forests on dead and rotting wood, especially hardwood.

The fruiting body (sporocarp) may be attached directly to the substrate (sessile) or rise in a densely crowded group of up to twelve on a common stalk (stipitate).

The spore-producing structures (sporothecae) are less than (2.5 mm) in height, and about 1 32 (0.4 to 0.7 mm) in diameter. They are almost cylinder-shaped or cone-shaped to almost egg-shaped, and have a distinct convex lid (operculum) on top. The outer skin consists of two or three layers: an outer, tough, cartilaginous, dark red or reddish-purple to nearly black layer; and an inner membranous layer. The operculum is shiny, iridescent, and dark red or reddish-purple to nearly black. When mature, it swings open like a jack-in-the-box, and the interior expands outward. The expanded interior consists of a few fibers (capillitia) interspersed with the spores. The capillitia are very long, coiled, and red. The spore mass is bright red or rust-red. When it dries out, the spores are disbursed by wind. Eventually, the expanded portion disintegrates. What is left looks like the nest of a paper wasp, giving this slime mild its common name.

 
     
 

Similar Species

 
     
     
 
Habitat and Hosts
 
 

Open forests. Dead wood.

 
     
 
Biology
 
 

Season

 
 

 

 
     
     
 
Distribution
 
 

Distribution Map

 

Sources

4, 24, 26, 29, 30, 77.

 
  11/12/2018      
         
 

Occurrence

 
 

Widespread and common

 
         
 
Taxonomy
 
  Kingdom Protozoa (protozoans)  
  Phylum Mycetozoa (slime molds)  
  Class Myxomycetes (true slime molds)  
  Order Trichiales  
  Family Trichiaceae  
 

Genus

Metatrichia  
       
 

Synonyms

 
 

Metatrichia vesparia

 
       
 

Common Names

 
 

wasp nest slime mold

 
       

 

 

 

 

 

 

 
 
Visitor Photos
 
           
 

Share your photo of this slime mold.

 
  This button not working for you?
Simply email us at info@MinnesotaSeasons.com.
Attach one or more photos and, if you like, a caption.
 
 

Luciearl

 
    wasp nest slime mold      
           
 
MinnesotaSeasons.com Photos
 
 

 

 
           
           

 

Camera

     
 
Slideshows
 
 
     
     
     

 

slideshow

       
 
Visitor Videos
 
       
 

Share your video of this slime mold.

 
  This button not working for you?
Simply email us at info@MinnesotaSeasons.com.
Attach a video, a YouTube link, or a cloud storage link.
 
 

 

 
     
     
       
       
       
 
Other Videos
 
  Wasp Nest Slime Mold, Metatrichia vesparium
microcosmic
 
   
 
About

Published on Aug 16, 2017

Hey everyone! In today's video I talk a little bit about one of my favorite slime molds, the wasp nest slime mold. Like most myxomycetes, there has been a disappointing lack of research done on this organism, but I tried to provide what I could find both online and in the literature. All photos and illustrations are mine.

Blog: Microcosmia.com
Redbubble: https://www.redbubble.com/people/microcosmicshop
Music: Bensound

 
       

 

Camcorder

 
 
Visitor Sightings
 
           
 

Report a sighting of this slime mold.

 
  This button not working for you?
Simply email us at info@MinnesotaSeasons.com.
Be sure to include a location.
 
  Luciearl
9/2018

Location: Cass County

wasp nest slime mold  
           
           
 
MinnesotaSeasons.com Sightings
 
 

 

 

 

 

Binoculars


Created: 11/12/2018

Last Updated:

About Us | Privacy Policy | Contact Us | © 2021 MinnesotaSeasons.com. All rights reserved.