FloraFinder.org
Home   About Us   Want to Help?   FAQ  
Searching   Image Use Biblio

Callirhytis seminator

 

Wool sower gall

ParentsUnknownGenus is not in the current taxonomy
GenusCallirhytis
Speciesseminator

About plant names...

This species is a bug, not a plant. Wool sower galls—all galls—are caused by insects that reprogram a plant’s growth mechanisms to grow a house around themselves. That just blows my socks off!

These partic­ular galls are caused by Callirhytis seminator gall wasps, tiny little brown fellers ⅛" (4.8 mm) long. The grubs (immature insects) secrete plant growth regulators on oak branches in their saliva, forcing the plant to build a home for them. Each gall has an outer wall, a spongy fiber layer, and hard, seed-like structures that house developing grubs. The commandeered plant machinery even secretes nutrients for the developing wasps! The galls appear in the spring, and do not harm the host oak.

Online References:

Callirhytis seminator on content.ces.ncsu.edu

Callirhytis seminator on www.marylandbiodiversity.com

Callirhytis seminator on bugguide.net (Photos)

Callirhytis seminator on content.ces.ncsu.edu

Callirhytis seminator (wool sower gall)

On white oak. · 6/1/2013 · Beaver Brook Assn Conservation Lands, Rte. 130, Hollis, NH
≈ 1¼ × 1" (3.1 × 2.7 cm)

Callirhytis seminator description by Thomas H. Kent, last updated 22 Sep 2020.

© FloraFinder.org. All rights reserved.


 

Callirhytis seminator (wool sower gall)

On white oak. · 6/1/2013 · Beaver Brook Assn Conservation Lands, Rte. 130, Hollis, NH
≈ 7 × 4½" (18 × 12 cm)

Callirhytis seminator (wool sower gall)

On white oak. · 6/1/2013 · Beaver Brook Assn Conservation Lands, Rte. 130, Hollis, NH
≈ 4½ × 7" (12 × 18 cm)