Genus Gelis
About
Observations
Taxonomy
A large genus of ant-like wasps (300 total, 92 in North America).
The first Idaho iNat observation for this genus was found on the spruce stump in the yard on 25 October 2019.
On spruce stump, 25 Oct 2019
Emerged from spider egg sac, 4 Apr 2022
On apple below tree, 6 Dec 2025
Here are some videos of a new species of Gelis ovipositing on beetle eggs.
VIDEO
VIDEO
Links
iNaturalist
BugGuide
iNaturalist
Occurrence of Parasitoid Wasps in the Egg Sacs of the Wolf Spiders in Southeastern Idaho
Ant-like Traits in Wingless Parasitoids Repel Attack from Wolf Spiders
Bug Tracks: Spider Parasitoids
Gelis sp.
On March 9 I collected some spider egg sacs that I found under a rock in our yard. I put them in a bag to see what would come out. \nToday about a dozen Gelis wasps emerged, mostly females. This is a female on an egg sac.
Gelis sp.
Female Gelis wasp that emerged today from spider eggs sacs that I collected from my yard on March 9. 6 mm
Gelis sp.
Emerged today from spider egg sac that I found on March 9. This male mated with one of the female Gelis wasps in the plastic bag that contained the sample.
Gelis sp.
On March 9, 2022 I collected some spider egg sacs that I found under a rock in our yard. I put them in a bag to see what would come out. About a dozen Gelis wasps emerged, mostly females. This is one of the males. Length ~ 4 mm.
Gelis sp.
4 Apr 2022
Female Gelis wasp that emerged today from spider eggs sacs that I collected from my yard on March 9.
Gelis sp.
4 Apr 2022
On March 9, 2022 I collected some spider egg sacs that I found under a rock in our yard. I put them in a bag to see what would come out.
About a dozen Gelis wasps emerged, mostly females. This is one of the males.
~ 4mm ...
stdClass Object
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[id] => 46
[k_id] => 1
[p_id] => 2
[sp_id] => 1
[c_id] => 7
[sc_id] => 1
[o_id] => 8
[so_id] => 1
[io_id] => 0
[supf_id] => 3
[f_id] => 9
[sf_id] => 19
[t_id] => 10
[st_id] => 5
[g_id] => 36
[sg_id] => 0
[s_id] => 0
[ss_id] => 0
[o_desc] =>
[o_time] => 1572006960
[inat_time] => 1572006960
[cat_id] => 58
[o_image] =>
[o_featured] => 0
[inat_url] => https://www.inaturalist.org/observations/34894268
[inat_image_url] => https://inaturalist-open-data.s3.amazonaws.com/photos/54977431/medium.jpeg
[o_short_desc] =>
[lowest_level] => g_id
[llid] => 3
[cultivated] => 0
[introduced] => 2
[good_image] => 1
[pollinating] => 0
[pollinating_level] =>
[eco_interaction] => 0
[gender] => female
[research_grade] => 0
[beeatlas] =>
[admin_notes] => Updated from iNat
[gbif_url] =>
[collection] =>
)
Genus: Gelis
Taxonomy Subclass:
Pterygota (Winged and Once-winged Insects)
Suborder:
Apocrita (Narrow-waisted Wasps, Ants, and Bees)
No lower level information