Flat, red, oblong growth that has a central yellow nipple. Growing on the underside of a green leaf.
Phylloteras sigma (Cynipidae). Currently my favorite local gall because it's so darn cute. You can find them on the undersides of white oak leaves in the eastern United States, and apparently also in Chicago. Likely elsewhere but they are tiny and easy to miss. #galls #wasps #cynipidae #insects
Black and white hornet on an oak leaf next to three spherical galls growing out of a stem.
Oak rough bullet gall (Disholcaspis quercusmamma) with a bodyguard that was collecting nectar from the surface of the gall. The wasps and ants that come to these nectar rewards likely deter parasitic wasps and inquiline hangers-on from ovipositing into the galls. 🌿 #galls #cynipidae #wasps #oaks
Oak marble gall (caused by Andricus kollari)
Spangle gall (caused by Neuroterus quercusbaccarum)
Commonly found together on oak leaves.
#macro #macrophotography #nature #galls #gallwasps #wasps #hymenoptera #cynipidae #oak #trees #autumn #wildlife #wildlifephotography #entomology
GALLS!
#galls #entomology #Cynipidae
#gallformers
Scattered plot of data with exit holes chewed in oak apple galls on the Y axis and the volume of the galls on the X axis. Red vertical line shows mean volume of galls and red horizontal line shows mean number of exit holes per gall.
Here's what we're finding, simply graphing the volume of the oak apple gall (in mL) against the number of chewed exit holes.
In one class period we recorded data on 182 oak apple galls.🧵
#Gallwasps #Wasps
#Hymenoptera #Entomology #Cynipidae #Insects #Galls
Two pale-green, purple-spotted, fig-shaped galls attached to a small tree branch near some developing leaves.
Transversal cut through a pale green gall in which dozens of white, radiating plant fibers connect a central mass with the inner surface.
Larger empty apple oak gall (Amphibolips quercusinanis). The wasp larva resides in a protective chamber at the center, grazing on soft plant tissue fed by the radiating fibers. #wasp #insect #hymenoptera #entomology #gall #galls #oak #cynipidae
New paper in Specimen sharing data in @gbif.org:
New country record and commentary for #Aulacidea hei Wang et al. (#Hymenoptera: #Cynipidae: #Aulacideini)
#CiteTheDOI: ✅
#OpenAccess: ⭐️
https://doi.org/10.56222/28166531.2024.36
Polystepha pilulae galls on blackjack oak
Polystepha pilulae galls on blackjack oak
Some bright, late season Polystepha pilulae #galls on blackjack #oak in east Texas. #cynipidae
Compact, black-and-amber wasp extending tip of abdomen into a fluffy, orange-and-yellow growth on an oak leaf.
Ceroptres sp. ovipositing into a furry oak leaf gall (Callirhytis furva). Possibly an inquiline but there's chatter in the literature that some in the genus might be parasitoids. Swarthmore, Pennsylvania. 🌿 #gall #wasp #cynipidae #insects
The highly #schlerophyllous Coast Live Oak (#Quercus #agrifolia) supported the most diverse #galling community at Jasper Ridge, with ten species, mostly belonging to the #Cynipidae family. #CoastLiveOak Examples of #galls on Q. #agrifolia pics by @alicegcummings
