August 22, 2026

We used to use a pest control company to spray our Arkansas house several times a year. We quit spraying inside when Melissa began growing succulents to protect her many plants. I would watch the technicians as they put granules in the yard, sprayed around the base of the house, and swept the eaves for wasp (Suborder: Apocrita) nests. I realized the task was straight forward and being retired I could spare the periodic 30 minutes, so I took over the role. We still get canvassers saying, “We happen to be in the neighborhood . . . “, but I tell them I do it myself. When they ask what steps I use, I tell them same as they do, and their response is they have better chemicals. Frankly, I am wary of commercial chemicals, and they leave. I occasionally find a mud dauber (Subfamily: Sceliphrinae) nest that I spray and then knock off the house. While I have not seen a paper nest in a while, I did see a metricus paper wasp on my tomato (Solanum lycopersicum) plants last week.
When I went online, I found metricus paper wasp (Polistes metricus) is a wasp native to North America. In the US it ranges throughout the southern Midwest, the South, and as far northeast as New York, but has recently been spotted in southwest Ontario. A single female has also been reported from Dryden, Maine. The metricus has a dark rusty (ferruginous) color with black markings on its thorax and a mostly black abdomen. The lower portion of the legs (tarsi) are yellow, and the upper leg (tibia) is black. A black spot (separate from the antennae) contains three simple eyes (ocelli). Females have six abdominal segments, while males bear seven. Swelled parts of the abdomen of this species are a key defining element. Like other Polistes (genus), metricus has a high level of socialization (eusociality), including cooperative brood care, overlapping generations of adults within a colony, and a division of labor into reproductive and non-reproductive groups. Like other hymenopterans (Order), sex is determined by if the egg is fertilized (haplodiploid genetics). The preferred prey to feed young is soft-bodied, and especially caterpillars. The International Union for Conservation of Nature has not evaluated this species’ conservation status.
Nests of the metricus paper wasp can be found attached to almost anything, the sides of buildings, trees, and shrubbery. Nests have been observed to be shared between two species of Polistes. The different species of wasp were seen to coexist without conflict. The evolutionary significance of joint nesting is unclear, but hypotheses include it might represent the beginning stages of interspecific sharing to the benefit of each (mutualism) or exploitation. Nest reuse has been observed in the species. It is common for a foundress to use the nest multiple times within a reproductive season, but it is unlikely for the foundresses to return to a nest in a subsequent season. Another distinction is metricus foragers take off from their nests in different directions depending on how long their trip will be. They exit the nest flying horizontally for short flights but exit the nest flying straight up to a high altitude before pursuing their direction for long flights.
Thoughts: One of my memories as a child was my brother and I trying to knock down the metricus paper wasp nests on our porch. The original front porch now faced a dirt street, and a side door faced a paved street, now making it the main entrance. That meant the large wraparound porch was rarely used. This seemed to be the perfect location for the paper nests. We were too afraid to approach the nests directly, so we would toss a broom at them until they fell to the ground. I can never remember being bothered by the wasps unless we were trying to knock down the nests. When I saw the metricus on my tomato it was not bothering me, so I left it alone as. That would have been a better reaction as a child as well. Act for all. Change is coming and it starts with you.








