The #warmthloving #paperwasp #Polistes #dominula (Polistinae) was originally native to central/ southern Europe and Asia, but is increasingly spreading towards Scandinavia due to #globalwarming. In e.g. Australia and #NorthAmerica it occurs as #neozoan. 50 or more nest cells are created by one or several young #queens with the strongest subdueing its competitors. The wasp can be #parasitized by #Xenos #vesparum (#Strepsiptera).
© #StefanFWirth #Berlin 2025

The fly #Ectophasia #crassipennis (#Phasiinae, #Tachinidae,) has a Palearctic distribution and prefers #warmth. In Germany, warmth-favored areas are populated. Contrary to older literature referring to southern/southwest #Germany, the species also occurs in #Berlin. The #brood lives endoparasitically in #truebugs, often on #Pentatomidae. #Globalwarming favors the expansion of the original distribution of #warmthloving#species. #Biodiversity
© #StefanFWirth Berlin 2024
(#photos my © 2020-24)