Wasp nest slime mold (Metatrichia vesparia) in area of Posiolok near Vyritsa, south from Saint Petersburg, Russia, May 1, 2017
Unnamed Road, Vyritsa, Leningradskaya oblast', Russia, 188381Synonyms: Arcyria rubiformis, Craterium porphyrium, Hemiarcyria ellisii, Hemiarcyria rubiformis, Hemiarcyria vesparia, Hemitrichia rubiformis, Hemitrichia vesparia, Lycoperdon vesparium, Mucor pyriformis, Stemonitis cinnabarina, Stemonitis vesparia, Trichia ayresii, Trichia chalybea, Trichia fragiformis, Trichia neesiana, Trichia pyriformis, Trichia rubiformis.
Russian name: Metatrikhiya sotovidnaya.
Metatrichia vesparia is a species of slime mold that belongs to the class Myxomycetes. It is characterized by its yellowish to brownish sporangia, typically 0.5-1.5 mm in diameter, with a stalked or sessile habit. In St. Petersburg and Leningrad Oblast, M. vesparia has been found on decaying wood, especially coniferous trees, and other plant debris. Records from north-western Russia indicate that the species prefers moist, shaded environments, such as forest floors and woodland edges. The slime mold typically fruits in summer and early autumn, with sporangia often aggregated in small groups.
Wasp nest slime mold (Metatrichia vesparia) in area of Posiolok near Vyritsa, south from Saint Petersburg, Russia, May 1, 2017Unnamed Road, Vyritsa, Leningradskaya oblast', Russia, 188381
Wasp nest sporangia of slime mold Metatrichia vesparia in area of Posiolok near Vyritsa, south from Saint Petersburg, Russia, May 1, 2017Unnamed Road, Vyritsa, Leningradskaya oblast', Russia, 188381Observations of Metatrichia vesparia in Leningrad Oblast and north-western Russia reveal the species' presence in specific areas. On May 1, 2017, the wasp nest slime mold was found in the area of Posiolok near Vyritsa, south of Saint Petersburg, Russia. The sporangia of Metatrichia vesparia were also observed in the same location, indicating the species' ability to thrive in this region. The presence of the slime mold on wasp nests suggests a potential symbiotic relationship between the two organisms. Further observations are needed to fully understand the distribution and behavior of Metatrichia vesparia in this region. The discovery of this species in Leningrad Oblast and north-western Russia contributes to our knowledge of its range and habitat preferences, highlighting the importance of continued exploration and documentation of slime mold species in these areas. Specific habitats and conditions support its growth.
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