A unique collection of permanent neurohistological preparations. The collection contains preparations of the nervous system of the body wall, cerebral ganglia and trunk brain, the oral apparatus, sensory structures and intestine of several insect species: 3rd and 4th instar nymphs of the brown hawker (Aeshna grandis), a larva of the may beattle, imago of the migratory locust (Locusta migratoria migratorioides) and the American cockroach (Periplaneta americana).
The collection contains whole-mount preparations of the nervous system stained using the method of supravital staining with methylene blue developed by A.S. Dogiel, and serial sections of optical lobes impregnated with silver nitrate by the Golgi method. The preparations of each insect species (dragonflies – about 350 preparations, locusts and cockroaches – several dozen) are stored in separate, numbered slide trays or in special boxes at the Laboratory of Evolutionary Morphology of the Zoological Institute RAS (ZIN RAS).
The collection was donated by close relatives of S.I. Plotnikova to the Laboratory of Evolutionary Morphology of ZIN RAS, where it is currently stored.