Stock Photo - Borige fly, Fig. 20: Boron fly, Fig. 21: The same enlarged, Fig. 22: The horn-like head shell of a wasp in its natural size, Fig. 23: The same enlarged, Fig. 24: One of the three eyes on the back of the head, a bumblebee, Fig. 25: Such an eye after the bumblebee is taken off the head of the head, signed: WFLB de G. d., R. pinx, J.C. Keller exc, Tab. II, p. 32, Gleichen-Russwurm, Wilhelm Friedrich (pinx.); Keller, Johann Christoph (exc.), 1790, Wilhelm Friedrich von Gleichen-Russwurm, Johann Christoph Keller: [..] Geschichte der gemeinen Stubenfliege: nebst vier mit Farben erleuchteten Kupfertafeln. Nürnberg: in der Raspischen Buchhandlung, 1790

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