. Dipterologische studien. Dolichopodidae. Vis;. 22. Flügel. Tachytrechus ohtechts. 18 : Fig. 23/24. Kopl von vorne und von der Seite. Tachytrechus obtectus Beok. r/. 16 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Becker, Theodor. Wien, Zool. -botan. gesellschaft

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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1921