- Fernández Islands. Shannon,
Raymond Corbett (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 ((9)[2635]):...
- in
Costa Rica. Shannon,
Raymond Corbett (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 ((9)[2635]):...
- Syrphidae. Bolivia. Shannon,
Raymond Corbett (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 ((9)[2635]):...
-
United States. Shannon,
Raymond Corbett (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 ((9)[2635]):...
- Syrphidae. Brazil. Shannon,
Raymond Corbett (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 ((9)[2635]):...
-
United States. Shannon,
Raymond Corbett (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 ((9)[2635]):...
- 81-139 . ISBNÂ 963-04-8838-8 Shannon, R. C. (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 (9):...
- Williston, 1887 Shannon,
Raymond Corbett (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 ((9)[2635]):...
- Syrphidae. Bolivia. Shannon,
Raymond Corbett (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 ((9)[2635]):...
- Syrphidae. Bolivia. Shannon,
Raymond Corbett (1926). "Review of the
American xylotine syrphid-flies".
Proceedings of the
United States National Museum. 69 ((9)[2635]):...