Analysis of information sources in references of the Wikipedia article "Chalcosyrphus" in English language version.
{{cite web}}
: Unknown parameter |name=
ignored (help){{cite web}}
: Unknown parameter |name=
ignored (help){{cite web}}
: Unknown parameter |name=
ignored (help){{cite web}}
: Unknown parameter |name=
ignored (help){{cite web}}
: Unknown parameter |name=
ignored (help)