Pasco discovered several species of moth previously unknown to science and collected numerous specimens.

[1] An amateur entomologist, Pasco created a significant collection of New Zealand lepidoptera in the early 1900s.

[2] Pasco was one of the most productive collectors of type specimens of beetle species described by Thomas Broun.

[4] However this species name was subsequently synonymised by Everard Baldwin Britton and this beetle is now known as Megadromus sandageri.

[6] At the commencement of World War One, Pasco volunteered to serve in the New Zealand Armed Forces but was turned down.