Reference:

Tsuneki, K., 1952. Ethological studies on the Japanese species of Pemphredon (Hymenoptera, Sphecidae), with notes on their parasites, Ellampus spp.(Hym., Chrysididae)(With 5 Text-figures). 北海道大學理學部紀要, 11.1: 57-75.

URL:

https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/27112/1/11%281%29_P57-75.pdf

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