Abstract
The wasp genus Psenulus is the most diverse genus of the family Psenidae in the superfamily Apoidea, with its diversity peaking in the Oriental realm. Six species of the genus are here recorded for the first time from the Hong Kong SAR. Three of these, Psenulus ephippiussp. nov., Psenulus gibbussp. nov. and Psenulus pallenssp. nov. are described as new to science. An identification key, figures for all taxa recorded in Hong Kong and phenology of five of the six species are also provided.
Highlights
Psenulus Kohl, 1897 is a diverse genus of small apoid wasps, including over 160 species (Pulawski 2019)
No information about the presence, distribution or diversity of Psenulus is available for the Hong Kong SAR, located on the northerneastern edge of the Oriental realm
We provide descriptions for the hitherto unknown males of P. continentis and P. maculatus
Summary
Psenulus Kohl, 1897 is a diverse genus of small apoid wasps, including over 160 species (Pulawski 2019). The greatest diversity is found in the Oriental realm where 110 nominotypical. Species and 40 subspecies have been recorded (Pulawski 2019). The species in this realm were extensively reviewed by J. P. van Lith in the 1960s and 1970s (e.g. van Lith 1962, 1969, 1972), whereas Chinese species were revised more recently as part of a PhD thesis by Ma (2012), with the section of that thesis relating to Psenulus not being formally published yet. No information about the presence, distribution or diversity of Psenulus is available for the Hong Kong SAR, located on the northerneastern edge of the Oriental realm
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