Abstract
Associated Procladius Skuse (Holotanypus Roback) material from the Sublette collection was found to have specimens with undescribed immature stages. Pupal exuviae of two species are described for the first time: P. barbatulus Sublette and P. clavus Roback. Adult and larval features are included for P. barbatulus. In addition, specimens of Nearctic P. denticulatus Sublette are compared to Palearctic P. signatus (Zetterstedt) to determine if exuviae can separate these species or suggest that P. signatus is a senior synonym. Finally, associated pupal and larval traits of P. prolongatus Roback are compared to the original description, corroborating the theory that features are unique enough to warrant subgeneric status.
Highlights
Within Procladius Skuse, Holotanypus Roback is a diverse subgenus in the Nearctic region with 18 described species (Ashe and O’Connor 2009), of which six have not previously been described in the pupal stage
While comparing recently collected material to the Sublette collection at the University of Minnesota, a number of associated specimens were noted within Procladius, including two species (P. barbatulus Sublette and P. clavus Roback) with undescribed pupal exuviae
We compare an associated specimen of the Nearctic P. denticulatus Sublette to the morphologically similar Palearctic P. signatus (Zetterstedt) to determine if the pupal stage can be used to better distinguish these species
Summary
Within Procladius Skuse, Holotanypus Roback is a diverse subgenus in the Nearctic region with 18 described species (Ashe and O’Connor 2009), of which six have not previously been described in the pupal stage. While comparing recently collected material to the Sublette collection at the University of Minnesota, a number of associated specimens were noted within Procladius, including two species (P. barbatulus Sublette and P. clavus Roback) with undescribed pupal exuviae. We compare an associated specimen of the Nearctic P. denticulatus Sublette to the morphologically similar Palearctic P. signatus (Zetterstedt) to determine if the pupal stage can be used to better distinguish these species. We used eight associated rearings from Alaska to reevaluate if P. prolongatus Roback is unique enough to have a separate subgenus designation (Roback 1980, 1982)
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