The soursop (Annona muricata L., Annonaceae) is an important fruit crop in several countries of South America, including Brazil, and the presence of the scarab beetles in this orchads can reduce pollination deficits and increase the productivity. For this reason, we report Cyclocephala celata Dechambre, 1980 as a flower visitor and potential pollinator of the soursop. Additionally, this work presents an updated list of Cyclocephala species found on A. muricata, corrects some misidentifications, and provides comments and an identification key for all taxa cited as floral visitors of this crop.
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Rectal or cryptonephridial complexes have evolved repeatedly in arthropods, including in beetles where they occur in ∼190,000 species of Cucujiformia + Bostrichoidea, and Lepidoptera where they occur in ∼160,000 species. Sections of the Malpighian/renal tubules coat the outer surface of the rectum, acting as powerful recycling systems of the gut contents, recovering water and specific solutes. There are hints that a rectal complex evolved independently within another beetle group, Scarabaeoidea.
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PLoS One
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Finnish Museum of Natural History, University of Helsinki, Helsinki, Uusima, Finland.
Although several methods exist for extracting and sequencing historical DNA originating from dry-preserved insect specimens deposited in natural history museums, no consensus exists as to what is the optimal approach. We demonstrate that a customized, low-cost archival DNA extraction protocol (∼€10 per sample), in combination with Ultraconserved Elements (UCEs), is an effective tool for insect phylogenomic studies. We successfully tested our approach by sequencing DNA from scarab dung beetles preserved in both wet and dry collections, including unique primary type and rare historical specimens from internationally important natural history museums in London, Paris and Helsinki.
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