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The aphid Chaetosiphon fragaefolii Cockerell, 1901 is an agricultural pest and known vector of strawberry viruses. To better understand its biology and systematics, we performed a genomic analysis on C. fragaefolii collected from Quinalt strawberry plants from Pacific Grove, Monterey county, California, USA using Oxford Nanopore and Illumina sequencing. The resulting data were used to assemble the aphids complete mitogenome. The mitogenome of C. fragaefolii is 16,108 bp in length and contains 2 rRNA, 13 protein-coding, and 22 tRNA genes (GenBank accession number LC590896). The mitogenome is similar in content and organization to other Aphididae. Phylogenetic analysis of the C. fragaefolii mitogenome resolved it in a fully supported clade in the tribe Macrosiphini. Analysis of the cox1 barcode sequence of C. fragaefolii from California found exact and nearly identical sequences to C. fragaefolii and Chaetosiphon thomasi Hille Ris Lambers, 1953, suggesting the two species are conspecific.

Deep eutectic solvents (DESs) have potential as designer media whose physical, chemical, electrochemical, and spectroscopic properties are easily and broadly tuned. Due to the ubiquity of water and the hygroscopic nature of many DES components, it is important to understand how water affects DESs both on the nanoscale and in the bulk. Here, we present a study of the physical properties of DES/water mixtures. We found that water appears to form a ternary DES when mixed with 2:1 urea/ChCl.