This Week in PLOS

In PLOS One, an international team led by investigators in Germany reports on findings from a study using DNA barcoding to test for cryptic speciation in Wolbachia-infected butterflies from the Phengaris genus. Butterflies from that genus are known for a parasitic stage to their life cycles, study authors noted, which may make them prone to infection by Wolbachia and other intracellular microbial parasites.

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A phylogenetic analysis indicates two venomous Australian spiders are more closely related than thought, the International Business Times reports.

Technology Review reports that 2017 was the year of consumer genetic testing and that it could spur new analysis companies.

In Science this week: CRISPR-based approach for recording cellular events, and more.

A new company says it will analyze customers' genes to find them a suitable date, though Smithsonian magazine says the science behind it might be shaky.