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Full plastomes have recently proven to be a valuable data source for resolving recalcitrant phylogenetic relationships in the flowering plant family Bromeliaceae. The study of complete plastomes has additionally led to the discovery of new structural rearrangements and advanced our understanding of bromeliad plastome diversity and evolution. Here, we focus on the study of full plastomes of the bromeliad subfamily Hechtioideae to assess phylogenetic relationships, marker informativeness, and plastome structure and evolution. Using whole‐genome sequencing data, we de novo assembled and annotated new plastid genomes of 19 Hechtioideae species plus one representative each from the Pitcairnioideae and Puyoideae subfamilies and compared them with four additional available plastomes from other bromeliad subfamilies. Our phylogenetic analysis using complete plastome sequences not only recovered the three currently recognized genera of Hechtioideae as monophyletic, strongly supporting Mesoamerantha as sister of Bakerantha and Hechtia, but also improved statistical support at different phylogenetic depths within the subfamily. We identified a set of highly informative loci, some of them explored for the first time in Hechtioideae. Structural rearrangements, including expansions and contractions of the inverted repeats, large inversions, and gene loss and potential pseudogenization were detected mainly within the genus Hechtia. Evolutionary trait rate shifts were associated with the size and guanine–cytosine content of the small single copy and inverted repeats. [ABSTRACT FROM AUTHOR]

We present the complete mitochondrial genome of Tzotzilthelphusa villarosalensis Villalobos & Álvarez, 2013 , a freshwater crab from Mexico. This is the first mitochondrial genome reported for the superfamily Pseudothelphusoidea. We performed a de novo assembly from genome skimming reads. The mitochondrial genome of T. villarosalensis has a length of 17,203 bp and its gene topology is similar to other freshwater and marine families, e.g. the position of the cytochrome oxidase complex subunits and ATA synthetase, even the order of nad3 , nad5 , nad4 , nad4L , nad6 , and cytb. By contrast, the order and organization of genes like the 16S, 12S, and nad1 are different depending on the phylogenetic group with which they are compared. The phylogenetic analyses placed T. villarosalensis as a sister group of all freshwater crabs reported until now and as part of the subsection Heterotremata. This complete mitochondrial genome could be a reference for further genomic studies of the family Pseudothelphusidae and other primary freshwater crabs. [ABSTRACT FROM AUTHOR]