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The order   Psocodea  , including barklice, booklice, and parasitic lice, is diverse and widely distributed since the Cretaceous. That is particularly the case for the speciose extinct family   Empheriidae   (  Psocodea  ,   Trogiomorpha  ,   Atropetae  ), recently fused with the ‘  Archaeatropidae  ’. Understanding the evolution of barklice is dependent in part on studying this family, as its representatives have been found from the Early Cretaceous to the Eocene, surviving the K/Pg extinction event. The phylogenetic relationships of   Empheriidae   in relation to other families, such as   Lepidopsocidae   or   Psoquillidae  , have been extensively debated. However, distinguishing diagnostic characters for the   Empheriidae   has proven challenging. In this study, we describe the new empheriid    Santonipsocus   mimeticus    gen. et sp. nov.  from Cretaceous Charentese amber (France). It is the third empheriid species found in this locality. The new genus is compared with the other genera in the family, and    Proprionoglaris   guyoti    and    Proprionoglaris   axioperierga    are revised based on the type material and new specimens. We explore the phylogeny of   Empheriidae  , both the relationships with other families and the inner relationships between the genera, through maximum parsimony analysis and Bayesian inference analysis. Our results suggest that   Empheriidae   may represent a paraphyletic evolutionary grade to the rest of   Atropetae  . The phylogenetic relationships between genera align with the biogeography of the family and support previous hypotheses. In addition, we discuss the possible biology of the members of the family, shedding light on the evolutionary history of   Empheriidae  .

arthropod systematics andamp; phylogeny

Unravelling the mishmash: A new phylogeny for the family   Empheriidae   (  Psocodea  ,   Trogiomorpha  ) with a new genus and species from Cretaceous Charentese amber