| Summary: | The family Anaxyelidae, known primarily from the fossil
record, consists of two subfamilies—Syntexinae, and
Anaxyelinae—spanning from the Middle Jurassic to the
present. Among the latter, Syntexinae are mostly represented
by fossil taxa from the Jurassic and Cretaceous periods,
with Syntexis being the only extant genus, and no known
Cenozoic occurrences. In this study, we describe a new
genus and species of Syntexinae, Deresyntexis bethouxi gen.
et sp. nov. from mid-Cretaceous Kachin amber. Although
this discovery does not resolve existing diversity gaps, the
well-preserved specimen provides valuable insights into the
evolutionary traits and adaptations of Syntexinae during the
Cretaceous. The unique morphology of the specimen, distinct
from previously described genera, contributes to a deeper
understanding of the evolutionary history and morphological
diversity of the family
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