A remarkable fossil berothoid larva (Neuroptera) from the late Eocene Rovno amber (Ukraine)

The larva of Berothidae or Rhachiberothidae (Neuroptera) is described from the late Eocene Rovno amber; it is the first record of either family from this amber. The larva is in particular characteristic with a four-segmented antenna, at least five stemmata, and lateral sutures on the head capsule connecting the coronal suture and lateral margins of the head. Based on these characters, the larva probably may belong to one of basal taxa of Berothidae, possibly to a suprageneric taxon which includes an undescribed small species from Baltic amber which is closely related to the mid-Cretaceous Haploberotha, or to Rhachiberothidae. This larva was most likely free living, possibly occurring under/on tree bark. In addition, the genus Protomenocria Emeljanov and Shcherbakov 2009 (Hemiptera: Achilidae) is recorded from Rovno amber for the first time.