Related Experiment Video
Updated: Mar 15, 2026
04:26
Author Spotlight: Exploring Bradysia coprophila's Unique Biology – A Guide to Laboratory Maintenance
Published on: April 19, 2024
1.9K
Spongillaflies (Neuroptera, Sisyridae) in Baltic amber
Wilfried Wichard1, Sonja Wedmann2, Thomas Weiterschan3
1University of Koeln, Institute of Biology, Gronewaldstrasse 2, D-50931 Koeln, Germany;
Zootaxa
|September 13, 2016
Summary
Two new spongillafly species, Paleosisyra minor and Paleosisyra electrobaltica, are described from Eocene Baltic amber. This study re-describes Paleosisyra electrobaltica with new male specimens, enriching the scarce fossil record of Sisyridae.
Area of Science:
- Paleontology
- Entomology
- Fossil Insects
Background:
- The family Sisyridae (spongillaflies) has a scarce fossil record.
- Spongillaflies are aquatic insects known for their association with freshwater sponges.
Purpose of the Study:
- To describe and illustrate two spongillafly species from Eocene Baltic amber.
- To re-describe Paleosisyra electrobaltica based on newly discovered male specimens, including their genitalia.
Main Methods:
- Morphological examination of fossilized specimens preserved in Eocene Baltic amber.
- Detailed illustration and description of external morphology, with a focus on male genitalia.
Main Results:
- Description of Paleosisyra minor n. sp.
- Re-description of Paleosisyra electrobaltica Wichard et al., 2009, incorporating data from male specimens.
- Detailed illustrations of both species, highlighting diagnostic features.
Conclusions:
- The study expands the known diversity of Eocene spongillaflies.
- The re-description of Paleosisyra electrobaltica provides crucial insights into the sexual dimorphism and evolutionary history of fossil Sisyridae.
