Heydenius

Heydenius is a collective group genus of fossil mermithid nematodes from the Tertiary period that cannot be placed in extant genera.^[1]

Heydenius Temporal range: Tertiary PreꞒ Ꞓ O S D C P T J K Pg N
Heydenius formicinus adjacent to its worker ant host in Baltic amber
Scientific classification
Kingdom:	Animalia
Phylum:	Nematoda
Class:	Enoplea
Order:	Mermithida
Family:	Mermithidae
Genus:	†Heydenius Taylor, 1935
Species
See text

Species

Scientific name	Age	Type locality	Country	Host	Notes
Heydenius antiquus (von Heyden, 1860) Taylor, 1935	Oligocene/Miocene	Rhine lignite	Germany	Hesthesis immortua von Heyden, 1862 (Coleoptera, Cerambycidae)	Originally named Mermis antiqua von Heyden, 1860.
Heydenius arachnius Poinar, 2012[2]	Miocene	Dominican amber	Dominican Republic	Araneae
Heydenius araneus Poinar, 2000[3]	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Araneae, Thomisidae
Heydenius brownii Poinar, 2001[4]	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Hemiptera, Achilidae
Heydenius cecidomyae Poinar, 2011[1]	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Diptera, Cecidomyiidae
Heydenius dipterophilus Poinar, 2011[1]	Miocene	Dominican amber	Dominican Republic	Diptera, Milichiidae
Heydenius dominicus Poinar, 1984[5]	Miocene	Dominican amber	Dominican Republic	Culex (Diptera, Culicidae)
Heydenius formicinus Poinar, 2002[6]	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Prenolepis henschei Mayr, 1868 (Hymenoptera, Formicidae)
Heydenius lamprophilus Poinar, 2011[1]	Miocene	Dominican amber	Dominican Republic	Coleoptera, Lampyridae
Heydenius matutinus (Menge, 1866) Taylor, 1935	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Diptera, Chironomidae	Originally named Mermis matutina Menge, 1866.
Heydenius myrmecophila Poinar, Lachaud, Castillo & Infante, 2006[7]	Miocene	Dominican amber	Dominican Republic	Linepithema (Hymenoptera: Formicidae)
Heydenius neotropicus Poinar, 2011[1]	Miocene	Dominican amber	Dominican Republic	Diptera, Chironomidae
Heydenius phasmatophilus Poinar, 2012[2]	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Balticophasma (Phasmatodea: Phasmatidae)
Heydenius podenasae Poinar, 2012[2]	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Lepidoptera
Heydenius psychodae Poinar, 2011[1]	Miocene	Dominican amber	Dominican Republic	Diptera, Psychodidae
Heydenius quadristriatus (Menge, 1872) Taylor, 1935	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Unknown	Originally named Mermis quadristriata Menge, 1872.
Heydenius saprophilus Poinar, 2011[1]	Miocene	Dominican amber	Dominican Republic	Diptera, Anisopodidae
Heydenius scatophilus Poinar, 2011[1]	Miocene	Dominican amber	Dominican Republic	Diptera, Scatopsidae
Heydenius sciarophilus Poinar, 2011[1]	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Diptera, Sciaridae
Heydenius simulphilus Poinar & Currie, 2019[8]	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Diptera, Simuliidae
Heydenius tabanae Poinar, 2011[1]	Late Pliocene (Piacenzian)	Willershausen clay pit	Germany	Tabanus sudeticus Zeller, 1842 (Diptera, Tabanidae)
Heydenius trichorosus Poinar, 2012[2]	Eocene	Baltic amber	Russia ( Kaliningrad Oblast)	Triaenodes balticus Wichard & Barnard, 2005 (Trichoptera, Leptoceridae)

See also

• Cretacimermis