Lygaeus pandurus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Heteroptera
Infraorder: Pentatomomorpha
Superfamily: Lygaeoidea
Family: Lygaeidae
(Schilling, 1829)


The Lygaeidae are a family in the Hemiptera (true bugs), with some 60 genera in six subfamilies. The family includes the insects commonly known as milkweed bugs, and also some of those known as seed bugs. The family used to be vastly larger, as numerous former subfamilies have been removed and given independent family status, including Artheneidae, Blissidae, Cryptorhamphidae, Cymidae, Geocoridae, Heterogastridae, Ninidae, Oxycarenidae, Pachygronthidae, and Rhyparochromidae, which together constituted well over half of the former family. Many of the species feed on seeds, although some feed on sap (mucivory), and a few, such as the wekiu bug, feed on insects.

Small Milkweed Bug (Lygaeus kalmii), nymph (bottom) and mature (top)

The bizarre and mysterious beetle-like Psamminae were formerly often placed in the Piesmatidae, but this is almost certainly quite incorrect. Their true affiliations, however, are not entirely resolved to satisfaction.[1]

List of Genera

Subfamily Bledionotinae

  • Austropamphantus
  • Bledionotus
  • Pamphantus

Subfamily Henestarinae

  • Engistus
  • Henestaris

Subfamily Ischnorhynchinae (this subfamily is occasionally treated at the family level)

  • Acanthocrompus
  • Cerocrompus
  • Crompus
  • Kleidocerys
  • Koscocrompus
  • Neokleidocerys
  • Pylorgus

Subfamily Lygaeinae (list incomplete; at least 30 included genera)

  • Lygaeus
  • Lygaeospilus
  • Melanocoryphus
  • Melanopleurus
  • Neacoryphus
  • Ochrimnus
  • Oncopeltus

Subfamily Orsillinae (this subfamily is occasionally treated at the family level)

  • Austronysius
  • Belonochilus
  • Eurynysius
  • Hyalonysius
  • Lepionysius
  • Neortholomus
  • Neseis
  • Nithecus
  • Nysius
  • Oceanides
  • Orsillus
  • Ortholomus
  • Reticulatonysius
  • Xyonysius

Subfamily Psamminae

  • Psammium
  • Saxicoris
  • Sympeplus


External links