Cedar Creek
Ecosystem Science Reserve

Insects of Cedar Creek



(Stink Bugs)

(Table of Species)

The Stink Bugs (247 NA spp, 59 MN spp) are represented by four subfamilies and 35 species at Cedar Creek. The  Acanthosomatinae (with 2-segmented tarsi), the Scutellerinae (with enlarged scutellum), and the Pentatominae (common stink bugs) are phytophagous.  The Asopinae are predaceous.

Two species of Homaemus occur in CCESR old fields. H. aenifrons has an entirely black face, and H. bijugis has a pale yellow line on each cheek. H. bijugis is the more common of the two.  Some individuals have faint facial stripes, and it is possible these two species hybridize? Homaemus spp are fairly common in a variety of field types, but seem shoewhat more numerous in xeric sites. Eurygaster alternatus is less common, but has also been collected in a variety of fields.  Phimodera binotata is a rare species that has only been collected in extremely xeric fields.  Members of these genera probably feed on grass seeds.  Tetyra bipunctata is an uncommon large Scutellerid that feeds on seeds in pine cones.

These Stink Bugs are generally golden with red markings. Elasmucha lateralis occurs on birch in woodlands where the females guards her nymphs. Elasmostethus cruciatus occurs on alder in swamps, and Elasmostethus atricornis is an uncommon species found on Aralia in woodlands.

A single uncommon? species of Turtle Bug, Amaurochrous brevitylus?, occurs in marshes.  It is suspected to feed on cattail heads.  This species is small, dark, with an enlarged scutellum, resembling the Scutellerinae.  Brochymena quadripustulata and Brochymena arborea are uncommon tree/shrub inhabitants that are suspected to be predaceous. The are flattened, jagged-edged and dark resembling bark. Mecidea major is a pale elongate Pentatomid that is reported to feed upon Bouteloua curtipendula. This species is a new state record taken only in E (xeric Aristida).

The following species are large and green. Banasa dimidiata is a common woodland species. Acrosternum hilare is another wood edge species that feeds on Prunus and Amelanchier fruit. Thyanta accerra ? was taken in three fields but only in 1990. Pitedia persimilis has been collected in small numbers from a variety of fields but appears to be more common in xeric sites. I suspect it may feed on Vicia villosa and/or Lathyrus venosus seed pods.

Cosmopepla bimaculata is a small black and red species often found on Hedge Nettle (Stachys palustris) or mullein (Verbascum thapsus). Pitedia ligata? is a rare large black and red-bordered species collected only in 1988? Mormidea lugens is a small black and bronze species with scutellum outlined in yellow. It is fairly common. Dendrocoris humeralis is an uncommon red-tinged woodland species.

The following species have the scutellum nearly equalling the coria in length. Neottiglossa undata is apparently a rare species on the Area. It has only been taken in a few fields. It is abundant in Poa fields across the state. Coenus delius is relatively common in a variety of fields. Aelia americana is somewhat less common but still widespread. It appears more abundant in brome fields. These species are all suspected to feed on grass seeds.

Trichopepla atricornis? is an uncommon pentatomid with erect hairs on the dorsum.  Holcostethus limbolarius is common and widespread but more abundant in xeric and weedy sites. Three species of Euschistus have been collected from CCESR old fields. E. variolarius has pointed humeral angles and juga and tylus are equal in length. E. servus-euschistoides has rounded humeral angles and the juga exceed the tylus. Both are relatively common in a variety of field types. E. ictericus has a callous ridge running between its pointed humeri. It is considerably less common. A fourth species of Euschistus, E. tristigmus, is a common woodland species often found on cherry and juneberry.

As mentioned earlier, members of this family are predaceous--generally on Coleoptera or Lepidoptera larvae. All are rather infrequently encountered. Perillus circumcinctus, marked with maroon and white, has been been observed feeding on adult and larval Trirhabda in a few fields. Stiretrus anchorago, a robust Calligrapha-like fellow, has been observed feeding on Blepharida larvae on sumac clones at field edges. Small numbers of three species of Podisus (placidus, modestus, brevispinus) have been collected. A few individuals of the large Apateticus cynicus have also been collected.

webmaster@cedarcreek.umn.edu Last updated May, 2000