None.
Anisostena angustata Pic.
Anisostena (Apostena) can be distinguished by the following combination of characters:
Body elongate, slender, coarsely punctate.
Head: medial sulcus present; apical 5 antennomeres wider than preceding; fronsfrons:
upper anterior portion of head capsule above the clypeus
medially impressed; vertexvertex:
occupies the area behind and between the eyes
with medial sulcus present or absent; eyeeye:
elongate, slightly prominent, multifaceted; usually slightly kidney-shaped
little swollen.
Antennaantenna:
3 to 11 segments, inserted in antennal pit in front of eyes
: with 11‑antennomeres; antennomere 1 subglobose; 2 cylindrical, as wide as 1; 3 to 6 gradually widening; 7 to 11 forming a club, wider than preceding.
Pronotumpronotum:
occupies all of dorsal part of the prothorax; in anterior angles or posterior angles there may be a small tubercle or pore with a seta
: basal impression present; tooth present in anterior angle.
Elytronelytron:
strongly sclerotized mesothoracic wings, remaining open during flight. When closed, they cover to the last abdominal segment. Most genera are sculptured with large punctures usually in regular rows; with various combinations of costae, carinae, spines, or tubercles; however some genera are smooth. Lateral and apical margins are dentate, serrate or smooth. Humerus is usually rounded but may be produced and bear spines or expansions.
: with 8 rows of punctures plus scutellar row; tricostate; costate elytral intervals 2, 4, and 6 do not unite near apex.
Leg: mesotibia strongly curved; femora without large tooth.
Argentina, Brazil.
Described species: 2 (Staines 2012). Key: Staines 1993c.
Grasses (Poaeae).
Staines, C. L. 1993c. A revision of the genus Anisostena Weise (Coleoptera: Chrysomelidae, Hispinae). Part I. Introduction and the subgenera Neostena and Apostena. Insecta Mundi 7:183‑190.
Staines, C. L. 2012. Tribe Chalepini. Catalog of the hispines of the world (Coleoptera: Chrysomelidae: Cassidinae). http://entomology.si.edu/Collections_Coleoptera.html