Imatidium Aslam 1965: 689 not Fabricius.
Imatidium formosum Spaeth.
Aslamidium (Neoaslamidium) can be distinguished by the following combination of characters:
Body elongate, parallel-sided.
Head: fronsfrons:
upper anterior portion of head capsule above the clypeus
concave posteriorly; eyeeye:
elongate, slightly prominent, multifaceted; usually slightly kidney-shaped
projecting; interocular space equal to maximum width of an eyeeye:
elongate, slightly prominent, multifaceted; usually slightly kidney-shaped
; antennaantenna:
3 to 11 segments, inserted in antennal pit in front of eyes
inserted equidistant between eyes and interantennal carina; interantennal carina sharp and united to a transverse carina which encloses oral cavity behind and around labrumlabrum:
triangular, joined to the clypeus and the oral orifice
; labrumlabrum:
triangular, joined to the clypeus and the oral orifice
very short and transverse; maxillary palps with palpomere 4 thicker and slightly longer than 3.
Antenna: with 11-antennomeres, narrowed apically; antennomere 1 thicker and longer than 2; 3 at least 2x length of 2; 4 to 10 decreasing in length; 11 laterally compressed and longer than 10.
Pronotum: small notch on external side of setiferous tubercle within apical emargination; deeply impressed on either side at base; sparsely punctate; rectangular.
Scutellum: broadly triangular.
Elytron: slightly to moderately wider than 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
; lateral margin impunctate; lateral and apical margins narrow, in widest part narrower than 1/2 width of elytral disc.
Venter: prosternal process with deep groove along margins.
Colombia, Costa Rica, Ecuador, Nicaragua, Panamá, Peru, and Venezuela
Described species: 7 (Staines 2012). Key to species: Borowiec (1998); Staines (2006a, 2013).
Spermacoce (Rubiaceae); Calathea (Marantaceae).
Borowiec, L. 1998. Four new species of Aslamidium Borowiec, with description of Neoaslamidium new subgenus (Coleoptera: Chrysomelidae: Hispinae). Genus 9:367-374.
Staines, C. L. 2006. A new combination and two new species of Aslamidium (Coleoptera: Chrysomelidae: Cassidinae). Zootaxa 1195:61-68.
Staines, C. L. 2013. Aslamidium (Neoaslamidium) apertura a new species from Venezuela (Coleoptera: Chrysomelidae: Cassidinae). Proceedings of the Entomological Society of Washington 115(3):286-288.