Morphology of two Larinus Dejean (Coleoptera: Curculionidae) species introduced into North America for biological control of knapweeds

The morphology of two introduced knapweed feeders Larinus obtusus Gyllenhal, 1835 and Larinus minutus Gyllenhal, 1835 is investigated. The external and internal morphological characters are described for both sexes. The most promising discriminative characters including male and female terminal segments and genitalia structure are illustrated.

A review of the Palaearctic species of Larinus Dejean (Coleoptera: Curculionidae) in C. J. Schoenherr collection: nomenclature and lectotype designations

The syntypes of 41 species of Larinus Dejean described by L. Gyllenhal and C. H. Boheman, housed at the C. J. Schoenherr collection in the Swedish Museum of Natural History, Stockholm and the Museum of Evolution, Uppsala University, are examined. Lectotypes are designated, a nomenclatural review performed, many previous synonyms confirmed and three new synonyms proposed: Larinus planus (Fabricius, 1792) (= Larinus rusticanus Gyllenhal, 1835 syn. nov.); Larinus carlinae (Olivier, 1807) (= Larinus sulphurifer Boheman, 1843 syn. nov.); Larinus minutus Gyllenhal, 1835 (= Larinus puncticollis Capiomont, 1874 syn. nov.). Colour images for 15 lectotypes are presented.

The species of Larinus Dejean, 1821 (Coleoptera: Curculionidae) described by J. Desbrochers : lectotype designations and new synonymies

Based on a study of the types of species described by J. Desbrochers in the genus Larinus Dejean, several nomenclatural changes are proposed. Lectotypes are designated (or Holotypes recognized) for the following species names: Larinus stricticollis Desbrochers, L. interruptus Desbrochers, L. breviusculus Desbrochers, L. villosiventris Desbrochers, L. villosicollis Desbrochers, L. distinguendus Desbrochers, L. senilis (Fabricius) var. rubripes Desbrochers, L. crassiusculus Desbrochers, L. obesulus Desbrochers, L. sacer Desbrochers, L. hierolosymae Desbrochers, L. cribricollis Desbrochers, L. elegans Desbrochers, L. densicollis Desbrochers, L. akbesianus Desbrochers, L. rugithorax Desbrochers, L. tauricus Desbrochers. Eight new synonymies are proposed: Larinus ursus (Fabricius, 1792) [= Larinus senilis (Fabricius) var. rubripes Desbrochers, 1892 syn. n. ]; Larinus fucatus Faust, 1891 [= Larinus sacer Desbrochers,1896 syn. n. ]; Larinus brenskei Faust, 1890 [= Larinus akbesianus Desbrochers, 1897 syn. n.]; Larinus crassiusculus Desbrochers, 1895 [= Larinus khnzoriani Ter-Minassian, 1962, syn. n.]; Larinus lederi Faust, 1889 [= Larinus cribricollis Desbrochers, 1896, syn. n.]; Larinus sturnus (Schaller, 1783) [= Larinus rugithorax Desbrochers, 1897, syn. n.]; Larinus sibiricus Gyllenhal, 1836 [=Larinus distinguendus Desbrochers, 1892 syn. n.]; Larinus cardopatii Lucas, 1849 [=Larinus densicollis Desbrochers, 1897 syn. n. ]. The name of Larinus hierolosymae Desbrochers, 1896 is corrected and become Larinus hierosolymae Desbrochers, 1896 [emendation]. Larinus obesulus Desbrochers, 1896 is assigned to the subgenus Cryphopus Petri, 1907. Larinus villosicollis Desbrochers, 1892 and L. hierosolymae Desbrochers, 1896 are placed in the subgenus Phyllonomeus Gistel, 1856. Larinus tauricus Desbrochers, 1897 belongs to the subgenus Larinomesius Reitter, 1924. At the present time, the types of three species are not located : Larinus rufipes Desbrochers, 1870, Larinus numidicus Desbrochers, 1892 and Larinus minutus Gyllenhal var. minutissimus Desbrochers, 1891.