The relative population sizes of a species complex of Chauliognathus are reported, as well as their spatial distribution associated with different patches of food plants. Field work was done at Fazenda Santa Isabel, municipality of Guaíba, State of Rio Grande do Sul, Brazil. The results suggest that two mechanisms account for the reduction in food competition among the species involved: one is ...

A new species of Falsopodabrus Pic, 1927 is described, Falsopodabrus tridentatus Yang, sp. n. (Yunnan, China). Geometric morphometric analyses based on the shapes of pronotum and hind wing and comparisons with two sibling species, Falsopodabrus himalaicus Wittmer, 1974 and Falsopodabrus martensi (Wittmer, 1979), support the valid status of the new species, also confirmed by the characters of ta...

Two new species of Fissocantharis Pic are described, Fissocantharisbifoveatus sp. n. (CHINA: Yunnan) and Fissocantharisacuticollis sp. n. (CHINA: Zhejiang, Fujian, Guangdong, Hunan). Fissocantharispieli (Pic, 1937) is redescribed and Fissocanthariskontumensis Wittmer, 1989 is provided with a supplementary description. Fissocantharisshanensis (Wittmer, 1997) is synonymized with Fissocanthariskon...

The male of Themus (Haplothemus) coriaceipennis (Fairmaire, 1889) is discovered and described for the first time. Three new species related to this species are described from China: T. (H.) rectus sp. nov., T. (H.) bimaculaticollis sp. nov. and T. (H.) licentimimus sp. nov., which are provided with the illustrations of habitus and genitalia of both sexes and abdominal sternites VIII of female. ...

Three new species of Paramaronius Wittmer from southeastern Brazil are described and illustrated: Paramaroniusserranus sp. n., Paramaroniusbrancuccii sp. n. and Paramaroniuscavipennis sp. n. Paramaroniusimpressipennis (Pic) is redescribed, with supplementary description of the female. This species is recorded from Northeastern Brazil for the first time and its distribution pattern is discussed....

Both the color patterns of the body and the structures of the male genitalia are important characters used in species identification of traditional taxonomy. However, these characters are often limiting when identifying females of some species. In this study, we attempted to evaluate the species reality of Asiopodabrus fragiliformis which often has difficulty in being identified due to individu...

The species of Stenothemus Bourgeois, 1907 from Southwest China are reviewed. Three transferred to this genus, S. davidi (Pic, 1926) comb. nov. (from Malthacus Kirby, 1837), minutissimus 1933) Micropodabrus Pic, 1920) and singularicollis Lycocerus Gorham, 1895). Two new synonyms suggested, dinshuiensis Švihla, 2011 syn. is synonymized with melleus 2005 singularicollis. shaanxiensis 2004 stat. r...