JaŁoszyŃski PaweŁ
Museum of Natural History, University of Wrocław, Sienkiewicza 21, 50-335 Wrocław, Poland..
Zootaxa. 2018 Nov 25;4524(5):567-580. doi: 10.11646/zootaxa.4524.5.4.
Based on examination of type species, the subgenera Palaeoconnus Franz and Heterotetramelus Franz are removed from Euconnus Thomson. Adults of Palaeoconnus have the prosternum bearing a subtriangular prosternal process and their metacoxae are contiguous, which exclude this taxon from Euconnus. Palaeoconnus is transferred to Sciacharis Broun as subgenus and redefined. The lectotype is designated for its type species, Scydmaenus brevipes Sharp. Sciacharis andicola (Franz), previously treated as incertae sedis within Sciacharis, is placed in Palaeoconnus. Heterotetramelus is also excluded from Euconnus, on the basis of the mesoventrite lacking the mesoventral intercoxal process and the contiguous metacoxae. Heterotetramelus stat. n. is elevated to genus rank and redefined, and the lectotype is designated for its type species, Euconnus caledonicus Franz. Moreover, the newly defined Heterotetramelus is reclassified to include four subgenera: Heterotetramelus s. str. (with seven species distributed in New Caledonia), Sciacharoides Jałoszyński, stat. n. (reduced from genus; with three Australian species); Australosciacharoides subgen. n. (with only one Australian species transferred from Sciacharoides); and Tamborinus subgen. n. (also with one Australian species transferred from Sciacharoides).
基于对模式种的研究，将古锥属（Palaeoconnus Franz）和异四股节属（Heterotetramelus Franz）从真锥属（Euconnus Thomson）中移除。古锥属的成虫前胸腹板有一个近三角形的前胸腹板突，且其基节相连，这使其不属于真锥属。古锥属被转移到布氏隐翅虫属（Sciacharis Broun）作为亚属并重新定义。为其模式种短足隐翅虫（Scydmaenus brevipes Sharp）指定了选模。以前在布氏隐翅虫属内地位不明的安第斯布氏隐翅虫（Sciacharis andicola (Franz)）被归入古锥属。异四股节属也因中胸腹板缺乏中胸腹板基节间突且基节相连而被排除在真锥属之外。异四股节属（Heterotetramelus stat. n.）被提升为属级并重新定义，为其模式种加里东真锥（Euconnus caledonicus Franz）指定了选模。此外，新定义的异四股节属被重新分类，包括四个亚属：狭义异四股节属（Heterotetramelus s. str.，有7个物种分布在新喀里多尼亚）、新异隐翅虫属（Sciacharoides Jałoszyński, stat. n.，从属级降为亚属级，有3个澳大利亚物种）、澳新异隐翅虫亚属（Australosciacharoides subgen. n.，只有1个从新异隐翅虫属转移来的澳大利亚物种）和坦博隐翅虫亚属（Tamborinus subgen. n.，也只有1个从新异隐翅虫属转移来的澳大利亚物种）。
