Tyrodes Raffray, 1908

Inoue, Shota & Nomura, Shûhei, 2023, New species and record of Tyrodes Raffray (Coleoptera: Staphylinidae: Pselaphinae) from Japan, Zootaxa 5375 (1), pp. 83-92 : 84

publication ID

https://doi.org/ 10.11646/zootaxa.5375.1.4

publication LSID

lsid:zoobank.org:pub:30782E67-2E2C-4B63-9809-85C3945187AE

DOI

https://doi.org/10.5281/zenodo.10196737

persistent identifier

https://treatment.plazi.org/id/03861C35-FFD9-FFF6-FF69-8728FCC6F948

treatment provided by

Plazi

scientific name

Tyrodes Raffray, 1908
status

 

Genus Tyrodes Raffray, 1908 View in CoL

[Japanese common name: Nisekoke-arizukamushi Zoku]

Tyrodes Raffray, 1908: 379 View in CoL . Type species: Tyrus histrio L. W. Schaufass, 1887 View in CoL (subsequent designation by Lucas 1920: 663). Tyrodites Jeannel, 1960: 455 View in CoL . Type species: Tyrodites championi Jeannel, 1960 View in CoL (synonymized by Besuchet 1970: 316).

Diagnosis. Head with small, nude frontal median fovea and one pair of larger, setose vertexal foveae; maxillary palpi large, each with palpomeres 2–4 each pedunculate basally, widened apically; palpomeres 4 each with sensory appendage at apex; pronotum with antebasal sulcus connecting median and lateral foveae; abdomen with tergite IV longer than V; aedeagus stout, with ovoid median lobe ( Raffray 1908; Jeannel 1957; Yin & Li 2013).

Comments. The genus Tyrodes is similar to Tyrus Aubé, 1833 in their general appearances, but it is distinguished from the latter by the following characteristics: frontal median fovea small, nude (distinct, larger, setose in Tyrus ); abdominal tergite IV longer than V (IV and V subequal in Tyrus ) ( Yin & Li 2013). In addition, after an examination of previous studies and the specimens studied in this paper, the following characteristics may also be useful for separation of both genera: male antennomeres 1 each with triangular projection on the external side of the basal part ( Figs 1C View FIGURE 1 , 5C View FIGURE 5 ) (usually lacking the triangular projection in Tyrus , but T. sichuanicus Yin & Nomura, 2013 has laterally expanded antennomeres 1), and tergite IV lacking median longitudinal carina ( Fig. 3A View FIGURE 3 ) (usually present in Tyrus , but lacking in T. myrmecophilus Bryant, 1915 ) ( Raffray 1908; Bryant 1915; Jeannel 1957; Besuchet 1970; Yin & Li 2013; Yin et al. 2013; Zhang & Yin 2023).

The genus Megatyrus Hlaváč & Nomura, 2003 share the characteristic of antennomeres 1 with Tyrodes , but the members of Megatyrus are easily separated from Tyrodes by the larger body, maxillary palpi with palpomeres 4 each lacking apical appendage, and tergite IV with well-defined median longitudinal carina ( Hlaváč & Nomura 2003).

Among the Japanese Tyrodes species, the male shares following characteristics: posterolateral clypeal region strongly concave with demarcate edge ( Fig. 2A, C, D View FIGURE 2 ); metaventrite with small setose projection ( Figs 1E View FIGURE 1 , 5D View FIGURE 5 ); sternite IV–V strongly concave at lateral parts ( Figs 1F View FIGURE 1 , 3B View FIGURE 3 , 5E View FIGURE 5 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Loc

Tyrodes Raffray, 1908

Inoue, Shota & Nomura, Shûhei 2023
2023
Loc

Tyrodes

Besuchet, C. 1970: 316
Lucas, R. 1920: 663
Raffray, A. 1908: 379
1908
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