Oiceoptoma, Leach, 1815

Sommer, David, Růžička, Jan, Nishikawa, Masaaki & Schneider, Jan, 2021, Oiceoptoma tangi (Coleoptera: Silphidae: Silphinae), a new species of carrion beetle from eastern China, Zootaxa 4949 (3), pp. 445-472 : 470-471

publication ID

https://doi.org/ 10.11646/zootaxa.4949.3.2

publication LSID

lsid:zoobank.org:pub:963F4818-A172-4B1D-A17A-86EB529BCFEB

DOI

https://doi.org/10.5281/zenodo.4647779

persistent identifier

https://treatment.plazi.org/id/A11D4862-FFFF-FF9A-FF79-FABE80B5FE2F

treatment provided by

Plazi

scientific name

Oiceoptoma
status

 

Modified key to Palaearctic Oiceoptoma (modified from Růžička et al. 2004)

The following couplets are modified to accommodate the newly described species.

5. Pronotum with diffuse median spots (usually composed of several scattered darker spots or almost indistinct, Figs. 4B, E View FIGURE 4 ). Scutellum more distinctly punctured medially than laterally ( Fig. 6B View FIGURE 6 ). Elytra brown to black, subapical surface with rugosities ( Figs. 2A, D View FIGURE 2 , 9C View FIGURE 9 ). Male genital segment with ventrite 9 anteriorly distinctly longer than tergum 9 in ventral view ( Fig. 12E View FIGURE 12 ).— Proventrite with dense punctation laterally; medially dark brown to black, laterally only narrowly orange in ventral view ( Fig. 5B View FIGURE 5 ). Median lobe of aedeagus subapically distinctly sinuous laterally, tapering to a widely rounded apex ( Figs. 11C–D View FIGURE 11 ). Basal portion oval, robust, not exceeding the width of aedeagus ( Figs. 11C–D View FIGURE 11 ). Female tergum 7 posteriorly with wide, only weakly expressed emargination ( Fig. 16A View FIGURE 16 ). Female tergum 8 truncate posteriorly ( Fig. 13C View FIGURE 13 ). (Central and north-eastern China, Far East of Russia, Korean Peninsula to Japan)..................................................... O. subrufum (Lewis)

– Pronotum with four black distinct spots, arranged in a trapezoidal pattern ( Figs. 4A, C View FIGURE 4 ). Scutellum with homogeneous punctation ( Figs. 6A, C View FIGURE 6 ). Elytra subapically with simple surface ( Figs. 1A, D View FIGURE 1 , 2E View FIGURE 2 , 3A View FIGURE 3 , 9A–B, D View FIGURE 9 ). Male genital segment with ventrite 9 anteriorly as long as tergum 9 in ventral view ( Figs. 12D, F View FIGURE 12 ).................................................. 6

6. Spots on pronotum distinctly delimited, smooth and glossy, only with sparsely distributed, minute punctures with very short setae ( Figs. 4C, F View FIGURE 4 ). Proventrite with only minute, superficial punctation laterally; completely dark brown to black in ventral view ( Fig. 5C View FIGURE 5 ). Elytra black ( Figs. 2E View FIGURE 2 , 3A View FIGURE 3 , 6F View FIGURE 6 , 9D View FIGURE 9 ). Apex of elytron short and rounded in female ( Figs. 2E View FIGURE 2 ). Surface of scutellum and elytra with very weak, superficial punctation ( Figs. 6C, F View FIGURE 6 , 9D View FIGURE 9 ). Median lobe of aedeagus gradually tapered to a slender, sharp apex ( Fig. 11E View FIGURE 11 ). Basal portion oval, less robust, not exceeding the width of aedeagus ( Fig. 11E View FIGURE 11 ). Female tergum 7 posteriorly simple, without emargination ( Fig. 16C View FIGURE 16 ). Female tergum 8 broadly truncate posteriorly ( Fig. 14A View FIGURE 14 ). Female ventrites 5 and 6 longer medially, posteriorly exposing only a shorter area of brick-wall pattern ( Figs. 14B View FIGURE 14 , 15E View FIGURE 15 ). ( Japan)............................................................................................... O. nigropunctatum (Lewis)

– Spots on pronotum vaguely delimited, regularly covered with fine, distinct punctures, covered by long, orange setation ( Figs. 4A, D View FIGURE 4 ). Proventrite with dense punctation laterally; medially dark brown to black, laterally widely orange in ventral view ( Fig. 5A View FIGURE 5 ). Elytra light to dark brown ( Figs. 1A, D View FIGURE 1 , 6D View FIGURE 6 , 9A–B View FIGURE 9 ). Apex of elytron elongated to blunt tip in female ( Figs. 1D View FIGURE 1 , 8A View FIGURE 8 , 9B View FIGURE 9 ). Surface of scutellum and elytra with distinct, deep punctation ( Figs. 6A, D View FIGURE 6 , 9A–B View FIGURE 9 ), Median lobe of aedeagus gradually tapered to widely rounded, triangular apex ( Figs. 11A–B View FIGURE 11 ). Basal portion widely oval, very narrow, markedly exceeding the width of aedeagus ( Figs. 11A–B View FIGURE 11 ). Female tergum 7 posteriorly with narrow, deep emargination ( Fig. 17A View FIGURE 17 ). Female tergum 8 regularly rounded posteriorly ( Figs. 13A View FIGURE 13 , 17A View FIGURE 17 ). Female ventrites 5 and 6 very short medially, posteriorly with long area of brick-wall pattern ( Figs. 15A–B, F View FIGURE 15 ) ( China: Zhejiang Province). .... O. tangi Sommer, Růžička, Nishikawa & Schneider , new species

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Silphidae

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