Oodescelis

Bai, Xing-Long, Li, Xiu-Min & Ren, Guo-Dong, 2019, A review of the genus Oodescelis Motschulsky, 1845 (Coleoptera: Tenebrionidae Platyscelidini) from China, Zootaxa 4656 (3), pp. 401-430: 406

publication ID

https://doi.org/10.11646/zootaxa.4656.3.1

publication LSID

lsid:zoobank.org:pub:9789BD3C-1DCE-4483-BDAD-A506B88C30FB

persistent identifier

http://treatment.plazi.org/id/03A687DC-3379-8871-97A4-2CFC8195F8A7

treatment provided by

Plazi

scientific name

Oodescelis
status

 

Key to species of the genus Oodescelis  from China (based on males)

1. Anterior margin of pronotum deeply emarginate, anterior angles sharp........................................... 2

- Anterior margin of pronotum straight or nearly straight, anterior angles obtuse..................................... 6

2. Prosternal process, in lateral view, weakly obtuse apically; elytra elongate-oval, surface of elytral apex and epipleura dull, surface of epipleura without punctures or wrinkles (subgenus Planoodescelis  )..................................... 3

- Prosternal process, in lateral view, sharp apically; elytra oval, surface of elytral apex and epipleura shiny, surface of epipleura with punctures and wrinkles (subgenus Acutoodescelis  )....................................................... 4

3. Body black; pronotum widest at base, disc with dense punctures; elytra flattened, width at middle almost equal to that at base; abdomen without setal brush; metatibiae slightly curved; parameres much shorter than phallobase, base of parameres nearly as wide as apex, distal part wide and flat ( Figs. 39–40View FIGURES 31–42).............. Oodescelis (Planoodescelis) kansouensis Kaszab, 1940 

- Body brown; pronotum widest at middle, disc with very sparse punctures; elytra weak convex, width at middle obviously wider than that at base; abdominal ventrites 1, 2 and 5 with setal brush at middle; metatibiae straight; parameres nearly as long as phallobase, base of parameres strongly wider than apex, distal part narrow and long ( Figs. 41–42View FIGURES 31–42)................................................................................ Oodescelis (Planoodescelis) lii Bai & Ren  , sp. nov.

4. Pronotal punctures elongate, merging into distinct longitudinal long furrows at sides; metatibiae weakly curved................................................. Oodescelis (Acutoodescelis) punctatissima punctatissima ( Fairmaire, 1886) 

- Pronotal punctures round, part of them merging into extremely short longitudinal furrows at sides; metatibiae straight..... 5

5. Elytral punctures as large as those on pronotum but sparser; base of parameres not parallel laterally ( Fig. 15View FIGURES 15–30)......................................................... Oodescelis (Acutoodescelis) punctatissima emmerichi Kaszab, 1940 

- Elytral punctures smaller than those on pronotum but much sparser; base of parameres more parallel laterally ( Fig. 17View FIGURES 15–30).......................................... Oodescelis (Acutoodescelis) punctatissima henanana Bai & Ren  , subsp. nov.

6. Protibiae club-shaped (basal half thin, widening into club-shaped from middle to apex) ( Figs. 5–6View FIGURES 5–14); parameres nearly as long as phallobase (subgenus Clavatoodescelis  )................................................................. 7

- Protibiae evenly widening from base to apex ( Figs. 7–8, 10View FIGURES 5–14); or protibiae axe-shaped (basal half thin, inner side strongly widening into axe-shaped from middle to apex) ( Figs. 9, 11–14View FIGURES 5–14); parameres much shorter than phallobase.................... 8

7. Length of the tibial club on protibiae much longer than width in ventral view; apex of parameres strongly hook-liked curved to dorsal side in lateral view ( Fig. 26View FIGURES 15–30)............................ Oodescelis (Clavatoodescelis) oblonga ( Ballion, 1878) 

- Length of the tibial club on protibiae nearly as long as width in ventral view; apex of parameres weakly hook-liked curved to dorsal side in lateral view ( Fig. 24View FIGURES 15–30)....................... Oodescelis (Clavatoodescelis) acutanguloides Kaszab, 1940 

8. Protibiae evenly widening from base to apex ( Fig. 7View FIGURES 5–14); parameres not flattened, without longitudinal groove at middle, phallobase without lateral prominences or deep longitudinal groove (subgenus Convexoodescelis  ).................................................................... Oodescelis (Convexoodescelis) brevipennis brevipennis (Kaszab, 1938) 

- Protibiae axe-shaped ( Figs. 9, 11–14View FIGURES 5–14); or protibiae evenly widening from base to apex ( Figs. 8, 10View FIGURES 5–14); parameres flattened, with longitudinal groove at middle, phallobase with lateral prominences and deep longitudinal groove (subgenus Ovaloodescelis  ) 9

9. Protibiae evenly widening from base to apex ( Figs. 8, 10View FIGURES 5–14).................................................... 10

- Protibiae axe-shaped ( Figs. 9, 11–14View FIGURES 5–14).................................................................... 11

10. Pronotum narrowly depressed along lateral margins from base to middle; inner side of metatibiae weakly curved at middle; outer margins of parameres with sharp hooks at apex in dorsal view ( Fig. 29View FIGURES 15–30).................................................................................................. Oodescelis (Ovaloodescelis) ovalis ( Ballion, 1878) 

- Pronotum not depressed along lateral margins; inner side of metatibiae strongly curved at middle; outer margins of parameres with round hooks at apex in dorsal view ( Fig. 27View FIGURES 15–30)................... Oodescelis (Ovaloodescelis) affinis ( Seidlitz, 1893) 

11. Length of the axe shorter than half length of protibiae ( Fig. 14View FIGURES 5–14); outer margins of parameres with round hooks at apex in dorsal view ( Fig. 37View FIGURES 31–42)............................................... Oodescelis (Ovaloodescelis) tibialis ( Ballion, 1878) 

- Length of the axe as long as half length of protibiae ( Figs. 9, 11–13View FIGURES 5–14); outer margins of parameres with obtuse or sharp hooks at apex in dorsal view ( Figs. 31, 33, 35View FIGURES 31–42).................................................................... 12

12. Outer margins of parameres with short and obtuse hooks at apex in dorsal view ( Figs. 33, 35View FIGURES 31–42)........................ 13

- Outer margins of parameres with long and sharp hooks at apex in dorsal view ( Fig. 31View FIGURES 31–42)............................. 14

13. Pronotum wider, not flattened laterally, depressed along lateral margins between base and middle; parameres long, narrowing forward from middle laterally ( Fig. 33View FIGURES 31–42)..................... Oodescelis (Ovaloodescelis) similis similis (Kaszab, 1938) 

- Pronotal disc more convex, weakly flattened laterally, not depressed along lateral margins; parameres short, narrowing forward from base laterally ( Fig. 35View FIGURES 31–42)................................. Oodescelis (Ovaloodescelis) subattenuata Egorov, 1991 

14. Parameres long, apex hook-liked curved to dorsal side in lateral view.. Oodescelis (Ovaloodescelis) heydeni ( Seidlitz, 1893) 

- Parameres short, apex not hook-liked curved to dorsal side in lateral view ( Figs. 31–32View FIGURES 31–42).................................................................................... Oodescelis (Ovaloodescelis) pseudotibialis Skopin, 1973