Platyceroides Benesh

Paulsen, M. J., 2017, Correction of existing generic and species concepts in Platyceroidini (Coleoptera: Lucanidae: Lucaninae) and the description of four new species of Platyceroides Benesh, Zootaxa 4269 (3), pp. 346-378 : 373-374

Key to known Females of Platyceroides Benesh

Females of P. viriditinctus (Benesh) are unknown.

1. Mesotibiae and metatibiae robust (see Fig. 17 )......................................... Platyceroides keeni (Casey)

- Mesotibiae and metatibiae long and narrow (see Fig. 18 )..................................................... 2

2. Head wider across genae than across eyes, anterior margin of head distinctly emarginate (see Fig. 19)... P. laticollis (Casey)

- Head as wide across genae as across eyes, or narrower across genae; anterior margin of head weakly emarginate, almost trun- cate (see Fig. 20)..................................................................................... 3

3. Clypeus thickened, tumid anteriorly, strongly declivous before labrum, as in Fig. 21 ...................... P. latus (Fall)

- Clypeus normal, not raised medially, descending to labrum, as in Fig. 22........................................ 4

4. Elytra with microsculpture causing surface to appear dull or opaque............................................ 5

- Elytra glossy and polished, surface lacking microsculpture.................................................. 10

5. Elytra with weakly to strongly impressed, punctate striae..................................................... 6

- Elytra lacking impressed, punctate striae (irregular, impunctate longitudinal furrows appearing false striae may be present)..................................................................................................... 9

6. Elytral striae at most weakly impressed on disc, obsolete laterally; northern Sierra Nevadas , California ................. 7

- Striae distinctly impressed; coastal mountains.............................................................. 8

7. Pronotum strongly shagreened.............................................................. P. potax Paulsen

- Pronotum glossy, lacking microsculpture.......................................... P. barrae, Paulsen , new species

8. Antennal club longer than funicle................................................ P. infernus Paulsen , new species

- Antennal club shorter than funicle........................................... P. pampinatus Paulsen , new species

9. Antennal club small, shorter than funicle; Klamath Mountains , Oregon ........................... P. marshalli Paulsen

- Antennal club larger, longer than funicle; Sierra Nevadas, California................................ P. opacus (Fall)

10. Color light reddish brown with green reflection; Washington south to northern Oregon ............. P. aeneus (Van Dyke)

- Color usually darker, if reddish brown (teneral) then lacking green reflection; south of northern Oregon................ 11

11. Elytral form short, widest at apical third...................................................................12

- Elytral form elongate, elytra more or less parallel-sided, widest at apical fourth.................................. 13

12. Antennal club small, compact and distinctly shorter than funicle................................ P. agassii (LeConte)

- Antennal club distinctly larger, as long as funicle............................................. P. pacificus (Casey)

13. Known only from Humboldt County, California........................................... P. californicus (Casey)

- Not found in Humboldt County, California............................................................... 14

14. Antennal club largely pubescent; San Francisco Bay area north to Sonoma County, California ........ P. thoracicus (Casey)

- Antennal club with proximal two antennomeres mostly glabrous; southwestern Oregon .... P. umpquus Paulsen , new species

Figures

FIGURES 17 – 18. Mesotibiae and metatibiae in Platyceroides. 17, Platyceroides keeni, tibiae robust. 18, Platyceroides opacus, tibiae typical of remainder of genus.

FIGURES 21 – 22. Clypeal elevation in Platyceroides. 21, Platyceroides latus, clypeus distinctly raised, thickened. 22, Platyceroides opacus, clypeus normally declivous to labrum, typical of remainder of genus.