Diochus Erichson

Zhou, Yu-Lingzi & Zhou, Hong-Zhang, 2016, Taxonomy of the genus Diochus Erichson, 1839 (Coleoptera: Staphylinidae, Staphylininae, Diochini) in China with descriptions of four new species, Zootaxa 4127 (1), pp. 1-30 : 3

publication ID

https://doi.org/ 10.11646/zootaxa.4127.1.1

publication LSID

lsid:zoobank.org:pub:9E858916-3F3A-4D87-B987-B62CE241CED0

DOI

https://doi.org/10.5281/zenodo.6063243

persistent identifier

https://treatment.plazi.org/id/7C5887A3-FFE2-B25F-FF6A-FAF437F9F847

treatment provided by

Plazi

scientific name

Diochus Erichson
status

 

Key to species of the genus Diochus Erichson View in CoL recorded from China

1 Left mandible with blunt teeth ( Fig. 10 View FIGURE 10 H); body small, not longer than 3 mm; protarsi not dilated ( Fig. 10 View FIGURE 10 L); distribution in China not confirmed................................................................. D. pulchellus Cameron View in CoL

- Left mandible with sharp teeth; body usually longer than 3 mm; protarsi dilated ( Fig. 4 View FIGURE 4 M)............................ 2

2 Antennomere II obviously shorter than III ( Fig. 4 View FIGURE 4 G).......................................................... 3

- Antennomere II slightly shorter than (or subequal in length to) III ( Fig. 5 View FIGURE 5 G)....................................... 5

3 Body large, ca. 6.0 mm; head length 1.2 times longer than width; distribution in China not confirmed.. D. japonicus Cameron View in CoL

- Body medium sized, ca. 5.1 mm; head length 1.3-1.4 times longer than width...................................... 4

4 Right mandible with a long and sharp tooth ( Fig. 9 View FIGURE 9 J); aedeagus not well-sclerotized, with paired stick-like apical sclerites ( Fig. 9 View FIGURE 9 E-G); distribution in China not confirmed........................................... D. conicollis (Motschulsky) View in CoL

- Right mandible with a smaller and not very sharp tooth ( Fig. 4 View FIGURE 4 J); aedeagus well-sclerotized, with paired horn-like apical scler- ites ( Fig. 4-1 View FIGURE 4 E, F).................................................................... D. bicornutus View in CoL sp. nov.

5 Body small sized, 3.3 mm; aedeagus with T-shaped internal sclerite ( Fig. 8 View FIGURE 8 ); distribution in China not confirmed........................................................................................ D. antennatus (Motschulsky) View in CoL

- Body slightly longer than 3.4, or distinctly longer (ca. 4 mm); aedeagus without distinct sclerite....................... 6

6 Head not possessing a median elevation between eyes.................................... D. membranaceus View in CoL sp. nov.

- Head possessing a median elevation between eyes ( Fig. 1, medial elevation)....................................... 7

7 Gular sutures deep and confluent before base ( Fig. 6 View FIGURE 6 D).................................... D. bisegmentatus View in CoL sp. nov.

- Gular sutures normally deep and not confluent before base ( Fig. 5 View FIGURE 5 D).......................... D. ampullaceus View in CoL sp. nov.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

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