Discoxenus
Creators: name: Kanao, Taisuke
name: Maruyama, Munetoshi
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Discoxenus

description: Key to the Southeast Asian species of Discoxenus
1. Macrochaetotaxy of abdominal tergites III–VIII = 6, 6, 6, 6, 6, 6............................................... 2
- Macrochaetotaxy of abdominal tergites III–VIII variable...................................................... 7
2. Antennal segment XI approximately 1.4 times longer than wide (Fig. 150); elytra sparsely covered with relatively long setae (Fig. 156).................................................................................. D. katayamai
- Antennal segment IX more than 2 times longer than wide (Figs. 55, 74, 90, 106, 122, 138); elytra covered with no or few short setae except for anterolateral outer corner................................................................. 3
3. Abdominal sternites IV–VII with 2 rows of macrosetae....................................................... 4
- Abdominal sternites IV–VII with 1 row of macrosetae at posterior margin......................................... 5
4. Abdominal sternites IV–VII with 1 pair of macrosetae subapically................................. D. phourini n. sp.
- Abdominal sternites IV–VII with more than 5 pairs of macrosetae (10–11 macrosetae) subapically....... D. hirsutus n. sp.
5. Spermatheca with apical part longer than basal part (Fig. 148)..................................... D. kakizoei n. sp.
- Spermatheca with apical part shorter than basal part (Figs. 88, 120)............................................. 6
6. Median lobe of male aedeagus with distal crest moderately pointed at apex (Fig. 86); paramere with paramerite narrow (Fig. 87)............................................................................... D. kohkongensis n. sp.
- Median lobe of male aedeagus with distal crest rounded apically (Fig. 118); paramere with paramerite broad (Fig. 119)............................................................................................ D. minutus n. sp.
7. Body long, length more than 2.3 mm ...................................................................... 8
- Body short, around 2 mm or less.......................................................................... 9
8. Pronotum sparsely covered with macrosetae (Fig. 27); macrochaetotaxy of abdominal tergites III–VIII = 6, 6, 6, 6, 6, 4; median lobe of male aedeagus with basal capsule with distal crest weakly developed (Fig. 35)...... D. latiabdominalis n. sp.
- Pronotum with macrosetae only at lateral margin (Fig. 127); macrochaetotaxy of abdominal tergites III–VIII = 4, 4, 4, 4, 4, 6; median lobe of male aedeagus with distal crest strongly developed (Fig. 134).......................... D. lucidus n. sp.
9. Macrochaetotaxy of abdominal tergites III–V = 6, 6, 6...................................... D. cambodiensis n. sp.
- Macrochaetotaxy of abdominal tergites III–V = 8, 8, 8....................................................... 10
10. Macrochaetotaxy of abdominal tergites VI–V = 8, 8........................................... D. krishnai Kistner
- Macrochaetotaxy of abdominal tergites VI–V = 6, 6....................................... D. malaysiensis Kistner
description: Published as part of Kanao, Taisuke & Maruyama, Munetoshi, 2015, Eight new species, a new record, and redescription of the genus Discoxenus Wasmann, 1904: The first record of termitophilous rove beetles in Cambodia (Coleoptera: Staphylinidae: Aleocharinae), pp. 201-223 in Zootaxa 4044 (2) on pages 204-205, DOI: 10.11646/zootaxa.4044.2.2, http://zenodo.org/record/241241