Dicranocentrus
Creators: name: Ma, Yitong
name: Chen, Jian-Xiu
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Entognatha
Collembola
Entomobryidae
Dicranocentrus

description: Key to the Asian Dicranocentrus species
1 Dental spines absent.....................................................................................................................................2
- Dental spines present..................................................................................................................................21
2 Abd. I without macrochaetae........................................................................................................................3
- Abd. I with macrochaetae.............................................................................................................................4
3 Seven macrochaetae in posterior group on dorsal head, abd. IV with 3 macrochaetae ................halophilus
- Four macrochaetae in posterior group on dorsal head, abd. IV with 2 macrochaetae .......................litoreus
4 Abd. I with 2 macrochaetae ............................................................................................................singularis
- Abd. I with more than 2 macrochaetae........................................................................................................5
5 Abd. I with 3 macrochaetae.........................................................................................................................6
- Abd. I with more than 3 macrochaetae......................................................................................................12
6 Tibiotarsi with smooth setae........................................................................................................................7
- Tibiotarsi without smooth setae...................................................................................................................8
7 Th. III with 9 macrochaetae ............................................................................................................ gemellus
- Th. III with 11 macrochaetae ................................................................................................... solomonensis
8 Head with S2 absent .......................................................................................................................nepalensis
- Head with S2 present....................................................................................................................................9
9 Tenent hair clavate.....................................................................................................................................10
- Tenent hair acuminate.................................................................................................................................11
10 Tibiotarsi pigmented ................................................................................................................ inermodentes
- Tibiotarsi unpigmented ...................................................................................................................... indicus
11 All labial setae smooth ..................................................................................................................... javanus
- Some labial setae ciliate and some smooth ................................................................................. salatiganus
12 Abd. I with 4 macrochaetae.......................................................................................................................13
- Abd. I with more than 4 macrochaetae......................................................................................................16
13 Th. III with 9 macrochaetae........................................................................................................................14
- Th. III with 10 macrochaetae.....................................................................................................................15
14 Abd. II with 2 macrochaetae .......................................................................................................... violaceus
- Abd. II with 3 macrochaetae .......................................................................................................... fasciatus
15 Abd. II with 2 macrochaetae ....................................................................................................... janetscheki
- Abd. II with 3 macrochaetae ........................................................................................................... fraternus
16 Abd. I with 5 macrochaetae.......................................................................................................................17
- Abd. I with 6 macrochaetae.......................................................................................................................18
17 Tenent hair clavate ........................................................................................................................... yoshiius
- Tenent hair lanceolate .................................................................................................................... lawrencei
18 Th. II with 10–11 setae..............................................................................................................................19
- Th. II with 13–14 setae ...................................................................................................................... pilosus
19 Abd. II with 2 macrochaetae .............................................................................................................. thaicus
- Abd. II with 3 macrochaetae.......................................................................................................................20
20 Th. III with 10 macrochaetae ........................................................................................................deharvengi
- Th. III with 11 macrochaetae ..........................................................................................................indecisus
21 Dental spines present on both inner and outer margins of dentes ...................................................spinosus
- Dental spines present only on inner margin of dentes................................................................................22
22 Sixth abdominal segment characteristically elongated in mature specimens, its length approaching that of fourth abdominal segment ................................................................................................................ cercifer
- Sixth abdominal segment not particularly elongated, never as long as fifth abdominal segment.............23
23 Abd. I with 2 macrochaetae ........................................................................................................... orientalis
- Abd. I with more than 2 macrochaetae......................................................................................................24
24 Abd. I with 3 macrochaetae.......................................................................................................................25
- Abd. I with more than 3 macrochaetae......................................................................................................27
25 Dental spines arranged in two rows ....................................................................................... problematicus
- Dental spines arranged in a single row......................................................................................................26
26 Unguiculus with inner and outer teeth .......................................................................................... luzonensis
- Unguiculus without tooth ....................................................................................................... wangi sp. nov.
27 Abd. I with 5 macrochaetae.......................................................................................................................28
- Abd. I with 6 macrochaetae ............................................................................................................... gapudi
28 Abd. III with 3 macrochaetae; Abd. IV with 4 macrochaetae ................................................... sundanensis
- Abd. III with 2 macrochaetae; Abd. IV with 6 macrochaetae ............................................................ chenae
description: Published as part of Ma, Yitong & Chen, Jian-Xiu, 2007, A new Dicranocentrus species (Collembola: Entomobryidae) from China with a key to all species in the genus from Asia, pp. 63-68 in Zootaxa 1633 on pages 63-64, DOI: 10.5281/zenodo.179448