Coecobrya

Nilsai, Areeruk, Jantarit, Sopark, Satasook, Chutamas & Zhang, Feng, 2017, Three new species of Coecobrya (Collembola: Entomobryidae) from caves in the Thai Peninsula, Zootaxa 4286 (2), pp. 187-202 : 200

Key to the Thai species of Coecobrya

*Cave-dwelling species

1. Antennae more than 2.5 times as long as the cephalic diagonal..................................................2

- Antennae less than 2.5 times as long as the cephalic diagonal...................................................5

2. Unguis without unpaired inner teeth........................................... C. cavicta Nilsai & Zhang sp. nov. *

- Unguis with unpaired inner tooth.........................................................................3

3. Labial chaetae as mRel1l2; Abd. IV with 7+7 central mac................... C. chumphonensis Zhang & Nilsai sp. nov. *

- Labial chaetae as M 1m 2rel1l2; Abd. IV with 6+6 central mac....................................................4

4. Postlabial chaeta X4 ciliate; mac a1 present on Abd. I.......................... C. polychaeta Zhang & Nilsai sp. nov. *

- Postlabial chaeta X4 smooth; mac a1 absent on Abd. I....................... C. cf. polychaeta Zhang & Nilsai sp. nov. *

5. Abd. IV with more than 4+4 central mac...................................................................6

- Abd. IV with 3+3 or 4+4 central mac...................................................................... 7

6. Abd. III with 1+1 central mac...................................................... C. cf. hoefti ( Schäffer, 1896)

- Abd. III with 2+2 central mac........................................... C. lanna Zhang, Deharveng & Chen, 2009

7. Abd. I with 4+4 central mac; Abd. II with 2+2 central mac............................... C. similis Deharveng, 1990 *

- Abd. I with 5+5 central mac; Abd. II with 3+3 central mac........................... C. guanophila Deharveng, 1990 * We thank Louis Deharveng for providing partial molecular data and suggestions for this work. Thanks should be given to Department of National Parks, Wildlife and Plant Conservation Thailand for permission to conduct field research, Thale Ban National Park chief Jarun Khunnarong, and Nong Plak Phraya and Khao Raya Bangsa Non Hunting Area chief Yutthana Satjakul for their permission and support, Rueangrit Promdam for his generous fieldwork assistance. This work was supported by the Science Achievement Scholarship of Thailand (SAST), the Faculty of Science Research Fund Year 2015 and Graduate school granted to A. Nilsai, Prince of Songkla University (PSU-SCI580885S) and Thailand Research Fund (TRG5880189) granted to S. Jantarit as well as the Fundamental Research Funds for the Central Universities (KYZ201617) granted to F. Zhang.