Glyptothorax Shangningam & Kosygin 2022

Key to the species of the genus Glyptothorax from the Chindwin drainage

1. Unculiferous ridges of the thoracic adhesive apparatus extending anteriorly onto the gular region........... G. rugimentum

- Unculiferous ridges of the thoracic adhesive apparatus not extending anteriorly onto the gular region.................. 2

2. Thoracic adhesive apparatus with a deep ovoid pit................................................ G. burmanicus

- Thoracic adhesive apparatus without a deep ovoid pit......................................................... 3

3. Thoracic adhesive apparatus almost enclosed posteriorly............................................. G. igniculus

- Thoracic adhesive apparatus opens posteriorly.............................................................. 4

4. Adiposefin base 7.6–10.1 % SL with an elongated pointed posterior tip............................. G. yuensis sp nov

- Adipose-fin base 11.1–18.5 % SL without an elongated pointed posterior tip...................................... 5

5. Nasal barbel not reaching anterior margin of orbit........................................................... 6

- Nasal barbel reaching anterior margin of orbit.............................................................. 7

6. Body depth at dorsal-fin origin 16.2–19.1% SL; adipose length 11.2–14.0%SL........................... G. ngapang

- Body depth at dorsal-fin origin 22.2–22.3%SL; adipose length 15.6–6.3% SL......................... G. chavomensis

7. Body with a mid-ventral line............................................................... G. ventrolineatus

- Body without a mid-ventral line......................................................................... 8

8. Dorsal spine smooth posteriorly; pectoral spine with 6 serrae.......................................... G. minutus

- Dorsal spine serrated posteriorly; pectoral spine with 8–12 serrae............................................... 9

9. Body depth at dorsal-fin base 21.0–26.8% SL; presence of mid-dorsal stripe.......................... G. senapatiensis

- Body depth at dorsal-fin base 18.6–9.7% SL; absence of mid-dorsal stripe................................ G. granulus