Glanapteryginae
| Glanapteryginae | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Trichomycteridae |
| Subfamily: |
Glanapteryginae Myers, 1944 |
| Type genus | |
|
Glanapteryx Myers, 1927 |
|
| Genera | |
Glanapteryx
Listrura
Pygidianops
Typhlobelus
The Glanapteryginae are a subfamily of catfishes (order Siluriformes) of the family Trichomycteridae. It includes four genera, Glanapteryx, Listrura, Pygidianops, and Typhlobelus.
Monophyly of the subfamily is supported by five synapomorphies involving reductions in the fins, caudal skeleton, and laterosensory system. It has been proposed that the sister group to this subfamily is the Sarcoglanidinae.Listrura is the sister group to the remainder of the subfamily. Glanapteryx is sister to a clade formed by the sister taxa Pygidianops and Typhlobelus.
Glanapteryx, Pygidianops, and Typhlobelus are distributed in the Orinoco and Amazon River basins. Listrura species are from Brazil, outside of the Amazon River basin. However, the distribution of glanapterygines may be greater than previously thought.
Most of the subfamily is constituted by 'miniaturized' species. Though miniaturized fish usually refers to fish that do not reach 25.4 mm (1.0 in) standard length, Glanapteryx and Typhlobelus have been considered 'elongated miniatures' due to their paedomorphic features and small head sizes, despite their lengths exceeding an inch.
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