Typhlachirus caecus

(Hardenberg 1931) Hardenberg 1931



Cryptops coeca   Hardenberg 1931

Hardenberg (1931) originally intended to name this species Cryptops coeca and provide the following as his first text on the matter:

72. Cryptops coeca Nov. spec: 1).
III. E. 571 2 specimens, IV. G. 253 3 specimens
1) A description of this new species will be published in a short time.
From this species, which is very strongly adapted to live in the mud (no eyes, tentacles on the finrays, etc.) I found only 5 specimens in total from two different places on the central bank.

The name is therefore a nomen nudum having no description. In any case the name was unavailable as it was already preoccupied in Cryptops Leach 1815:384 (Chilopoda), Cryptops Schönherr 1823:1138 (Coleoptera), Cryptops Solier 1851:235  (Coleoptera) and Cryptops Eigenmann 1894:626 (Pisces). In the same volume of the Journal (Treubia, Buitenzorg), but 290 pages later, he provided the description and also the following revealing note:

"First I proposed to give this genus the name Cryptops but Prof. C. L. Hubbs, Michigan, was so kind to inform me that this name was preoccupied. He suggested me to use the name Typhlachirus instead" (Hardenberg 1931)

A diagnosis of the genus Typhlachirus was not provided until Hardenberg (DATE).


Indonesia: marine


An in-depth study of the fishes in the genus Typhlachirus is being carried out by Evseenko,S., Bolshakov,D., Bolshakova,Y., Kopylov-Guskov,Y. and Gordeeva,N. of the Laboratory of Population Genetics, Vavilov Institute of General Genetics, Moscow. Its title is: Taxonomic status of three nominal species of blind soles of the genus Typhlachirus Hardenberg (Family Soleidae) and it has been running since February 2021. See the Genbank entry for details of the work already carried out and Evseenko and Bolshakov (2018) for morphology and taxonomy of the genus.

Conservation Status


Munroe, T.A. 2021. Typhlachirus caecus. The IUCN Red List of Threatened Species 2021: e.T158881003A158881669. Downloaded on 31 October 2021.

Key References

Karoli, J. Book 1882 Prodromus piscium Asiae orientalis a domine Joanne Xantus annis 1868–70 collectorum
Hardenberg, J.D.F. Journal Article 1931 Some new or rare fishes of the Indo-Australian Archipelago
Hardenberg, J.D.F. Journal Article 1931 The fish fauna of the Rokan mouth
Hardenberg, J.D.F. Journal Article 1935 Some new or rare fishes of the Indo-Australian archipelago IV
Chabanaud, P. Journal Article 1939 Catalogue systématique et chorologique des Téléostéens dyssymétriques du Globe
Pellegrin J. and Chevey P. Journal Article 1940 Poissons nouveaux ou rares de Cochinchine. Description de deux espèces et de deux variétés
Chabanaud, P. Journal Article 1948 Morphologie et systematique des Soliedes affectes d’une atrophie plus ou moins complète de l’oeil migrateur
Desoutter, M., Munroe, T.A. and Chapleau, F. Journal Article 2001 Nomenclatural status of Brachirus Swainson, Synaptura Cantor and Euryglossa Kaup (Soleidae, Pleuronectiformes)
Lapierre, K.-L. Thesis 2007 Taxonomic Revision of the Genera Achiroides, Brachirus, Dexillus, and Paradicula (Pleuronectiformes: Soleidae)
Chanet B. and Desoutter-Meniger, M. Journal Article 2008 French-English glossary of terms found in Chabanaud’s published works on Pleuronectiformes
Abidin, M. and Bintoro, A. Journal Article 2014 Hubungan panjang berat ikan lidah (Typhlachirus caecus) di perairan estuari Sungai Indragiri, Riau
Evseenko, S.A. and Bolshakov, D.V. Journal Article 2018 On the morphology of Mekong blind sole Typhlachirus elongatus (Soleidae) with notes on the taxonomy of the genus Typhlachirus
Atta, C.J. Thesis 2020 An exploration of speciation and genome-wide uncertainty in flatfishes based on exon-capture data
Tan, H.H. and Grinang, J. Journal Article 2021 Typhlachirus lipophthalmus, a rare eye-less sole from Borneo (Teleostei: Soleidae)
Herlan, H. Conference Paper 20?? Distribusi ukuran, hubungan panjang-berat dan faktor kondisi ikan lidah (Typhlochirus caecus) di perairan estuari sungai indragiri, Riau