Subfamily Tychiinae Dana, 1851

Criocarcinus superciliosus [from A. Milne Edwards 1872: pl. 12 fig. 3]

Museums

Regional Maps

• Tychiidae Dana, J.D. 1851. On the classification of the maioid Crustacea or Oxyrhyncha. American Journal of Science and Arts 2 11: 425-434 [431].
• Criocarcininae Dana, J.D. 1851. On the classification of the maioid Crustacea or Oxyrhyncha. American Journal of Science and Arts 2 11: 425-434 [431].
• Picrocerinae Neumann, R. 1878. Systematische Uebersicht der Gattungen der Oxyrhynchen: Catalog der podophthalmen Crustaceen des Heidelberger Museums. Beschreibung einiger neuer Arten. Leipzig. 39 pp. [12].
• Ophthalmiinae Balss, H. 1929. Expedition S. M. Schiff Pola in das Rote Meer. Nördliche und südliche Hälfte 1895/96–1897/98. Zool Ergebn, 36. Decapoden des Roten Meeres, 4. Oxyrhyncha und Schlussbetrachtungen. Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Klasse 102: 1-30 figs 1-9 pl. 1 [6].
• Othoninae Dana, J.D. 1851. On the classification of the maioid Crustacea or Oxyrhyncha. American Journal of Science and Arts 2 11: 425-434 [430].

Introduction

As Griffin & Tranter (1986: 61) elegantly remarked: `tychines are majids with extravagant orbits'. In their review of the Majidae, Griffin & Tranter (1986) restricted this subfamily to three Indo-west Pacific genera only, and provided a key for their descrimination.

Diagnosis

Body elongate; often with a median spine or protuberance; somewhat truncate anteriorly. Eyestalks long, retractile. Eyes without true orbits, but orbit usually extravagantly expanded above, and partially protected by a long horn-like supra-orbital spine; postorbital spine either lacking, or small and remote from eye; intercalated spine not present. Basal antennal article not extremely slender, always fused distally; merus of third maxilliped as wide as ischium. Male abdomen not terminally broadened, seventh segment subtriangular and not inserted deeply into sixth segment. Male first gonopod generally slender, weakly curved, sometimes adjacent about a third from base, apices outcurved (lyrate), aperture terminal or subterminal with at most poorly developed flaps or lobes. (After Griffin & Tranter 1986).

General References

Griffin, D.J.G. & Tranter, H. 1986. The Decapoda Brachyura of the Siboga Expedition. Part VIII. Majidae. Siboga Expéditie Monographie 39(c4): 1-335, 112 text-figs 22 pls

History of changes