Corythobrachidae

## Taxonomy

Polypodia

Sarcopodia

Neopoda

Osteopoda

Polyschia

Platydontia

Edaphotheria

Leptopoda

Thylacopoda

Allobrachidae

Euallobrachidae

**Corythobrachidae**

**Corythobrachidae** (lit. "crested arms") are a clade of Allobrachidae native to temperate steppes.

## Description

In a textbook instance of Fisherian runaway, Corythobrachids have dramatic sexual dimorphism: while females look largely like other Allobrachids, the males have large, brightly colored crests on their arms and cephalothorax for courtship displays. Beyond their role in mating, these crests handicap the male, both by impeding his feeding and making him more visible to predators. However, as protandrous hermaphrodites, unsuccessful males may change their sex to female, losing their colorful integument in the process.

One clade of Corythobrachids has derived into the Camarabrachids.

## Navigation

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								- *unspecified*
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												* *Anthonomos qbelocki*†
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										+ *Pycnothrix dicksoni*†
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											- **Corythobrachidae**†
												* Archecorythobrachidae†
												* Camarabrachidae†
													+ *Cyanolophus mcgyveri*†
											- Archeallobrachidae†
												* Archeallobrachinae†
													+ *Melanothrix oneiropolos*†
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											- *polylophodon thomasi*
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														- Teleopsidae
														- Chelaphora
															* Stenochelaphora
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												* File:StenopsidaeEvo.pngArchestenopsidae
												* Neostenopsidae
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					- Megalobrachidae†
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								- Euprocerapoda†
									* *Megaphagus matti*†
								- Stylopoda†
									* *Hybotitan bluenoti*†
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									* *Nanopus proximensis*†
									* Eubaropodidae†
								- Pachypoda†
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								- *Euoplos gulielmi*†
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								- *Telmarchos krisi*†
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										+ *Eurypus geberi*†
									* Thalattotheria†
										+ Isopterygia†
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											- *Pontodrakon nicholsi*†

* **Chemophyta**
	+ Archaeophyta
	+ Xenophyta
		- Caulophyta
			* Neocaulophyta
				+ Eucaulophyta
					- Eucaulophytaceae
						* Eucaulophytoideae
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					- Reptophyta
				+ Brachyphyta
					- Archebrachyphyta
						* Eubrachyphyta
							+ Eubrachyphytaceae
							+ Desmophyta
								- Carnophyta†
								- Chromatophyta
									* Archechromatophyta
										+ Archechromatophytacea
										+ Aphyllophyta
									* Zygophyta
										+ Zygophytacea
											- Zygodendrales
											- Archezygophytacea
										+ Harpactophyta†
						* Tylophyta
					- Cryptophyta
						* Eucryptophyta
						* Pagophyta
			* Necrophyta
		- Xylophyta
			* Euxylophyta
				+ Archexylophyta
					- Archexylophytacaea
					- Coelophyta
				+ Nodophyta
			* Altiphyta†
				+ *Trilobophyllus axidenti*†

 † = Extinct