autapomorphy

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autapomorphy

(ô-tăp′ə-môr′fē)
n. pl. autapomor·phies
An evolved character or trait that is unique to a single species or group within a larger phylogenetic group. Speech is an autapomorphy of humans among primates.

au·tap′o·mor′phic adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
The monophyly of the Limnocorinae (Limnocoris lutzi) is characterized by three autapomorphies: (8-3), (37-2), and (39-1).
The autapomorphies of the genus are a robust bifurcate process situated at the middle lobe of the pronotum and ah extremely short labium; a potential synapomorphy with Centromus Bergroth, 1910 is a strongly protruding, bill-shaped ovipositor.
In addition, we propose a new subgenus for Natalina wesseliana which represents a distinct and basally divergent lineage within Natalina, and which exhibits several anatomical autapomorphies that set it apart from the remaining species.
Osteology and myology of the cephalic region and pectoral girdle of Plotosus lineatus, with comments on Plotosidae (Teleostei: Siluriformes) autapomorphies. J.
Autapomorphies for the different taxa examined were actively searched for and included in the analysis.
Palp I II III IV Tarsi 2.65 2.42 2.60 2.61 3.38 Metatarsi -- 3.92 3.77 4.43 6.84 Tibiae 3.54 4.77 3.86 3.08 5.39 Patellae 3.24 4.47 3.86 3.40 3.81 Femora 5.18 6.45 5.73 5.26 6.89 Table 4.--Synapomorphies and autapomorphies for the cladogram presented in Fig.
As shown in Figure 4A, the presence of a helical acrosome (#1) at the top of an elongated nucleus (more than 20 [micro]m long, #5), of mitochondria helically coiled around the main nuclear portion (#7), and of a complex anchoring apparatus (#10) are autapomorphies for the siboglinid spermatozoon.