dactylus


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dactylus

[′dak·tə·ləs]
(invertebrate zoology)
The structure of the tarsus of certain insects which follows the first joint; usually consists of one or more joints.
References in periodicals archive ?
Chelipeds and ambulatory legs robust, compressed; chelipeds shorter than pereiopods 2-4; hand short, wide, and nearly quadrate, dactylus wider than pollex and strongly curved.
P catenatum is distinguished by the fur-lined chelae present in males and the oblique-shaped ridge on the upper margin of the dactylus.
dactylus Miller & McKenzie 2'--Poros multiloculares dorsales ausentes 3 3--Poros translucidos presentes en las coxas D.
For maxilliped 3, both the dactylus and propodus were removed from the endopod.
2, I-M) Not chelate; 1st pereiopod of 4 spines in basal endite; 3 strong and two weak spines in dactylus of 1st pereiopod; general shape unchanged from 2nd pereiopod through 5th pereiopod.
Where known, the females construct tubes or galleries by secreting sticky mucus from the tip of the dactylus of the first pereopods, which glues sediment particles together (Krasnow & Taghon 1997).
The cheliped (and in fact all the legs) comprise seven segments, coxa, basis, ischium, merus, carpus, propodus and dactylus in that order, not four as stated.
dactylus posee ademas de los conductos dorsales, poros multiloculares dorsales, esto la diferencia rapidamente de todas las especies de la region.
3 times as long as propodi, with 5 longitudinal rows of spines diminishing in size proximally, arrangement of spines on dactylus of left third pereopod as follows: anterolateral row with 5 spines, anteroventral row with 6 spines, external row with 5 spines plus 2 proximal papillae, posteroventral and posterolateral rows with 3 spines.
2A, C), the similar morphology of pereiopods 3-5 but the distinctly different dactylus of pereiopod 2, the well developed suture on both uropods, and other characters of the genus (see Goy and Provenzano 1979; Alvarez et al.