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 ?
a larger cheliped, dorsal view; b same, ventral view; c smaller cheliped, dorsal view; d same, ventral view; e right second pereopod, lateral view; f same, propodus and dactylus, lateral view.
La ausencia de circulo es un caracter que comparte con Dysmicoccus dactylus, D.
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.
Outer maxillipeds placed nearly longitudinally; merus and ischium fused, a demarcation line sometimes visible between them; palpus three segmented, carpus slightly longer than subtrapezoidal propodus, dactylus articulated disto-medially on ventral margin of subtrapezoidal propodus, overreaching it considerably.
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.
1 A), dactyli each about 1.3 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.
Our focus is on the mandibular palp, the medial rim of the basis of maxilla 1 and maxilliped 1, the propodus and dactylus of the endopod of maxilliped 2, and the dactylus of the endopod of maxilliped 3.