pygidium

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py·gid·i·um

(pī-jĭd′ē-əm)

n. pl. py·gid·i·a (-ē-ə)

The posterior body region or segment of certain invertebrates.

[New Latin, from Greek pugidion, diminutive of pugē, buttocks.]

py·gid′i·al (-ē-əl) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pygidium

(paɪˈdʒɪdɪəm; -ˈɡɪd-)

n, pl -ia (-ɪə)

(Zoology) the terminal segment, division, or other structure in certain annelids, arthropods, and other invertebrates

[C19: from New Latin, from Greek pugē rump]

pyˈgidial adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

py•gid•i•um

(paɪˈdʒɪd i əm)

n., pl. -gid•i•a (-ˈdʒɪd i ə)

any of various structures or regions at the caudal end of the body in certain invertebrates.

[1840–50; < Greek pȳg(ḗ) rump + -idium]

py•gid′i•al, adj.

References in periodicals archive ?

After removing the implant from each individual, we measured body length (from the clypeus to the tip of the pygidium) with a digital caliper ([+ or -] 0.1 mm).

Almacenamiento energetico, tamano corporal y respuesta inmune de escarabajos herbivoros a dos distintas elevaciones en Costa Rica

None of these trilobites was properly described or illustrated except a single pygidium which was illustrated from the Mazraeh-e-Kheradmand section and assigned to Omegops accipitrinus accipitrinus; however, this identification looks problematic.

The latest Devonian (Famennian) phacopid trilobite Omegops from eastern Alborz, Iran

Total length (carapace + opisthosoma including pygidium) 3.45.

New morphological data for the order Ricinulei with the description of two new species of Pseudocellus (Arachnida: Ricinulei: Ricinoididae) from Mexico

Pygidium of slide-mounted female, with diagnostic characters; ao-anal opening, pl-pygidial lobe.

Armored scales (Hemiptera: Diaspididae) infesting Hass avocado intercepted in Florida and a new parasitoid-host association for Davidsonaspis aguacatae

websteri exhibit a high degree of morphological plasticity in the palp pigmentation pattern, the shape of the anterior edge of the prostomium, the shape of the major spines on chaetiger 5, and the shape of the pygidium. The COI gene sequence demonstrated that the intraspecific distance of P.

Morphological and Molecular Characterization of Polydora websteri (Annelida: Spionidae), with Remarks on Relationship of Adult Worms and Larvae using Mitochondrial COI Gene as a Molecular Marker

Pygidium with anus surrounded by several terminal lobes and with two large ventral cirri (Figs.

A new species of polychaete worm from Juan Fernandez Archipelago, Chile, Scoloplos juanfernandezensis n. sp. (Polychaeta: Orbiniidae)

Elytra ovoidelongate, weakly convex, widest in basal 1/3; humeri convex; base with convex borders; subparallel in basal V2, in apical 1/4 abruptly narrowed towards apex and jointly rounded apically, about 1.8 times as long as pronotum; elytral punctures round, large and dense, arranged in regular striae; distance between strial punctures convex, very narrow, about 4.05.0 times smaller than diameter of puncture; striae distinct throughout entire length of elytra; intervals very narrow (as distance between strial punctures) and convex; pygidium not exposed.

Los primeros registros de gorgojos (Coleoptera: Curculionidae) del cuaternario colombiano copal

Pygidium with two developed lobes with cilia located on the dorso-central part of the anus.

A new species of Protodrilus (Annelida, Protodrilidae), covering bone surfaces bright red, in whale-fall ecosystems in the northwest Pacific

Pygidium small, rounded, with one pair of very short ventral knobs [16].

Assay of distribution meiobenthic Streblospiogynobranchiata (Polychaeta) in the sediments of the South Caspian Sea (Mazandaran province)

Later, their total length was measured from the tip prostomium to the end of pygidium using calibrated ocular micrometer under stereomicroscope and also the number of segments was counted.

Ecological significance of the association between Stomopneustes variolaris (Echinoidea) and Lumbrineris latreilli (Polychaeta) from Visakhapatnam Coast, India

Adult specimen length was measured from the tip of the clypeal horns to the apex of the pygidium. Specimen width represents the maximum width of the elytra, at the level of the humeral callus.

Eudicella trimeni Janson, 1884 (Coleoptera: Scarabaeidae: Cetoniinae: Goliathini): description of larva with notes on conservation status, biology and taxonomy

Para la confirmacion de la especie se tomo en cuenta el pygidium (Figura 3c) el cual presento el dorso esclerotizado en un patron reticulado, con un par de lobulos medios redondeados bien separados y un par de setas marginales entre ellos.

Insectos fitofagos asociados a Ficus benjamina L. y a F. microcarpa L. (Urticales: moraceae) en Lima, Peru