Journal:

2010. 18 (1)

Publicatione: 
MORPHOLOGY OF JUVENILE STAGES OF GUSTAVIA MICROCEPHALA (ACARI, ORIBATIDA, GUSTAVIIDAE)

Author:

Ermilov S. G.


About author:

Ermilov S. G., Tyumen State University, Tyumen, Russia

Annotation:

The morphology of juvenile stages of the oribatid mite Gustavia microcephala is described and illustrated. In most aspects all juvenile instars are similar: body broadly oval, with microgranular cerotegument; with distinct continuous ridge between bothridia; sensilli elongate spindle-shaped, with noticeable swelling and flagellate tip. Nymphs are characterized by having very small interlamellar setae. The gastronotal region of nymphs carries reticulate exuvial scalps. Setal formulas of body (larva to tritonymph): genital (0–1–3–5), aggenital (0–0–1–1), anal (0–0–0–2), adanal (0–0–3–3), gastronotic (12–12–12–12) and epimeral (3–1–2, 3–1–2–1, 3–1–2–2, 3–1–3–3). Chelicerae styliform in all instars.

Bibliography:

Abd-el-Hamid, M.E. 1965. Revision von Gustavia mi-
crocephala (Nicolet, 1855) und Bemerkungen zur
Familie Gustaviidae Oudemans, 1900 (Acari, Ori-
batei). Zool. Anz., 175: 418–425.

Grandjean, F. 1953. Essai de classification des Oribates
(Acariens). Bull. Soc. zool. France, 78 (5–6):
421–446.

Grandjean, F. 1957. L’infracapitulum et la manducation
chez les Oribates et d’autres Acariens. Ann. Sci.
nat. Zool. 11: 234–281.

Norton, R.A. and Behan-Pelletier, V.M. 2009. Oribati-
da. Chapter 15. In: G.W. Krantz and D.E. Walter
(eds.). A Manual of Acarology. Texas Tech Univ.
Press, Lubbock: 430–564.

Pérez-Iñigo, C. 1970. Acaros oribátidos de suelos de
España Peninsular e Islas Baleares (Acari, Oriba-
tei). Parte II. Eos, Rev. Esp. Entomol., 45:
241–317.

Subías, L.S. 2004. Listado sistematico, sinonimico y
biogeografico de los acaros oribatidos (Acari-
formes, Oribatida) del mundo (1758–2002).
Graellsia, 60. Numero extraordinario: 3–305. Lis-
tado sistematico, sinonimico y biogeografico de
los acaros oribatidos (Acariformes, Oribatida) del
mundo (excepto fosiles). Actualizado en abril de
2009. http://www.ucm.es/info/zoo/Artropodos/
Catalogo.pdf

Weigmann, G. 2006. Hornmilben (Oribatida). Die Tier-
welt Deutschlands. 76. Goecke and Evers, Keltern:
520 ss.