Discorinopsis aguayoi ( Bermúdez, 1935 )

Camacho, S, Moura, D, Connor, S, Scott, DB & Boski, T, 2015, Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal), Palaeontologia Electronica 52 (4), pp. 1-37 : 22-23

Discorinopsis aguayoi ( Bermúdez, 1935)

Figure 3.26-3.29

1935 Discorbis aguayoi Bermúdez : p. 204, pl. 15, figs. 10-14.

1948b Discorinopsis vadescens Cushman and Brönnimann : p. 20, pl. 4, figs. 9, 10.

1953 Discorinopsis aguayoi (Bermúdez) ; Parker, Phleger and Pierson, p. 7, pl. 4, figs. 23, 24.

1957 Discorbis? aguayoi Bermúdez ; Todd and Brönnimann: pl. 9, fig. 24.

1963 Trichohyalus aguayoi (Bermúdez) ; Bermúdez and Seiglie, p. 176, pl. 26, fig. 4.

1971 Discorinopsis aguayoi (Bermúdez) ; Bock, p. 50, pl. 18, fig. 42.

1979 Discorinopsis aguayoi (Bermúdez) ; Scott, Piper and Panagos, p. 257, pl. 16, figs. 1, 2.

1998b Discorinopsis aguayoi (Bermúdez) ; Debenay, Eichler, Duleba, Bonetti and Eichler-Coelho, p. 80, pl. IV, figs. 24, 25.

2003 Discorinopsis aguayoi (Bermúdez) ; Javaux and Scott, p. 14, figs. 6.1, 6.2.

Morphological description. Test with low trochospiral coil, with about five chambers in the first whorl; the increased height of the spire results in an auriculate test, spiral side strongly convex, umbilical side flattened to concave with broad umbilicus; sutures strongly curved in spiral side, nearly radial on the umbilical side; wall agglutinated of calcareous particles.

Occurrence. Species of narrow distribution, occurring with J. macrescens and T. inflata in significant abundances (11.9%) during winter. In the living assemblage, its occurrence seems limited to confined sites of the lower estuary (LG and E1), at low to middle elevations where vegetation occurs.

Remarks. In Guadiana environments D. aguayoi is epiphytic, found strongly attached to vegetal structures.

Figures

FIGURE 3. Scanning electron and light microscope micrographs of the foraminifera specimens. Scale bar equals 100 µm except where noted otherwhise; 1-2- Jadammina macrescens (Brady, 1870); 1- supplementary apertures view; 2- detail of supplementary apertures (scale bar = 50 µm); 3-4- Lepidodeuterammina plymouthensis Brönnimann and Whittaker, 1990; 3- dorsal view; 4- ventral view; 5-8- Lepidodeuterammina ochracea (Williamson, 1858); 5- dorsal view; 6- ventral view; 7- dorsal view of a smaller specimen; 8- ventral view of a smaller specimen; 9-10- Portatrochammina sp.; 9- dorsal view; 10- ventral view; 11-13- Siphotrochammina sp.; 11- dorsal side with inter-cameral foramen view; 12- dorsal view of a smaller specimen, also with inter-cameral foramen; 13- ventral view of a smaller specimen; 14-16- Tiphotrocha comprimata Saunders, 1957; 14- dorsal view; 15- ventral view; 16- individual strongly attached to a sea-grass leaf; detail of a Pinus pollen grain at the center of the leaf; 17-21- Trochammina inflata (Montagu, 1808); 17- dorsal view; 18- ventral view; 19- ventral view with umbilical tube detail; 20- microspheric form dorsal view; 21- microspheric form ventral view; 22- Eggerelloides scaber (Williamson, 1858); 23-25- Textularia earlandi Parker, 1952; 23- apertural view; 24- lateral view; 25- profile view with aperture in detail; 26-29- Discorinopsis aguayoi (Bermúdez, 1935); 26- scanning electron dorsal view; 27- scanning electron ventral view; 28- light microscope dorsal view; 29- light microscope ventral view.