Navicula arenaria Donkin (1861: 10)

Al-Handal, Adil Y., Thomas, Evan W. & Pennesi, Chiara, 2018, Marine benthic diatoms in the newly discovered coral reefs, off Basra coast, Southern Iraq, Phytotaxa 372 (2), pp. 111-152 : 127

Navicula arenaria Donkin (1861: 10) ( Fig. 44 )

References: Krammer & Lange-Bertalot 1986, p. 118, pl. 39, figs 1,2; Desikachary 1989, pl. 640, figs 13,14; Witkowski et al. 2000, p. 267, pl. 116, figs 15–17, pl. 134, figs 8, 9.

Features: Length 54–70 μm, width 9–12 μm, striae 7–8 in 10 μm.

Description: Valves linear lanceolate with acutely rounded apices. Raphe branches straight, ending centrally in simple pores. Axial area narrow, central area transapically dilated. Transapical striae radiate at the center, parallel near the apices.

Ecology and Distribution: Widely distributed marine species. Known previously from the Gulf (Al-Yamani & Saburova 2011). Frequent in Basra corals.

Figures

FIGURES 38–51. Marine benthic diatoms in coral reefs off Basra. Fig. 38. Diploneis gemmatula, Fig. 39. Diploneis nitescens, Fig. 40. Diploneis smithii, Figs 41, 42. Diploneis weissflogii, Fig, 43. Diploneis sp., Fig. 44. Navicula arenaria, Fig. 45. Navicula cancellata, Figs 46–48. Navicula carinifera, Fig. 49. Navicula cf. cincta, Fig. 50. Navicula directa, Fig. 51. Navicula distans.