During a trip to Morocco in early April 1999, exuviae were collected at the stream Tamrhakht, 50 km NE of Agadir (31 °N, 10°W. alt. 350 m approx.), which is situated in the western foothills of the Haul Atlas. The banks of the stream were covered with shrub and palm-trees. The velocity was 30 – 100 cm s ', depending on the width of the bed, which varied between 10 and 20m. Due to low precipitation that spring, the water depth was between a few cm and 40 cm. The bed consisted of sand, gravel and boulder. There was no aquatic vegetation. The small collection (8-IV-1999) contained four exuviae: one Oxygastra curtisii, one Onychogomphus uncatus and two Gomphus simillimus maroccanus Lieftinck. Additionally, some mature O. uncatus males were observed perching at the stream. For O. curtisii this is the fourth record from Morocco and the first one of an exuviae. The previous observations are from the Rif mountains (H.J. DUMONT, 1972, Bull. Soc. Sc. nat. phys. Maroc 52: 149-179; G. JACQUEMIN, 1994, Odonatologica 23: 217-237) and from a locality near Rabat (MA. LIEFTINCK, 1966, Bull. Inst. r. Sci. nat. Belg. 42: 1-63) which is about 500 km NE of our site. Apparently, this is the southernmost record of O. curtisii. O. uncatus is well known from the Haut Atlas and also from the southern side of the range, but not from the vicinity of the Atlantic Ocean (G. Jacquemin, pers. comm.). G. simillimus maroccanus, in contrast, was already known from the Agadir region (P. AGUESSE & J.P. PRUJA, 1958, Bull. Soc. Sc. nat. phys. Maroc 37; 149-160).

Notulae odonatologicae

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Societas Internationalis Odonatologica

D. Hilfert-Rüppell, G. Rüppell, & F. Suhling. (1999). Onychogomphus uncatus (Charp.) and Oxygastra curitisii (Dale) in southern Morocco in April (Anisoptera: Gomphidae, Corduliidae). Notulae odonatologicae, 5(4), 50–50.