How to distinguish two confusing species of sand gazelles: Gazella leptoceros cf Gazella marica

True gazelles, of the genus Gazella, are bewilderingly speciose in North Africa and Arabia.

Each species is individually variable; several of the species have local subspecies; photographers tend to focus on males.

As a result, identification from photos - particularly in the case of females - can be difficult even for naturalists with plenty of experience with ungulates.

In the case of two psammophilous species of gazelles inhabiting the desert dunes, the confusion is aggravated by the indiscriminate use of similar common names derived from the Arabic.

'Rhim' refers to Gazella leptoceros of the Sahara (see while 'rheem' refers to Gazella marica of Arabia (see The two seem to be mislabelled interchangeably on the internet, even when the specimens are in zoos.

The name 'slender-horned gazelle' for G. leptoceros hardly helps, because both species have long, slender, somewhat asymmetrical horns in most females. And this species is mislabelled even in professional publications (see cover photo of, which is Gazella leptoceros, but incorrectly called Gazella cuvieri).

The following are distinguishing features.

All species of true gazelles are more or less fawn with whitish ventral parts separated from the fawn by a relatively dark flank-band.

However, in the slender-horned gazelle (Gazella leptoceros), the fawn on the body, neck and legs is the most uniform of any species of true gazelle (see and and

By contrast, in the sand gazelle (Gazella marica) it is clearly differentiated into a pale upper flank-band, a pale lower-haunch, and pale legs (see

A difference too subtle to see in most photos is on the feet, which

  • in the slender-horned gazelle are - at least in some individuals - marked with small-scale dark/pale contrasts near the hooves (see, and
  • in the sand gazelle are pale like its legs - although technically the furred rim of the pasterns (adjacent to the hooves) can likewise be dark in some individuals.

All true gazelles share a certain detailed pattern on the face.


In adults of both sexes, but particularly males, the whole face tends to be conspicuously bleached (see and, forming a facial flag.

This is accompanied, in adult males, by a darkening around the eye (see that is not seen in the slender-horned gazelle.

Posted on Σεπτέμβριος 20, 2020 1221 ΠΜ by milewski milewski


Δεν υπάρχουν ακόμα σχόλια

Προσθήκη σχόλιου

Συνδεθείτε ή Εγγραφή για να προσθέσετε σχόλια