Résumé:
In the Southeast of the Algerian Sahara (Touggourt), a morphological study of Brachytrupes
megacephalus was conducted during 2014. According to the damages caused by this cricket through deviation
and loss of irrigation water due to deep tunnels dug and damage crops, we found it useful to identify the insect
and study the external appearance of this cricket. The results show that B. megacephalus has an annual life
cycle with five nymph stages. The mating season is placed normally from mid-March to mid-April. The eggs
are with an ovoid shape and a greenish color measured by 3.5 to 4 mm, First nymph stage is with a transparent
colors which has a pronotum measured between 1.5 and 2.2 mm with a head between 3 and 4,6 mm and the femur
has a length of 5 to 6 mm. Unlike the other nymph stages are yellow-orange with a darker head than the rest of
the body. The adults of this cricket have a pronotum of 5 to 6 mm, the head is between 13 to 14 mm and the
femur is from 17 to 22 mm. All these post-embryonic development mature throughout the summer until
September, during which the cricket becomes imago.
