▁Kö ppen - Ge iger ▁climate ▁classification ▁system ▁as ▁a ▁hot ▁desert ▁( B Wh ). ▁ ▁See ▁also ▁ ▁List ▁of ▁cities ▁and ▁towns ▁in ▁Egypt ▁ ▁References ▁ ▁Category : Pop ulated ▁places ▁in ▁Dak ah lia ▁Governor ate ▁Category : C ities ▁in ▁Egypt <0x0A> </s> ▁Can ac idae , ▁incorrectly ▁Can ace idae , ▁or ▁beach ▁f lies , ▁sur f ▁or ▁sur ge ▁f lies , ▁is ▁a ▁family ▁of ▁D ip tera . ▁There ▁are ▁ 1 1 3 ▁species ▁in ▁ 1 2 ▁gener a . ▁The ▁family ▁now ▁includes ▁T eth in inae ▁as ▁a ▁sub family . ▁ ▁Family ▁description ▁ ▁For ▁terms ▁see ▁Mor ph ology ▁of ▁D ip tera . ▁ ▁Min ute ▁( 1 . 6 – 5   mm ) ▁yellow , ▁grey ▁or ▁grey - b rown ▁pr u in ose ▁f lies ▁with ▁wh it ish ▁to ▁grey ish ▁mark ings . ▁The ▁head ▁is ▁large ▁with ▁small ▁anten na ▁bearing ▁bare ▁to ▁pub es cent ▁ar ista . ▁The ▁" mouth " ▁is ▁a ▁large ▁o val ▁opening . ▁There ▁are ▁three ▁or ▁four ▁pairs ▁of ▁orb ital ▁br ist les ▁on ▁the ▁head ▁directed ▁out ward ▁( in set ▁ups we pt ). ▁Post vertical ▁br ist les ▁are ▁absent ▁but ▁diver ging ▁pseud op ost oc ell ar ▁br ist les ▁are ▁present . ▁Other ▁head ▁br ist les ▁present ▁are ▁o cell ar ▁br ist les , ▁ 2 - 5 ▁pairs ▁of ▁front