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Articles by Abdul Razaq
Total Records ( 4 ) for Abdul Razaq
  Abdul Razaq , Pear Mohammad , Masaya Shiraishi and Hironori Ono
  The external features of pink citrus rust mite, Aculops pelekassi (Keifer) were observed under scanning electron microscope. The body of this mite was spindle-shaped with a length of 100-150 μm. The propodosoma lines were irregularly arranged and the hysterosoma possessed 30-40 rings. The legs originated from the ventral portion of gnathosoma and extended forward. The first, second and third coxa possessed seta on their surface. Genital organ and a pair of setae were observed bellow the coxal base. The cover flap of the genital organ had 12 muscles on its surface. The tubercle of the flagellate ventral seta was cone-shaped and had a length of 15 μm. The first and second legs were six segmented where the tarsus had a single claw and a branched feathered claw. The gnathosoma was appended under the propodosoma and was extended forwardly. The palpi were segmented and smoothly surfaced. The rostrum was fixed between the palpi and the needle-like stylets were projected from its cavity.
  Abdul Razaq , Toshio Kashiwazaki , Pear Mohammad and Masaya Shiraishi
  Aphis citricola van der Goot was observed under scanning electron microscope. The head, prothorax, mesothorax, metathorax and smoothly surfaced abdomen were clearly recognized. A pair of eyes having several facets occupied the base of the antennae. The posterior part of the eye possessed a projected ocular tubercle. Clypeus and labrum positioned to anterior lower part of the head. The clypeus joint with the labrum at its lower portion as a separated organ. The rostrum originates bellow the labrum and had a length of 310-480 μm. The stylets were projected from the underside of labrum and were inserted into the basal and middle portion of the rostrum. Rostrum had three segments and a suture in the middle region extended up to the apex. A tube-like canal was found at the middle part of the rostrum. The inserted stylets were projected from the apex and diverted in three directions. The middle portion of the stylets was thick and laterals were thin having sharp tips. The stylets were 460-630 μm long and having a diameter of 2.5-3 μm.
  Abdul Razaq , Masaya Shiraishi , Pear Mohammad , Ryoko Tsutsumi and Junko Toda
  The changes in egg of citrus red mite, Panonychus citri (McGregor) Mari: Tetranychidae) during hatching were observed under scanning electron microscope. The egg was jewel-shaped having a diameter of 120-145 pm. The guy ropes and stalk broken down after two weeks of laying eggs. The characteristics of the shell surface gradually changed before hatching. The vertically patterned ridges appeared from the stalk base toward the middle portion of the egg. With the passage of time, the egg surface converted into deep patchy form. The embryo developed and the larva made a pair of hales in the middle region of egg using claws. The inside surface of the shell was smooth. The internal surface was spongy and external surface was patchy type having a thickness of 1 pm. The cleavage appeared on the equatorial portion of the egg and the larva came out. The deposited eggs had sticky wax materials on its ventral side for attachment on the leaf.
  Abdul Razaq , Pear Mohammad , Masaya Shiraishi , Ryoko Tsutsumi and Junko Toda
  The pattern of weaving by guy ropes in association with egg stalk was observed under scanning electron microscope in Panonychus citri (McGregor). The egg stalk was vertical having a base of 15.5 μm wide and its length was 146 μm. Initially few guy ropes extended from the tip of the stalk to the leaf surface of host plant. The ropes rolled up to 125 μm on the stalk tip and were stretched towards the surface. Several thin ropes combined together to form strong strand. The ropes were roughly surfaced and possessed granular materials. The development of new net was accomplished with further extension of thinner ropes, which were twisted over the thicker ones and pasted on the leaf. Mites used adhesive material for the fixation of threads on the leaf as well as for webbing. The thick guy ropes were segregated before sticking on the leaf surface. The surface of the leaf was covered with adhesive, which was invisible. Several ropes overlaps the hatching egg vertically and horizontally.
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