Xun Hui, Yang Ming, Wu Hui, Chen Han-Bin
Department of Biology, Guiyang Medical College, Guiyang 550004, China.
Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi. 2011 Apr 30;29(2):104-6.
The histology of alimentary canal of Simulium (Wilhelmia) xingyiense mature larva (with gill spots) was investigated by using paraffin serial section. The alimentary canal is composed of foregut, midgut and hindgut. The foregut includes pharynx, esophagus and proventriculus. The up-inside of buccal cavity invaginates to form the labral gland with irregular shape. Ossified cibarium exist in anterior pharynx. Canular proventriculus forms by the invagination of esophagus. The midgut begins with four big gastric caeca, and divides into three regions according to the epithelium cell shape. The hindgut consists of pylorus, ileum and rectal. The structure of the ileum is different from rectal. Four malpighian tubules diverge from the boundary between midgut and hindgut. The structure of silk duct is special
采用石蜡连续切片法对兴义蚋（威廉蚋亚属）成熟幼虫（具鳃斑）的消化道组织学进行了研究。消化道由前肠、中肠和后肠组成。前肠包括咽、食管和前胃。口腔内侧内陷形成形状不规则的唇腺。前咽有骨质化的下咽。食管内陷形成管状前胃。中肠起始于四个大的胃盲囊，并根据上皮细胞形状分为三个区域。后肠由幽门、回肠和直肠组成。回肠的结构与直肠不同。四根马氏管从中肠和后肠的交界处发出。丝管的结构特殊。
