Abstract
Adparaproba gabrieli Carvalho is a phytophagous neotropical bug with a restricted distribution to southeast Brazil. The histology of the digestive system and that of the male and female reproductive tracts of A. gabrieli was studied. We found that the male had a pair of testes with two follicles per testis, two short vasa defentia that joined in a muscular ejaculatory duct with two pairs of well-developed accessory glands. The female has a meroistic telotrophic ovary with three ovarioles per ovary. There is a pair of sac-like salivary glands. The digestive tract, after the pharynx, has a long, thin oesophagus ending in a muscular proventriculus. The transition fore-midgut is marked by a stomodeal valve, and the midgut is the main organ with an anterior portion with columnar cells and an posterior one with flattened cells. The hindgut is short and differentiated in the ileum and rectum. The Malpighian tubules are also described and the phytophagous feeding habit of A. gabrieli is discussed.
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