Morphology and Histology of the Alimentary Canal of Epiphaneus malachiticus Boheman, 1842 (Coleoptera, Curculionidae)

Structure of the mouthparts and alimentary canal of Eusomus ovulum Germar, 1824 (Coleoptera: Curculionidae)

“…The anterior midgut is wide whereas the posterior one is long and tube-shaped. This is similar to that described for other Coleoptera species (Díaz et al, 1998(Díaz et al, , 2000(Díaz et al, , 2003Rubio et al, 2008;Singh and Prasad, 2013;Candan et al, 2019). The anterior midgut is responsible for allowing a sufficient mixture of digestive enzymes and food.…”

“…Gastric caeca are found on the posterior midgut in E. ovulum. A similar structure was observed to E. malachiticus (Coleoptera, Curculionidae) (Candan et al, 2019). No midgut caeca was observed in A. diaperinus (Coleoptera: Tenebrionidae) and Epilachna chrysomelina Fabr.…”

“…The three parts of the E. ovulum gut (foregut, midgut and hindgut) are easily distinguishable and are similar to those seen in other Coleopterans (Sinha, 1958;Díaz et al, 1998Díaz et al, , 2000Díaz et al, , 2003Rubio et al, 2008;Bu and Chen, 2009;Aldigail et al, 2013;Sarwade and Bhawane, 2013;Singh and Prasad, 2013;Borges et al, 2015;Candan et al, 2019).…”

“…The foregut is responsible for the transport of food to the crop whose function is the temporary storage of food (Díaz et al, 2000;Rubio et al, 2008;Bu and Chen, 2009;Aldigail et al, 2013;Singh and Prasad, 2013;Sousa et al, 2013;Candan et al, 2019). Various authors have illustrated subtle differences among species (Sinha, 1958;Vazquez-Arista et al, 1997;Díaz et al, 1998Díaz et al, , 2000Díaz et al, , 2003Rubio et al, 2008;Bu and Chen, 2009;Aldigail et al, 2013;Sarwade and Bhawane, 2013;Singh and Prasad, 2013;Borges et al, 2015;Candan et al, 2019). The spines observed within the esophageal intima of E. ovulum were similar to those observed in A.diaperinus (Coleoptera: Tenebrionidae), Dendroctonus micans, D. ponderosae, D. pseudotsugae pseudotsugae, D. rufipennis and D. terebrans (Coleoptera: Scolytidae) (McAllister et al, 1995;Díaz et al, 2003).…”

“…In Coleopterans, both the front and posterior part of the digestive canal are characterized by presence of Malpighian tubules; they also occur between the mid-and hind-gut, (Sinha, 1958;McAllister et al, 1995;Díaz et al, 2000Díaz et al, , 2003Rubio et al, 2008;Bu and Chen, 2009;Aldigail et al, 2013;Singh and Prasad, 2013;Candan et al, 2019). In E. ovulum, there are six long tubular Malpighian tubules with smooth surfaces.…”