Gross morphology and ultrastructure of salivary glands of the mute cicada Karenia caelatata Distant (Hemiptera: Cicadoidea)

► The salivary glands of the cicada Karenia caelatata were examined for the first time. ► The salivary glands consist of a pair of principal glands and a pair of accessory glands. ► Both the principal gland and the accessory gland exhibit significant differences in morphology and ultrastructure. ► The function of the principal glands and the accessory glands is discussed. ► Rod-shaped microorganisms are observed in the salivary glands of K. caelatata for the first time.