The pregenital abdomen of Enicocephalomorpha and morphological evidence for different modes of communication at the dawn of heteropteran evolution. Issue 6 (November 2017)

• Record Type: Journal Article
• Authors: Davranoglou, Leonidas-Romanos; Baňař, Petr; Schlepütz, Christian M.; Mortimer, Beth; Taylor, Graham K.
• Is Part Of: Arthropod structure & development. Volume 46:Issue 6(2017:Nov.)
• Page Start: 843
• Page End: 868
• Publication Date: 2017-11
• Subjects: Aenictopecheidae -- Enicocephalidae -- Musculature -- Nervous system -- Scent gland -- Vibrational signaling; Arthropoda -- Morphology -- Periodicals; Arthropoda -- Anatomy -- Periodicals; Arthropoda -- Cytology -- Periodicals; Arthropods -- growth & development -- Periodicals; 595
• DOI: 10.1016/j.asd.2017.08.006
• Languages: English
• ISSNs: 1467-8039

Abstract

Abstract: The internal and external anatomy of the posterior metathoracic region, pregenital abdomen, and associated nervous system of the heteropteran infraorder Enicocephalomorpha are thoroughly described, using an array of state-of-the art techniques. Based on morphology, it is hypothesised which modes of communication these insects use. This study is based primarily on an undescribed species of Cocles Bergroth, 1905 (Enicocephalidae) and another undescribed species of Lomagostus Villiers, 1958 (Aenictopecheidae), but additional representatives of the infraorder are also examined. Our results are compared with the literature on other Heteroptera. The metathoracic scent gland system of Enicocephalomorpha uses the same muscles as that of more derived Heteroptera, although the efferent system is different. The presence of a tergal plate and well-developed longitudinal musculature in the families Enicocephalidae and Aenictopecheidae, as well as a sexually dimorphic set of sclerites and membranes that allow an as yet undetermined type of motion, may indicate the presence of vibrational signaling in the infraorder, although experimental confirmation is required. Our findings raise new research questions regarding heteropteran functional morphology and communication. Highlights: The abdomen of Enicocephalomorpha is the most complex of all Heteroptera. Enicocephalomorpha are capable of unique types of abdominal motion. The metathoracic scent gland system of the infraorder is reconstructed. Vibrational signalling may be present in Enicocephalomorpha.