Histological structure of the mouthparts, clypeo-cibarial system, and cephalic foregut in Philoliche rondani (Diptera, Tabanidae, Pangoniinae)

Autor:	A. A. Panov
Rok vydání:	2008
Předmět:	Labrum Philoliche rondani Insect Science Clypeus Proboscis food and beverages Nectar Foregut Anatomy Pangoniinae Biology Arthropod mouthparts
Zdroj:	Entomological Review. 88:764-777
ISSN:	1555-6689 0013-8738
DOI:	10.1134/s0013873808070026
Popis:	The leading factor responsible for the evolution of Philoliche rondani mouthparts, as well as those of the other long-proboscid Pangoniinae, appears to be adaptation to the intake of nectar from concealed sources (flowers with elongated floral tube). Adaptations to blood-sucking, inherent only in females, have morphogenetic and behavioral aspects. Philoliche rondani males, as compared to males of Tabanus-like species, have better developed clypeus, labrum, and labium. The presence of a long proboscis has led to transformation of the labial musculature and complication of the food canal structure. During the intake of nectar, the distalmost portion of this canal is formed only by the labium. The lateral labial folds form a peculiar closing apparatus. The cibarial and pharyngeal pumps of Philoliche rondani are similar to those of other tabanids investigated.
Databáze:	OpenAIRE
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