23 Kas 2024 Cumartesi
Significance of epiphallus in some Indian species of Acrididae (Orthoptera: Acridoidea)
Abstract :A comparative study of epiphallus is made in sixty Indian species of
grasshoppers, representing forty one genera belonging to the family Acrididae.
Its significance in the classification of Acrididae is shown. The study
revealed that there are certain characters i.e. presence or absence of
dorso-lateral appendages; broad or narrow condition of bridge; presence or
absence of ancorae; single, bi or trilobite condition of lophi and shape of
ancorae and lophi have significant value in separating various families, genera
and species of Acridoidea. Absence of dorso-lateral appendages in the family
Acrididae is taken as familial character which is present in all genera of the
family Pyrgomorphidae. Presence or absence of ancorae and single, bi- or
trilobite condition of lophi are considered as generic characters. Bridge
without ancorae, lophi large lobiform in Anacridium,
Cyrtacanthacris and Schistocerca;
bridge with ancorae, lophi large lobiform in Heteracris and Navasia; bridge with ancorae, lophi small in
Oxyrrhepes and Tristria; bridge with ancorae, lophi finger shaped in Tristria and Xenocatantops; bridge with ancorae, lophi bilobate in Dnopherula, Acrotylus, Neohelithera, Locusta and Truxalis; bridge with ancorae, lophi lobiform in Aiolopus, bridge with ancorae, lophi
trilobite in Ochrilidia. Broad or
narrow condition of bridge, Shape of ancorae and lophi is suggested as specific
character in separating various species within the genera Anacridium, Catantops, Heteracris, Oxya, Dnopherula, Hieroglyphus,
Eucoptacra, Truxalis, Trilopidia, Oedaleus, Acrotylus, Aiolopus, Catantops and Xenocatantops
Significance, epiphallus,Indian
species, Acrididae