SEXUAL DIMORPHISM IN THE APERTURAL NOTCH OF A NEW SPECIES OF GEMMULA (GASTROPODA: TURRIDAE) |
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| Authors: | KANTOR YI; SYSOEV AV |
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| Institution: |
A.N. Severtzov Institute of Animal Evolutionary Morphology and Ecology of the USSR, Academy of Sciences Lenin Avenue 33, Moscow 117071, USSR |
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| Abstract: | The presence of a ‘tertiary’ apertural ‘notch’has been recorded in some species of Gemmula (subfamily Turrinae)and in Aforia circinata (Turriculinae). Studies of a large seriesof the new species Gemmula lordhoweensis confirms the presenceof the notch in adult females. The presence of the notch maybe connected with the processes of fertilization or oviposition. (Received 23 March 1990; accepted 25 June 1990) |
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