the wire and upsetting or partially cutting the wire to form a barbed hook which when inserted into terminal hole, inhibits withdrawal. The malformation due to the cutting of the wire by this process can result in the breaking of the wire. It is also known in the art to form the wire tip in serpentine configuration to inhibit lead withdrawal.
Another prior art means comprises the attachment of a preformed barbed connector to the wire tip as by crimping; the barbed connector, when inserted into the terminal hole, similarly inhibits withdrawal. The use of such a connector appreciably adds to the cost of manufacture because of the additional process steps of attaching the connector to the wire, and the cost of the connector itself.
Worth et al in U.S.Review of Hydrometra gracilenta Horváth, 1899 (Hemiptera: Heteroptera: Hydrometridae) in Italy, with notes on its general distribution.
An annotated review of the known Italian distribution of Hydrometra gracilenta Horváth, 1899 is provided, plus unpublished data including a new record which increases the previously known range of the species in Italy. An updated map shows the currently known distribution of the taxon in Italy. An overlooked nomenclatural change is discussed, and the date of description for the genus Hydrometra Lateille is corrected from 1796 to 1797. The presence of H. gracilenta is excluded from Egypt, Sudan, and Rwanda.