COMPLIANCE INFO_1993-1996 - Laserfiche WebLink

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tip. The net is regrasped with the free hand below the clump of captured flies. The entire net tip with flies is inserted into a killing jar and the lid put on loosely (so as not to tear the net fabric) until the flies are immobilized., The specimens are emptied from the net into another killing jar and kept there until dead. While the first catch is being killed, another sample can be taken. The dead flies are put into a labeled box with soft tissue for transport to the laboratory. Flies are collected until the inspector believes that a representative sample has been acquired. Other methods are mentioned in performance standards for capturing adult flies. Experimentation with other methods including bait traps and sticky-fly tapes is being conducted this season, and specific techniques and procedures will be provided at a later time. The first identification step should be to determine if the flies are members of the "domestic" families (Muscidae, Anthomyiidae, C-alhohoroidae, Sarcophagidae, and Drosophilidae). Domestic flies should then be identified at least to genus znd to species where possible. A list of suggested identification keys for domestic dies is arl_-.zhed. Staff of the appropriate district office to the Vector Biology and Controi SE--ton -ie available to keep in the species identification when necessary. CrawlerFlies Crawler flies are newly emerged adult .'—,-s which have not expanded their wings and which run about rapidly when disturbed. The performance standards call for routine "observations" for crawler flies but the extent of the observation is left up to the inspector. A minimum interpretation of this requirement would be that the inspector know what crawler flies look like and be alert to their presence when conducting other inspection activities at the site. In addition, the inspector should determine where fly pupae might occur on a specific site, and view these areas for possible emerging flies at each visit. For example, at a site with an advancing working face, the inspector should observe arms near the lateral edges of where the working face was located dh= to eight days prior to the present in tion. The rationale in this case is that mature larval stages of the flies may have migrated from the uncovered wastes at night to pupate in soil at the lateral edges of the open face. (Flies pupating in front of the open face would be buried by the incoming wastes the next day.) Tf crawler flies are observed, their numbers neer square yard should be counted. Tle fly grill Is a square yard in area, ana can oe user co estimate the required dimensions. in aadition, specimens of the crawler flies should be collected for species identification. 'The recommended killing agent is ethyl acetate. Insects should not be exposed to this chemical any longer than is necessary to kill them, otherwise they will be discolored and difficult to identify. M:WM,217-ZALT=V B-4