Male flies carrying Dp(1;2)51bV76e show wing-notching and lateral incisions, leg defects and tarsal reductions, missing or multiple bristles, missing or fused ocelli and variegated or roughened eyes, at varying frequencies.

N^264-103/N^nd-3 females survive when raised at 22^oC but die at 29^oC. One or several temperature sensitive periods (TSPs) for lethality occur during the embryonic, larval and prepupal-pupal stages (either a single TSP for lethality begins in the embryos stage and lasts into the pupal stage or there are several discrete TSPs). N^264-103/N^spl-1 flies show wing nicking and tarsal segment fusion phenotypes and also show the N^spl-1 eye phenotype. The mutant eye and wing phenotypes are more strongly expressed at high temperatures than low temperatures, and tarsal fusion only occurs at high temperatures. At 20-22^oC, the eyes approach wild type but usually contain small, irregularly positioned areas of facet disarray, while at 28-29^oC the facet disarray extends over the whole surface of the eye. The temperature sensitive periods of these phenotypes occur during the third larval instar stage.