Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 59. (Budapest 1967)

Mihály, F.: Seasonal distribution of the synanthropic flies in Hungary

Stomoxys calcitrans L. Lives mainly in stalls on blood of cows, but occasionally causes some inconvinience also to man. Not being attracted to traps, no abundance graph can be drawn of this very common domestic fly. Some species of the Anthomyiinae develop in human faeces and owing to their great numbers they can be significant as infection carriers. Pegomyia socia FALL. The number caught on faeces was insufficent to plot a graph, but it was reared abundantly from excrement (5.7%). The species inhabits forests. Paregle cinerella FALL. The leading species on baits of faeces in villages (29.1%). It has many generations (Fig. 15), the most numerous one appearing in September. Of the Sepsidae, two species are common on human faeces. Nemopoda nitidula FALL. The first and most abundant generation flies in May (Fig. 16). The number in specimens of the further generations is less and less. It was this Sepsid to be reared from faeces in the greatest number (13.3%). Sepsis punctum FABR. Has several generations, the maximum appearing in August (Fig. 17). Caught in smaller number than the former species (1.3%); and reared in 2.0% only. Of the Sphaeroceridae, named by M. P. ARADI (1965), the most common species was: Chaetopodella scutellaris HAL. Caught on faeces from July till September (Table 9). A typically a communicative synanthropic species. Scatophaga stercoraria L. is the most common species of the family Cordyluridae. Most numerous in April and August (Fig. 18). Of the Piophilidae developing in meat, the most numerous species was : Piophila varipes MEIG. Its abundance curve has strong peaks in May and July (Fig. 19). In the following, I give in half-month groupings, the number of synanthropic flies caught in traps. Of the netted material, I give the Újpest food-market collectings only, when the hours were also noted. The absolut numbers must be devided by the number of trap-hours to arrive at the density of the species. Number of trap-hours in 1959—65 IV V VI VII VIII IX X 121212 12121212 Faeces Meat Fruit 4 14 13 17 14 19 17 22 10 14 11 12 4 15 13 17 13 15 16 31 8 12 8 18 ---- - 5 5 13 4 38 25 4 6 7 6 4 4 5