NOTULAE ENTOMOLOGICAE - Helda

\v. HACKMAN, ON THE DIPTEROUS FAUNA OF RODENT I5URROWS 125
Table 2. Numbers of specimens and species collected in the three types of burrows
and in baited traps. Abbreviations: Sb = Burrow type 1. moss layer. Patoni
va, Rb = type 2, burrows under roots, sun-exposed. Lb = Norway I^emming
burrows, N slope, f = funnel traps, b = Barber traps with ethylene glycol,
n = number of specimens from all three types of burrows, sp = number of
species. Bti = baited traps, funnel inwards. Bte — baited traps, funnel outwards.
Sb Rb Lb Sb-f Rb-I-Lb Bti Bte Bti-f Bte
b f b f b n sp sp
Trichoceridae 7 15 5 5 5 37 2? 2 6 1?
Psychodidae — — — — — — — — 1 1
Chironomidae 1 10 — 1 n 23 2 — 1 1
Simuliidae — . /, — — — 4 1 — — —
Mycetophilidae 5 10 1 5 12 33 10 — 4 4
Sciaridae 25 20 1 1 26 73 18? 2 1 2
Phoridae 13 4 1 — 4 22 6? — — —
Dryomyzidae — — — — — — — — 5 2
Helomyzidae 1 1 — — 1 3 3 — 57 2
Piophilidae — — — — — — • — — 4 1
Borboridae 23 34 6 7 33 103 8 2 31 6
Diastatidae — 1 — — — 1 1 — — —
Scatophagidae , — — — 2 — 2 1 — —
Muscidae 5 5 1 3 5 19 3 2 3 4
80 104 15 24 97 320 55? 8 112 23?
Nrs. of traps 6 9 1 3 2 1 2
Table 3. Phenological distribution of the material (number of specimens). ICach
month is divided into 4 periods of 7—8 days. The samples from baited traps are
excluded.
Trichoceridae
Chironomidae
Simuliidae
Mycetophilidae
Sciaridae
Phoridae
Helomyzidae
Borljoridae
Diastatidae
Scatophagidae
Muscidae
June
3 4
32
5
1
2
8
26
1
81
3
3
7
1
23
7
10
2
1
28
63 25
July
32
1
2
6
56 17
Aug.
1
1
1
16
1
1
8
30