A COXSIDERATIOX OF THE lX.SECT POPULATiOX ASSOCIATED 
'WITH Cow Dhxg at Crawley^ W.A. 
22‘3 
¥ : Scarabaeidae 
* Aphodius lividus. Oliv. 
Aphodius insignior, Blkb. 
Aphodius granarius, Linn. 
Aphodius ambiguus, Boh. 
Aphodius sp. 
* Proctophanes sculptus, Hope. 
Ataenius ? integricollis, Lea. 
Onthophagus ferox, Har. 
F : Anfrhicidae 
Anthicus hesperi, King. 
F : Tenebrionidae 
Gonocephalum arenarium, Fab. 
Adelium scytailicum, Base. 
Diptera 
F ; Psychodidae 
* ‘ Psychoda spp. 
F : Sciaridae 
* Sciara spp 
* ? Zygoneura sp. 
F : Scatopsidae 
? llhegmoclema sp. 
F : Mycetophilidae 
? Mycetophila sp. 
F : Tipulidae 
Eriopterinae 
* Unidentified species 
F : Stratiomyidae 
Xeoexaireta spinigera, Wied. 
F : Dolichopodidae 
? A.syndetus sp. 
F : Phoridae 
? Chaetocnemistoptera sp. 
F : Sepsidae 
* Sepsis plebeia, de Meij. 
* Australosepsis fulvescens, Mall. 
* Australosepsis fulvescens var. 
atratula, Mall. 
F : Borboridae 
* I,eptocera spp. 
F : Drosophilidae 
* ? Cladochaeta s]). 
F : Otitidae 
* Chrysomyza aenea, Fab. 
Pogonortalis barbifera, Macq. 
F : Calliphoridae 
Calliphorinae 
Calliphora (Neopolienia) australis, 
Boisd. 
Calliphora (Proeckon) nociva. 
Hardy. 
Lucilia cuprina, Wied. 
Sarcophaglnae 
* Sarcopiiaga (Para.sarcophaga> 
depressa, Desvoidy 
F : Miiscidae 
Muscinae 
* Musca vetustissima, Walker. 
* Musca domestica, Linn. 
Anthomyiinae 
* Hylemyia deceptiva, Mall, or 
near 
* Hylemyia sp. 
Fanniinae 
* V Fannia sp. 
Phaoniinae 
* Helina hypopleiiralis, Mall, or 
near 
* Helina coerulescens, Stein. 
* Helina regina, Mai. or near 
* Rhynchomydaea (Hardyia) 
carinata, Stein or near 
* Muscina stabulans, Meig. 
Lepidoptera 
F : Oecoi)horidae 
* Unidentified spec’es 
Hymenoptera 
F : Alvsiidae 
1 unidentified species 
F : Figitidae 
1 unidentified species 
F3 : Formicidae 
Unidentified species 
6. RELATIONS OF INSECTS TO THEIR ENVIRONMENT AND TO> 
EACH OTHER. 
These may be outlined as follows ; — 
). Those which do not live in the cake itself but use it as food, 
blowflies. Coprine beetles. 
2. Predators on duns: insects with no closer reiationsh’p to the dnng- 
Tho.se iisiially remain on the outside of the cake, cxy., Dolichopo- 
(lids, Creophiius erythrocephalus^ and ants. 
3. Those which live in or on the dung, but subsist on the fungal growths 
which it supports. Probably the minute Collembola frequent- 
ing dung have this habit, although their small size renders 
the elucidation of this point very difficult. 
4. Insects, the larval stages of which live in and feed upon dung 
while the adults have other feeding habits, e.g., some Sarco- 
phagids and probably Neoexaireta spinigera. 
5. Insects which are predatory themselves or have predatory larvae- 
and of which the whole life history is passed within the dung, 
e.g., Oxgtelus, Leptanmis, Cryptobium, Saprinus, and Platysoma. 
Reared from cow dung. 
