Table 2 Core indoor arthropod community and relative over/under representation in various rooms. Included arthropod families were found in at least 20 houses and had spread to at least 4 rooms in a single house. The 11 focal taxa that were analyzed further based on proportional occurrence data are indicated with an asterisk (*). First 3 columns after taxa names indicate the percentage of total houses (max 50), the percentage of total rooms (max 554), and percentage of houses when present in >4 rooms in that house. The last six columns are reflective of whether arthropod families are over/under represented in each room type. To calculate relative over/under representation in room types, we calculated the presence ratio for each arthropod family from the core community in each of the 6 room types, then standardized proportions between families by dividing the presence ratio for each room type by the sum of all room type presence ratios for a given family. If the relative proportion for a given room is >0.167, then it is overrepresented in that room type. Conversely, if the relative proportion is <0.167, it was underrepresented. A ‘U’ denotes that the family is underrepresented by at least half (<0.0835), and an ‘O’ denotes that the family is overrepresented in that room by at least double (>0.334).

From: The Habitats Humans Provide: Factors affecting the diversity and composition of arthropods in houses

Class Order Family houses % rooms % >4% Attic Basement Bathroom Bedroom Common Kitchen
Entognatha (non-insect hexapods) Collembola springtails Entomobryidae slender springtails 78 19.1 18 U      
Insecta (true insects) Zygentoma silverfish Lepismatidae (silverfish)* 68 21.3 30   U     
  Orthoptera grasshoppers, crickets Rhaphidophoridae (camel crickets)* 58 12.8 12 U O U U   U
  Blattodea cockroaches Blattidae (cockroaches)* 74 22.9 28       
  Hemiptera true bugs Cicadellidae (leafhoppers) 82 16.2 16 U U    O  
   Miridae (plant bugs) 44 6.5 2 U U U   O  
  Psocodea barklice, booklice, parasitic lice Liposcelididae (booklice)* 98 37.4 52   U     
  Hymenoptera bees, wasps, ants Braconidae (parasitoid wasps) 52 7.6 2 U U    O  
   Eulophidae (chalcidoid wasps) 70 17 18 U U    O  
   Formicidae (ants) 100 61.9 88       
   Platygastridae s.l. (parasitic wasps) 62 9.4 4 U U    O U
   Pteromalidae (Pteromalid wasps) 52 7.6 2 U U U    O
  Coleoptera beetles Carabidae (ground beetles) 66 9.9 6   O U    U
   Chrysomelidae (leaf beetles) 46 6 2 U U U   O U
   Coccinellidae (ladybugs) 52 7.8 4   U U   O U
   Curculionidae (snout & bark beetles) 82 15.7 16 U     O U
   Dermestidae (carpet beetles)* 100 57 78   U     
   Elateridae (click beetles) 74 14.6 14 U   U   O  
   Ptinidae (death watch & spider beetles) 60 12.1 10 U     O  
   Scarabaeidae (scarab beetles) 52 9.4 6    U    
   Silvanidae (flat bark beetles) 46 6.5 2 U   U   O  
   Staphylinidae (rove beetles) 54 7.2 2 U     O  
   Tenebrionidae (darkling beetles) 62 11.2 12    U   O U
  Lepidoptera moths, butterflies Noctuidae (owlet moths) 44 5.8 2 U     O  
   Pyralidae (snout & pantry moths)* 62 11 8 U U U    O
   Tineidae (clothes moths)* 60 8.8 4 U U    O  
  Diptera flies Calliphoridae (blow flies) 48 8.1 6 U   U   O  
   Cecidomyiidae (gall midges) 100 36.1 50 U U     
   Ceratopogonidae (biting midges) 54 7.6 2 U U    O  
   Chironomidae (non biting midges) 80 17 8 U U    O  
   Culicidae (mosquitoes)* 82 19 18 U U U   O  
   Drosophilidae (fruit flies, vinegar flies)* 66 13.7 10 U U U   O  
   Muscidae (house flies) 44 6.3 2    U   O  
   Mycetophilidae (fungus gnats) 68 16.2 14 U     O U
   Phoridae (scuttle flies) 82 17.3 20 U   U   O  
   Psychodidae (sand & moth flies)* 74 18.8 22 U     O  
   Scatopsidae (minute black scavenger flies) 50 6.9 2 U U    O  
   Sciaridae (dark winged fungus gnats) 96 42.1 60 U      
   Tipulidae (large crane flies) 74 15.9 14 U     O  
Arachnida (arachnids) Araneae spiders Agelenidae (funnel weavers) 46 8.3 2 U O U    
   Gnaphosidae (ground spiders) 48 8.1 2 U     O U
   Lycosidae (wolf spiders) 40 5.8 2    U U O  
   Pholcidae (cellar spiders)* 84 28 38 U      
   Salticidae (jumping spiders) 50 8.3 8 U U U   O  
   Theridiidae (cobweb spiders) 100 65.3 86       
Diplopoda (millipedes) Polydesmida flat-backed millipedes Paradoxosomatidae (millipedes) 58 12.6 14 U O U    
Malacostraca (crustaceans) Isopoda woodlice, pillbugs, roly-polys Armadillidiidae (pillbugs) 78 22 28 U O