20 MONTANA EXPERIMENT STATION BULLETIN 526 



cabins in wooded areas are especially vulnerable to this sort of attack. 

 During the biennium questions concerning control in the above cir- 

 cumstances were answered by this office. 



PSEUDOSCORPIONS AND SOLPUGIDS 

 (Pseudoscorpionida and Solpugida) 



During the course of the biennium numerous questions concerning 

 the identity and possible destructiveness of these animals were ans- 

 wered. Neither one, of course, is harmful but lives on other small 

 arthropods it manages to capture. Likewise neither one has poison 

 glands so a pinch is the worst damage it can inflict to humans. In 

 almost all cases reported, the animals were found in houses. 



COCKROACHES (Orthoptera: Blattidae) 



At least two occurrence records of the brown banded roach are 

 available for Montana. The first record was in Bozeman in 1954. 

 In 1956 specimens from Glendive were submitted for identification. 

 The oriental and German roach are recorded from many places over 

 the state with the exception of the northeast corner. 



CLOVER MITES (Bryobia praetiosa) 



The problem of clover mite migrations into dwellings is still with 

 us in most sections of the state. A new method of control using oils 

 and organic phosphate insecticides promises better results than the 

 phosphate alone since the oil acts as an ovicide and eliminates future 

 population increases. Deer Lodge and Silver Bow counties had ex- 

 ceedingly large populations during 1955-56 but local severe infestations 

 occurred state wide. 



FLATHEAD BORERS (Coleoptera: Buprestidae) 



Two cases of house damage were reported in 1955 from Pondera 

 and Daniels counties. 



ANTS (Hymenoptera: Formicidae) 



Ants as household pests are common over the state and some 

 inquiries concerning identification and control are received each 

 biennium. 



BED BUGS (Cimex lectuhrius) 



In contrast to the last biennuim when a number of cases were 

 reported, only one house in Lewis and Clark County was recorded 

 as infested during 1955-56. 



