THE LEPTOCORISINAE OF THE WORLD 5 



hydroxide solution. It was found easiest to inflate the aedeagus in water just after 

 it was softened. The form of the genitalia was considered to be a reliable character 

 for distinguishing species, as little intergradation was found between its form in two 

 allied species and within a species as many as twenty five examples from widely 

 separated localities were dissected and found to have similar genitalia. Large 

 structures were stained in 1% acid fuchsin in acetic acid and were examined in 

 methyl benzoate, cedarwood oil or creosote. All the drawings were made by using 

 a squared eyepiece under a binocular microscope, from the type specimen when 

 available. Genital structures were preserved in glycerine in small tubes and were 

 pinned with the insects. 



All measurements were taken by using micromillimetre eyepiece graticules. 

 When available, five specimens of each sex were measured and extreme ranges have 

 been given. The length of the head was measured from the apex of the clypeus up 

 to the anterior margin of the collar of the pronotum and the width was taken across 

 the compound eyes including their diameter. Where very large numbers of speci- 

 mens (e.g. L. acuta) were available it could be seen that the measurements of even 

 the exceptional specimens did not lie far outside the ranges obtained by the above 

 method. There is little variation within a species in the size of the parts measured. 



The distributions given for each species are based largely on the material seen by 

 the present author, since there has been so much confusion over the identification of 

 the species in the past. In general, published records have been ignored except 

 those given by the authors who originally described the species. 



ABBREVIATIONS USED IN TEXT-FIGURES 



Ap 



apodeme of the basal plate (pivot) 



Ls 



At 



attaching apodeme of pivot 



Or 



At2 



attachment of second gonocoxa 



P 



Bp 



basal plate 



Pa( 



C 



conjunctiva 





Ca 



conjunctival membrane 



Pal 



CI 



clypeus 





Cm 



connecting apodeme of the aedeagal 



Ph 





strut 



Pr 



Da 



dorsal thecal appendage 



Ps 



Dca 



dorsal conjunctival appendage 



Pt 



Dla 



dorso-lateral conjunctival appendage 



R 



Ex 



exosoma (theca) 



Ra 



F 



fold of the 9th segment 



Rb 



Fa 



front conjunctival appendage 



S 



Fs 



femoral spine 



Sa 



G 



genae 



SI 



Gg 



gonangulum 



SI2 



Gp 



gonapophysis 



St 



Gp2 



second gonapophysis 



Ta 



Gx 



gonocoxa 



Ts 



Ivs 



intervalvular sacs 



Tw 



Ju 



paraclypeae (jugum) 



V 



La 



left lateral conjunctival appendage 



Va 



lateral stapes 

 outer ramus 

 claspers (parameres) 

 PaGpi point of attachment of first gonapo- 

 physis 



point of attachment of the first 

 ramus 



phallosome (theca) 

 process of 9th segment 

 pronotal spine 

 paratergite 

 ramus 



right lateral conjunctival appendage 

 rib of 9th segment 

 stapes 



supporting appendage 

 spine-like appendage 

 second spine-like appendage 

 sternum 



terminal appendage 

 " T " structure 



tubular way to genital chamber 

 vesica 

 ventral thecal appendage 



