160 MORPHOLOGY AND TAXONOMY OF ADULT MALES 



Keys to Genera and Species 

 Key to the EU LECAN I UM Group of Genera 

 i Head with anterodorsal bulge somewhat pronounced ; fleshy prosternal setae 

 present ; fleshy anterior metasternal setae 11-18 (average 14) ; abdominal seg- 

 ment VIII with a large, cylindrical caudal extension ; fleshy pleural setae present 

 on posterior abdominal segments and fleshy ventral setae present on abdominal 

 segments II and sometimes III ; abdominal segments VI and VII usually with 

 4 and 2 setae respectively ; basal rod if— 2 times as long as aedeagus. 



SPHAEROLECANIUM (S. prunastri (Fonsc.)) 

 Head with anterodorsal bulge not pronounced ; fleshy prosternal setae absent ; 

 fleshy anterior metasternal setae absent ; abdominal segment VIII with a small 

 convex caudal extension ; fleshy abdominal setae absent ; abdominal segments 

 VI and VII with either 4 or 2 setae on both segments ; basal rod shorter or as 

 long as aedeagus ............ 2 



2 Head (in lateral view) rounded ; ventral sclerite near mouth opening present ; 



fleshy setae very short and thick, being less than 060 times as long as width of 3rd 

 antennal segment and shorter than width of hind tibia ; 10th antennal segment 

 with 4-6 (average 5) capitate subapical setae ..... Genus A 



Head (in lateral view) dorsoventrally elongated ; ventral sclerite absent ; fleshy 

 setae medium-sized or long, being 0-67-5-00 times as long as width of 3rd antennal 

 segment, and as long, to 5 times as long as width of tibia ; 10th antennal segment 

 with 2 or 3 capitate subapical setae ........ 3 



3 Third antennal segment more than 4 times (range 4-6-6-3, average 5-3) longer than 



wide ; fleshy setae very long, 4-5 times as long as width of 3rd antennal segment 

 and tibia ; sternites on abdominal segment II absent ; abdominal segment II 

 with one hair-like seta on each side . . . ERICERUS (E. pela (Chav.)) 



- Third antennal segment less than 4 times (range 1-8-3-6) longer than wide ; fleshy 

 setae medium-sized, less than twice as long as width of 3rd antennal segment and 

 tibia ; sternite(s) on abdominal segment II present ; abdominal segment II with 

 2 medially situated hair-like setae ........ 4 



4 Median crest not polygonally reticulated ; scutellum tubular ; with more than 6 



hair-like scutal setae ........... 5 



Median crest polygonally reticulated ; scutellum not tubular ; with less than 5 



hair-like scutal setae ........... 6 



5 With 8 simple eyes ; with 1-4 (average 2.2) dorsal ocular setae ; with small 



circular pores behind pronotal sclerites, around metatergal setae, on abdominal 

 segment I and in the ante-anal region ; suspensorial sclerite spot-like ; fore 

 wings 2-36-2-56 (average 2-46) times longer than wide, with 1-2 (average i-i) 

 alar setae on each side ; hind tarsus 5-6-7-0 (average 6-3) times longer than wide; 

 without a separate median tergite between abdominal segments I and II ; setae 

 of glandular pouch with external part 3-4 times as long as the section within the 

 pouch ; lateral sclerotizations of penial sheath narrowly joined anterior to anus ; 

 length of basal rod § to equal that of aedeagus, basal rod not reaching apex of 

 basal membranous area; aedeagus short, the basisternum being 1-74-1-92 



(average 1 -85) times longer CTENOCHITON (C. sp.) 



With 10 simple eyes ; with no dorsal ocular setae ; circular pores absent ; suspen- 

 sorial sclerite elongate ; fore wings 2-04-2-25 (average 2-09) times longer than 

 wide, with no alar setae ; hind tarsus 5-1-5-3 (average 5-2) times longer than 

 wide ; with a separate median tergite between abdominal segments I and II ; 

 setae of glandular pouch with external part about twice as long as the section 

 within the pouch ; lateral sclerotizations of penial sheath not joined anterior to 

 anus ; basal rod less than half as long as aedeagus, reaching apex of basal mem- 

 branous area ; aedeagus long, the basisternum being only 1 -23-1 39 (average 

 1-34) times longer ...... FILIPPIA {F. viburni (Sign.)) 



