Key to species 



355 



21. 



22. 



23. 



24 



25. 



26. 



27. 



28. 



29. 

 30. 



31. 



Palps pincer-like, article 3 being long and 

 incurved (Europe) . . . . . 

 '^ Palps otherwise ...... 



(•Palpal article 2 with several processes at pos- 

 J terior margin (Malaya) .... 



^Palpal article 2 otherwise . . . 



(•Palps only slightly salient laterally, articles 2 

 1 and 3 sub-equal ...... 



^ Palps strongly salient at the base of article 2 



/ Trochautal spurs strong ; lateral grooves very 

 J short (Ceylon) ...... 



iTrochantal spurs absent or inconspicuous . 



rScutuni with surface irregular, very coarsely 

 punctate^ (Asia) ...... 



IScutum otherwise ...... 



/-Lateral grooves very short ; palpal article 3 with 



very strong ventral spine (S. America) 

 lOtherwise ........ 



\ 



Hypostome 6 j 6 ; trochantal spurs very slight 



(Formosa, Burma) . . . . . ^ , 



[Hypostome 5 | 5 ; trochantal spurs absent (Japan) japonica (v) 



Basis capituli with ventral cornua ; hypostome 



3 i 3 (N. and S. America) .... 

 Basis capituli without ventral cornua ; hypostome 

 with more teeth ...... 



(Scutum markedly elongate .... 



I „ short-oval ...... 



[Each palp long and narrow (Australia) 



\ „ „ conical, article 2 being broad basally . 



'Lateral grooves very short ; tarsi humped (Mada- 

 gascar) ....... 



Lateral grooves long ; tarsi tapering (Africa, 

 ^ Asia, N. S. Wales) 



' Regarding au atypical form from Malaya which is devoid of coarse punctations, see 

 p. 405. 



- See also H. numidiana, from Algeria, p. 478. 



