HOMQPTERA (Continued) 



EETEROPTERA* ** *** 



S-pecies 



Chromo some Number 



2n n Remarks Observer 



References 



Belostomatidae 

 Belostoma flumineum 



Berracus griseus 



Lethocerus america.nus 



24s 

 28 s 



13$(1) X-Yo" 

 12?(11) 



(1) 

 (11) 



4(1) X-y£ 



mn) 



Chickering'27 J.M. 44. 

 Chickering'27 J.M. 44. 



Chickering J.M. 44; A.R. 37; 

 •27 a,b, »32 Pap. Michigan 

 Acad. Sci. 15. 



Chickering & Pap. Michigan 

 Bacorn '33 Acad. Sci. 17. 



L. uhler 



30 s 



*In the H»teroptera the sex chromosomes segregate post-reductionally in the 2nd division 

 in the most cases. 



**Cunha Marques, Alberto Xavier da. 1945: Cariologia comparada de alguns Hemipteros 



heteropteros (Pentatomideos e Coreideos) . Mem. Estud. Mus. Zool. Univ. Coimbra 163; 1-105. 



(Not accessible), 



'Ekblom, T. 1941. 

 chenopodii Fall. 

 (Not accessible) , 



***Ekblom, T. 1941. Chromo somenuntersuchungen bei Snlda littoralis I. , Callocorig 

 chenopodii Fall., und Mesovelia furcata Muls. & Rey. etc. Chromosona 2: 12-35- 



-125- 



