
TY  - JOUR
A1  - White, MJD 
T1  - Karyotypes and Meiosis of the Morabine Grasshoppers III* The Genus Hastella
JF  - Australian Journal of Zoology
JO  - Aust. J. Zool.
Y1  - 1981
VL  - 29
IS  - 3
SP  - 461
EP  - 470
KW  - 
UR  - https://doi.org/10.1071/ZO9810461 
N2  - The six species of this genus all have the primitive moiabine karotype (2n male = 17, male XO) modified as a result of two dissociations (numbered D9 and D10) that have fragmented the original AB and CD metacentric chromosomes into acrocentrics A,B, C and D. This has produced a 2n male = 21 karyotype in four of the species. In the two remaining species (H. spinipinnis and H. longirostris), which have a somewhat more westerly distribution in northern Australia. a fusion (F20) between two of the small chromosomes is present; this has reduced the chromosome number to 2n males = 19. All the species are XO in the male sex. From the limited material available, five of the species appear to be chromosomally monomorphic, but the rather widespread H. obtusipinnis is polymorphic for several structural chromosome rearrangements. 
ER  -

