Homoloidea
Encyclopedia
Homoloidea is a superfamily of dromiacea
n crab
s. The close relation between Homoloidea and Dromioidea
is primarily established through ultrastructural
characteristics of the sperm
.
Dromiacea
Dromiacea is a group of crabs, ranked as a section. It contains 240 extant and nearly 300 extinct species. Where they are considered to form a monophyletic group, Dromiacea and two other groups of crabs, namely the Raninoida and Cyclodorippoidea, may be collected together into the Podotremata, each...
n crab
Crab
True crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" , or where the reduced abdomen is entirely hidden under the thorax...
s. The close relation between Homoloidea and Dromioidea
Dromioidea
Dromioidea is a superfamily of crabs mostly found in Madagascar. The earliest fossils attributable to the Dromioidea date from the Danian....
is primarily established through ultrastructural
Ultrastructure
Ultrastructure is the detailed structure of a biological specimen, such as a cell, tissue, or organ, that can be observed by electron microscopy...
characteristics of the sperm
Sperm
The term sperm is derived from the Greek word sperma and refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell...
.