Everything about Tan & Ina

How to tell the difference between male and female hissers:
1. Male has define 'humps' on the anterior part of the pronotum but female does have only slight one.

2. Male has hairs on the feelers particularly, at the base (scape and pedical and maybe to some extent, the flagellum) but female does not have.

3. Male has a narrow ventral plate at the tip of the abdomen but female does not have.

OK, here's my hypothesis on the gender of Tan and Ina.
From my point of view based on my in situ observation in accordance to the above 3 criterias, I expect the larger one is the male because:
a. He matched with the 3rd characteristic, that is the ventral sternum at the tip of the abdomen is narrow.

b. He got some kinda ' humps' on the anterior part of his pronotum.

The smaller is expected to be the female since she didnt fulfill any of the above criteria. Therefore, Tan is the larger one and Ina is the smaller brat. However, since Tan is around 3.3cm and Ina is 2.2cm at present, further observation will be made after the next moult.