A smashed one!
The distinguishing feature of a brown spider with a black head is the contrast between the brown body and the black head.
The distinguishing feature of a spider with a black head and brown body is its unique coloration, which sets it apart from other spiders.
A black widow. This spider is only a black widow if the entire spider is black, with a round-ball looking back-body, female variety if there is a red hourglass shape marking on the underside of the spider. From the top black widows are completely black.
The spider you are describing sounds like a spiny-backed orb-weaver spider (Gasteracantha cancriformis). This spider is known for its distinct coloration, with a black head and legs and a gray body with spikes or spines. It is relatively small in size and can be found in shrubs and trees, where it builds its orb-shaped webs.
A Black Widow spider has two main body parts: the cephalothorax (head and thorax combined) and the abdomen.
It can be hard to tell what kind of a spider you are looking at that has a red head and back and black and white striped legs, since the body type is also an important factor. Chances are that it is a red-headed jumping spider, which can cause a somewhat painful bite but is not otherwise dangerous to humans.
The black hairy jumping spider has a black dot on it's head, and large green fangs. This spider is a beneficial spider, that keeps other insects at bay.
The male green jumping spider has a dark red head and a bright green body. The scientific name for this spider is Mopsus Mormon.
A Woodlouse Spider!
A ladybird spider is a spider whose red body has four black dots.Specifically, the spider in question can be found natively in Greece. It carries the scientific names Eresus cinnaberinus and E. sandaliatus. It has white-striped black legs. Its fused head and thorax (prosoma) is black. Its abdomen-like rear (opisthosoma) is red, with 4 black dots.
The spider you are describing sounds like a common household spider known as the "brown widow." Brown widow spiders have a distinct color pattern with a brown abdomen, brown legs, and a black head. Their appearance can resemble a fly due to the coloration of their body segments.
head legs eyes