2016) indicated a close relationship between the morphological deformity and the structure of the brain/brains: fusion of pedipalps and chelicerae
were accompanied by the fusion of corresponding ganglia.
After laying her eggs, the female surrounds them with an open mesh of spider silk, and holds them with her chelicerae
with two moderately large promarginal teeth, and five retromarginal teeth, the proximal smaller than the others (Fig.
We also observed protrusions through the skin of the toad's throat which may have been the tarantula's chelicerae
and fangs striking from inside the toad.
of different sizes have been identified in the Atholville exposure, indicating animals ranging in length from about 65 to 170 cm (Miller 2007a).
They possess reduced fixed digits, movable digits similar to a fine needle, and short, fused chelicerae
(Andre, 1981; Kazmierski, 1989; Silva et al.
iranii (A) by its orange-coloured abdomen (both dorsally and ventrally) and by its pale face and dark brown, hairy chelicerae
(versus a black face and smooth black chelicerae
in Olios cf.
In a field experiment, four treatments examined the effects of multiple trophic-level interactions on plant biomass: 1) control treatment of vegetation only, 2) a two trophic-level interaction (grasshoppers and vegetation), and two different three trophic-level interactions: 3) the presence of "predator spiders" to examine consumptive effects, and 4) "risk spiders" with their chelicerae
disarmed with beeswax to examine non-consumptive effects.
only marginally as well as labium and gnathocoxae slightly darker.
The genus is characterized by having: relatively large body (more than 5 mm long); a crown-like mound containing numerous black-tipped tubercles on cephalothorax anterior to the ocularium, coxae I-IV smooth and only with sparse setae; chelicerae
usually normal structured with blackish brown zebra-like stripped pattern, pedipalps short, robust and femora, patella, tibiae covered with numerous black-tipped tubercles (males having microtubercles on ventor of tarsus); legs short or more commonly long (Tsurusaki 1987; Tsurusaki et al.
And a pair of jaw-like fanged projections called chelicerae
folds down against the neck, where a pelican would tuck its beak.
Over the course of 68 of these cage matches, the male with the bigger chelicerae
, heavy, bristling fangs hanging in front of their mouth parts, usually scared the other guy off without a fight.