In addition to its tail, "the new animal resembles a spider in having fangs, male pedipalps
, four walking legs and silk-producing spinnerets at its rear.
The study contains a detailed description of a larva of the Eratigena atrica spider, which had a well-developed prosoma and an additional, partly developed head with two segmented pedipalps
and one chelicera with two fangs.
The scorpions captured the prey with the pedipalps
and inoculated venom rapidly, stinging the prey as many times as necessary to subdue it; they ate it later.
Since all parts of its body such as pedipalps
, dorsal surface of mesosoma, legs, lateral and ventral surfaces of metasomal segments, and vesicle densely are covered by hair, it is known as the hairy black scorpion.
In some cases the male pedipalps
and female epigynes were dissected for more detailed study.
foili from Utterbackia imbecillis indicated that these mites would occasionally penetrate the gills of their host using their pedipalps
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.
Morphological terminology follows Chamberlin (1931), with modifications to the nomenclature of the segments of pedipalps
and legs (Harvey, 1992).
Some singular remains: Longest hollow bone 23 mm, longest mandible 17 mm, leg segment of a grasshopper 21 mm; remains of scorpions: stingers up to 9 mm, pedipalps
up to 11 mm.
Category Description Stimulus Context Search Waving pedipalps
Light On tip of leaf Drop Drops from leaf Butyric acid Mammal has surface passed leaf Burrow Embeds head in Heat Has found mammalian skin hairless region of mammal Drink Sucks blood Liquid at Head has appropriate perforated a temperature membrane with liquid on the other side Oviposit Lays eggs Abdomen filled On ground, in with blood dirt Table 2.
Besides limbs and chelicerae, spiders have another pair of appendages situated between them, called pedipalps
, the same as in other arachnids.
Solifugids were omitted from this analysis because they easily escape pitfall traps using the suctorial organs on their pedipalps
(Cushing et al.