| 31. | The headshield ( or cephalon ) is almost entirely effaced and wider than the tailshield ( or pygidium ).
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| 32. | It was characterized by an unusual net-like pattern of furrows on both the cephalon and the pygidium.
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| 33. | A pygidium is present in Palpigradi, Amblypygi, Thelyphonida, Schizomida, Ricinulei and in the extinct order Trigonotarbida.
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| 34. | The pygidium is subquadrate, has a flat border, that is sometimes posteriorly widened and has a weak bifurcation.
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| 35. | Its major characteristics are lack of eyes, two lobes on the glabella, and three lobes on the pygidium.
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| 36. | The posterior end of the axial lobe of the pygidium also widens significantly, another distinct characteristic of the species.
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| 37. | The pygidium is well rounded, semicircular or shorter, with an entire margin, and without lateral and posterior projections.
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| 38. | Both the pygidium and the cephalon are ornamented with small pits ( scrobicules ) and wrinkles, extending mostly inwards from the margins.
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| 39. | Its pygidium is small, with 2 anal cirri, similar to its dorsal cirri but rather longer, plus a median papilla.
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| 40. | Its pygidium is small and bilobed, with 2 long anal cirri, which are longer than the animal's median antenna.
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