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TABLE 3 in Deciphering a Chilean harvestmen enigma: what is Parabalta bicornis (Gervais, 1849) comb. nov. (Opiliones: Gonyleptidae: Pachylinae)

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TABLE 3. Match (+M) or mismatch (–m) between fig. 10 (Gervais 1854), and Gervais’ (1849) description of G. bicornis and redescription of G. planiceps; features observable on fig. 4b (lateral view) are inserted in round brackets. Stronger evidence is marked as **. Gonyleptes bicornisGonyleptes planicepsFigs. 10 / (4b)Ocular moundeyes in the outer base of a double spine resembling a pair of straight and acute little horns [intra oculos spina duplice acuta] +M **no ocular tubercle [tuberculo oculifero nullo] –m **two circles meaning two apophyses seen from above / (4b: lateral view shows two spine-like apophyses)DS, general granulationit lacks gemiform tubercles on the dorsum [disco in areas lineolis diviso, vix granulato] +M **‘cephalo-thorax’ full of fine and spaced granules [cephalo-torace granoso] –m **Smooth, no granulation on carapace and areas I–IV / (on fig. 4b too)Lateral areascephalo-torace margine laterali vix granoso +M **bilaterally edged?Lateral areas with no granulation depicted / (on fig. 4b too)Area V and free tergiteshas only some very weak tubercles posteriorly [area V] and on the upper arches of the abdomen [free tergites] +M **no data NAa pair of small tubercles aligned on area V and free tergites / (not shown on fig. 4b)DS, divisionsdorsal ‘disc’ marked by transverse lines [no further detail is given] +M **‘disc’ (scutum) split behind the eyes in 8 rectangles by means of 3 transverse grooves sectioned in the midline by a longitudinal one –monly area I is divided longitudinallyCx IV, armaturehind coxae end posteriorly in an upper, incurved spine, unequally bifid [ad coxas spina postero-laterali subdivisa] +M **coxa of hind legs with a strong single spine [coxis posterioribus spina simplici] –m **(Fig 4b: apophysis on CxIV with two branches, the dorsal larger)TrIV, armaturethe following article [trochanter] has an upper-posterior spine oriented inwards +M **another [spine] also strong, blunt and incurved on the posterior border of the article [position is not clearly described] –mDorso-apical apophysis inclined medially on trochanter IV / (fig. 4b shows the dorso-apical position)FeIV, armaturefemur straight, granulous and with multiple spines: spines are unequal, the strongest one at the base [how many are ‘multiple’?] +Mfemur serrate on its internal and external borders [no strong spine described] –mFeIV bearing large spines on the medial side / (4b: only the base is depicted, with a ventro basal apophysis)Ti IV, armature‘leg’ (tibia) with 3 spines, one close to the base and the remaining two near the tarsal articulation [this feature decisive to assign it to Parabalta] +M **the ‘leg’ (tibia) only [serrate] on the external border –m **tibia with the typical Parabalta shape: sigmoid, one basal apophysis and a group of distal ones / (4b: not shown in lateral view)Colorcolor cinnamon-yellowish, paler on the tarsi. NAbrown body, somewhat reddish, darker in the coxae and mixed with ‘dirty-yellowish’ on legs NAnot shown on figs. 10 or 4b (examined specimens are cinnamon)
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2025-04-05
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