Heterolepidoderma jureiense Kisielewski, 1991

Heterolepidoderma jureiense Kisielewski, 1991 View in CoL

Figs 3A–E View Figure 3 , 5A–D View Figure 5

Locality: PT06-09, 11 (Fig. 1).

Examined Material: 37 specimens TL 93–190 Μm; FL 5–15 Μm; AL 14–26 Μm; PhL 27–56 Μm; MD 5–13 Μm; DR

25–50; TSl 5–12 Μm; TSw 2–5 Μm; DC 15–31; VC 5; VTSl 5–17 Μm; VTSw 2–6 Μm; VR 15.

Remarks: Slender, elongated fusiform habitus. Head five-lobed with large trapezoidal cephalion, covering dorsal and partially ventrolateral head, small oval lateral epipleura and elliptical ventrolateral hypopleura, small trapezoidal hypostomium posteriorly adjacent to the mouth. Mouth terminal, wide and short cylindrical pharynx with posterior bulb, and large pharyngo-intestinal junction. Cephalic ciliature consists of dorsolateral tufts inserted between cephalion and epipleura, and ventrolateral tufts inserted in intersection point between cephalion, epipleura and hypopleura, with no particularly longer cilia. Head followed by subtle neck constriction and trunk widens posteriorly. Posterior end bears a short U-shaped furca with a thin long adhesive tube. Anterior dorsal sensory bristle on neck inserted directly on the cuticle and posterior sensory bristles emerge from specialized double-keeled scales. The dorsal surface is covered by narrow keeled scales with a spiny process that exceeds the posterior concave edge of the scale. Dorsal scales are clearly obliquely arranged along the head and neck, and parallel along almost the whole trunk and oblique at the trunk end. One column of ventrolateral scales along the ventral ciliary bands bears a thin lamella. Ventral ciliation consists of two longitudinal bands wider anteriorly, adjoining each other posteriorly to the hypostomium. Interciliary area covered by narrow elliptical keeled scales with spiny process as long as keel insertion base on the scale, except for the naked ventral pharyngeal region. Furcal branch is armed with one pair of wider keeled scales. Present specimens fit the original description within the range of morphological variance and morphometric measurements.

Distribution: Brazil: Rio Verde (SP) ( Kisielewski 1991), and Casa Nova, Abaré, Chorrochó, Paulo Afonso (BA), Delmiro Gouveia (AL) (present study).