Schendylops cyclareatus ( Attems, 1947 ), 2020

Fonseca, Régia Mayane Pacheco, Akkari, Nesrine & Chagas-Jr, Amazonas, 2020, On the identity of the centipede Sogona cyclareata Attems, 1947 (Geophilomorpha, Geophilidae), Zootaxa 4852 (5), pp. 571-577 : 572

Schendylops cyclareatus ( Attems, 1947) comb. nov.

Figures 1–3

Sogona cyclareata Attems, 1947 (53, Pl. 3, Figs 14–16).

Type material examined. Sogona cyclareata: NHMW 436 as described above.

Redescription. Color: (fixed material) yellow body, dark brown forcipular claw.

Cephalic plate ( Fig. 1A ): longer than wide ( 1.1 mm long). Cephalic plate with convex margins, anterior margin rounded; posterior border straight. Cephalic plate with few bristles.

Antennae ( Fig. 1A ): 2.4 times longer than the cephalic plate; length; width ratio of the first, second and third a.a., respectively: 0.20 mm x 0.30 mm; 0.28 mm x 0.26 mm; 0.29 mm x 0.22 mm. Length: width ratio of the ultimate antennal article: 0.23 mm x 0.13 mm.

Clypeus ( Fig. 1B ): Clypeal area densely areolate with 1+1 bristles.

Labrum ( Figs 1B , D–E): not divided into median and lateral portions, continuous with the clypeus, with 15 short and triangular median denticles, and 5+5 pointed triangular lateral teeth.

Mandible ( Fig. 1D ): with pectinate lamella.

Maxilla I ( Fig. 1F ): with coxosternite not covered by the second maxilla, with several short bristles; coxal projections with subtriangular shape, and with bristles. Distal article of the first maxilla with rounded tip and long bristles.

Maxilla II ( Figs 1 F–G): with well-developed coxosternite, bristles arranged mainly in the median region. Bristles present in the articles I, II and III. Claw with filaments and slightly curved.

Forcipular segment ( Fig. 1C ): coxosternum with 1.30 mm maximum width, and with anterior margin of concave surface without denticles.

Forcipules ( Fig. 1C ): telopodite: trochanteroprefemur with smooth edges without teeth. Femur and tibia without denticles. Forcipular claw without basal denticle, smooth and strongly curved.

Sternites ( Figs 2 A–C): Sternite 2 to penultimate with pores; on segments 2–18 round to oval, then dividing into 2 round pore fields, which gradually become smaller and again merge into a round field on the last 6 segments. Sternite sparsely setose. Sternite of ultimate leg bearing segment wide, trapezoidal with straight posterior margin.

Tergites ( Fig. 2D ): with two, and pre-tergites with one, row of very small bristles, terga with two furrows, preterga not grooved, both smooth. Tergite of the last leg-bearing segment broad, with rounded posterior margin.

Ultimate leg-bearing segment ( Figs 3A , B): Coxal pores open in two pits. Ultimate legs long and thin (mainly the tarsi), with several bristles, but without a claw; length of ultimate legs with 1.9 mm.

Figures

FIGURE 1. Sogona cyclareata Attems, 1947, NHMW436, syntype. A. Cephalic plate and antennae (Scale bar 1.0 mm). B. Clypeus (Scale bar 0.1 mm). C. Forcipular segment, ventral view. (Scale bar 0.1 mm). D. Labrum and mandibles (Scale bar 0.01 mm). E. A linedrawing of the labrum (Scale bar 0.05 mm). F. Maxillae I and II (Scale bar 0.1 mm). G. A linedrawing of the maxillae II (Scale bar 0.1 mm).

FIGURE 2. Sogona cyclareata Attems, 1947, NHMW436, syntype.A. Sternite 1 to 3 (Scale bar 0.2 mm). B. Detail of the pore fields (Scale bar 0.1 mm). C. Sternites with pore fields (Scale bar 0.5 mm). D. Tergites (Scale bar 1.0 mm).

FIGURE 3. Sogona cyclareata Attems, 1947, NHMW436, syntype. A. Penultimate and ultimate leg bearing segments, dorsal view (Scale bar 0.2 mm). B. Penultimate and ultimate leg bearing segments, ventral view (Scale bar 0.1 mm).