Timnewia amazonense, Silva-Neto & García Aldrete & Barroso & Rafael, 2021

Silva-Neto, Alberto Moreira Da, García Aldrete, Alfonso N., Barroso, Karen De Araújo & Rafael, José Albertino, 2021, Timnewia García Aldrete (Psocodea: ‘ Psocoptera’: Ptiloneuridae): new species and variation in the wing venation of T. jeaneae Silva-Neto, García Aldrete & Rafael, Zootaxa 4950 (3), pp. 571-579 : 572-575

Timnewia amazonense n. sp. Male

( Figs 1–15 )

Diagnosis. Closer to T. greeni in pattern of hypandrium, from which it differs by having the central piece of the hypandrium straight anteriorly, by having the posterior lateral projections slightly wider than in T. greeni and also by bearing the lateral sclerites with different format (compare Figs 9 and 26 ), by having the arms of the side struts wide, anteriorly fused, pointed, mesal sclerite with two pointed processes anteriorly, posteriorly without processes, with border irregular, and by having four distinct pairs of endophallic sclerites (compare Figs 10 , 27 and 28 ).

Color. Compound eyes black, ocelli hyaline, with ochre centripetal crescents; head pattern ( Fig. 2 ). Scape and pedicel brown, with proximal ends dark brown, f1 white, f2 with proximal ends brown, rest white; Mx1-Mx3 pale brown, Mx4 yellow with distal end brown. Femora yellow; tibiae yellow with distal end brown, tarsomeres 1–3 yellow. Forewings ( Figs. 1 , 3, 4 ) almost hyaline, with a marginal, irregular, pale brown band from R 2+3 to Cu1a; pterostigma with several small dark spots, areola postica with a small dark brown spot proximally, a small brown spot at confluence of CuP–1A; a small dark spot above the proximal part of A 1; veins dark brown. Hindwings almost hyaline with small dark brown spots distally on veins R4+5, M and Cu2; three small dark spots on its proximal part; veins brown ( Figs 1 , 7 ).

Morphology. Head vertex concave in the middle, slightly above the level of the upper border of the compound eyes, these without interommatidial setae ( Fig. 2 ). Outer cusp of lacinial tips broad, with eight small denticles ( Fig. 8 ). Forewing pterostigma strongly angulate, projected in the middle towards Rs, bearing a spur-vein; Rs slightly convex, R 2+3 convex proximally, then straight, R 4+5 sinuous, M four-branched, concave proximally, then straight, M 1 almost straight, M 2 -M 3 sinuous, M4 concave. Areola postica tall, wide basally, slightly slanted posteriorly, apically rounded. 2A joining 1A. One crossvein between 2A and wing margin and two cross-veins between 1A and wing margin in right forewing ( Figs 3, 5 ); two cross-veins between 2A and wing margin, with one of them as a spur vein and one crossvein between 1A and wing margin in left forewing ( Figs 4, 6 , see also variation of the paratype forewings below). Hindwing Rs straight, R 2+3 straight, R 4+5 almost straight, M sinuous ( Fig. 7 ). Hypandrium of three sclerites; central one stout, straight anteriorly, posteriorly with a blunt median projection, weakly sclerotized, with rounded apex; lateral projections elongate, distally acuminate; lateral sclerites long, rhomboid, with both ends acuminate, setae as illustrated ( Fig. 9 ). Phallosome ( Fig. 10 ), side struts stout, basally fused and narrow, widening distally, with almost triangular apex, not fused posteriorly to external parameres, the latter transverse, proximally narrow, widening distally, with a field of pores in the middle. Mesal sclerite wide transversely, strongly sclerotized ( Fig. 10 ). Four pairs of endophallic sclerites, an anterior pair small, almost elliptic, located between the side struts and the mesal sclerite; a lateral pair, stout, elongated, sinuous, anteriorly lance-shaped, posteriorly widening, with almost rectangular apices; a postero-mesal pair, stout, almost elliptic, wide anteriorly, narrowing posteriorly; a posterior pair, small, wide anteriorly, narrowing posteriorly, slightly curved outward. Epiproct wide, anteriorly convex, sides converging to round posterior border; a long seta mesally near each side, other setae as illustrated ( Fig. 11 ). Paraprocts broad, almost triangular, sensory fields with 27 trichobothria on basal rosettes, setae as illustrated ( Fig. 11 ).

Measurements (in microns): FW: 4552, HW: 3226, F: 1319, T: 2295, t1: 965, t2: 115, t3: 158, f1: 1145, f2: 526, Mx4: 361, IO: 553, D: 503, d: 384, PO: 0.76.

Material examined. Holotype male (INPA). BRAZIL. Amazonas. Reserva Reserva Biológica do Cueiras , km 14, Torre. 02°35′21″S: 60°06′55″W. 13–31.III.2018. Malaise trap, 24 m from ground level. J.A. Rafael. 1 male paratype (MNRJ). Same data as the holotype, except 25.XI– 08.XII.2017.

Etymology. Amazonense is a noun applied to the natives of the Brazilian state of Amazonas. By extension, it is given to this species as a noun in apposition, making reference to the Brazilian state of origin of this species.

Variation in the forewing veins of the paratype. Right forewing with two crossveins between 2A and wing margin, one of them a spur vein, and two crossveins between 1A and wing margin ( Figs 12, 13 ). Left forewing as right forewing of the holotype, but with crossvein between 2A and wing margin, arising slightly further from the fusion zone between A2 and A1.

Figures

FIGURE 1. Timnewia amazonense n. sp. (Holotype male). Lateral view. Scale in mm.

FIGURES 2–7. Timnewia amazonense n. sp. (Holotype male). 2. Front view of head. 3. Right forewing. 4. Left forewing. 5. Zoom of the basal part of the right forewing. 6. Zoom of the basal part of the left forewing. 7. Hindwing. Scales in mm.

FIGURES 8–11. Timnewia amazonense n. sp. (Holotype male). 8. Lacinial tip. 9. Hypandrium. 10. Phallosome. 11. Clunium, right paraproct and epiproct. Scales in mm.

FIGURES 12–15. Timnewia amazonense n. sp. (Paratype male). 12. Right forewing. 13. Zoom of the basal part of the right forewing. 14. Left forewing. 15. Zoom of the basal part of the left forewing. Scales in mm.

FIGURES 24–28. Timnewia greeni (Holotype). 24. Forewing. 25. Zoom of the pterostigma. 26. Hypandrium. 27. Phallosome. 28. Figure of phallosome adapted from New (1972). Scales in mm.