Troctopsocoides erwini, Mockford & García Aldrete, 2014

Mockford, Edward L. & García Aldrete, Alfonso N., 2014, A new genus and two new species, one extant and one fossil, in the family Troctopsocidae (Psocodea: ‘ Psocoptera’: Troctomorpha: Amphientometae: Electrentomoidea), Zootaxa 3869 (2), pp. 159-164 : 160-163

Troctopsocoides erwini n.sp. (female)

Color (in 80% ethanol, ca. 12 years). Body pale brown. Compound eyes reddish, ocelli hyaline. Legs brown, with distal ends of femora white, proximal and distal ends of tibiae and of each t1 white, t2’s pale brown, t3’s brown. Forewing ( Fig. 1 ) with many small, brown spots. Hindwings ( Fig. 2 ) slightly shaded.

Structural characters. Sculpture of integument in vertex and frons ( Fig. 5 ) a polygonal net formed by irregular pentagons and hexagons with granulate surfaces. Lacinial tip ( Fig. 3 ) with inner cusp pointed and outer cusp with a subapical, rounded protuberance. Maxillary palpus ( Fig. 4 of segments 2-4): P2 straight, somewhat thickened, P4 bullet-shaped. Pretarsal claws ( Fig. 6 ) each with a large preapical denticle and a minute more basal denticle. Forewing ( Fig. 1 ) broad in middle, tapering beyond a line from distal end of pterostigma to distal end of areola postica to form a slenderer apical region. Rs-M junction in forewing a short crossvein; other aspects of wing venation typical of the family or as described in the generic diagnosis. Subgenital plate ( Fig. 7 ) triangular, rounded apically, with a partial division (segmental?) near base; apex with four stout setae; other marginal setae shorter (non-marginal setae not shown); in middle, two curved lines running lengthwise, basal to T-shaped sclerite and a smaller crescent-shaped line on each side of the long lines; T-shaped sclerite stout with short arms; surface of plate basal to dashed line in Fig. 7 , sculptured with a net of slender, transverse imbrications becoming compressed to longitudinal lines, as illustrated, near base. Ovipositor valvulae ( Fig. 8 ): v1 large, reaching nearly to tip of v2+3; v2 fused with v 3 in basal two-thirds; v3 shallowly bilobed apically. Paraprocts ( Fig. 9 ): semicircular, sensory fields each with four trichobothria and four setae with faintly developed basal rosettes. Epiproct ( Fig. 9 ): triangular, with two macrosetae near apex; setae of paraprocts and epiproct as illustrated.

Measurements (µm). FW: 1273, HW: 1088, F: 208, T: 368, t1: 199, t2: 44, t3: 49, P4: 63, f1: 55, f2: 53, f3: 58, f4: 58, f5: 59, f6: 62, f7: 49, f8: 46, f9: 62, f10: 56, IO: 205, D: 112, d: 75, IO/D: 1.83, PO: 0.66.

Etymology. The species is named for Dr. Terry L. Erwin, leader of the Smithsonian Institution Canopy Fogging Project, in the Río Tambopata Reserved Zone, in which this species, and many others, were collected.

Specimen studied. Holotype female. PERU. Madre de Dios. Río Tambopata Reserved Zone. 30 km (air) SW Puerto Maldonado, elevation 290 m. 12°50’S: 69°17’W. 4.V.1984. T. L. Erwin ˗ et al. (Smithsonian Institution Canopy Fogging Project). Deposited in the Smithsonian Institution Collection, Washington, D. C.

Figures

FIGURES 1–8. Troctopsocoides erwini n. sp. Female. 1. Forewing. 2. Hindwing. 3. Lacinial tip. 4. P2-P4 of maxillary palpus. 5. Sculpture of vertex, parietal region. 6. Pretarsal claw. 7. Subgenital plate. 8. Ovipositor valvulae. Scales in mm.

FIGURES 9–13. Troctopsocoides spp. Structures. 9. T. erwini n. sp. Female, epiproct and right paraproct. Figs 10–13. T. gracilis n. sp. Female. 10. Habitus, dorsal view, legs not shown. 11. Forewing. 12. Hindwing. 13. Subgenital plate. Scales in mm.