Steleops thorntoni, Obando, Ranulfo González, García, Alfonso N. & Carrejo, Nancy Soraya, 2011

Obando, Ranulfo González, García, Alfonso N. & Carrejo, Nancy Soraya, 2011, New species of Steleops (Psocodea: ‘ Psocoptera’: Psocidae) from Brazil, Colombia, Mexico and Peru, Zootaxa 3139, pp. 28-54 : 52-53

Steleops thorntoni n. sp. (Female)

( Figs. 71−75 )

Color (in 80% alcohol). Body pale brown. Compound eyes black, ocelli hyaline, with ochre centripetal crescents. Head pattern ( Fig. 73 ) with two ochre diagonal bands from each compound eye, enclosing the antennal fossae, forming a Y on the lower postclypeus, anteclypeus and labrum. Postclypeus with brown diagonal striae; labrum brown. Antennae: scape brown, pedicel pale brown; flagellum creamy white; maxillary palpomeres 1−3 creamy white, Mx4 pale brown distally. Prothoracic coxae creamy, pale brown proximally; meso- and metathoracic coxae dark brown; trochanter, femora and tibia creamy, tarsi brown. Tergal lobes and pleura of meso- and metathorax dark brown. Abdomen creamy white, with brown spots on tergum of each segment, pleura creamy, epiproct and paraprocts creamy white. Fore wings maculate as illustrated ( Fig. 71 ), with a little defined brown transverse band, from proximal end of pterostigma to vein A, interrumpted in CuP. Pterostigma with a dark brown band along posterior end, continuing on cell R1. Hind wings hyaline ( Fig. 71 ).

Morphology. Head concave at vertex, almost as long as its maximum width, H/MxW: 1.16, trapeziform in front view, MxW/MnW: 1.32; compound eyes little pedunculate ( Fig. 73 ), C: 95 microns. Antennal flagellomeres with short, sparse setae. Fore wing: L/W: 2.63. Pterostigma much wider posteriorly, lp/wp: 3.04; Rs slightly curved and shorter than R 2+3-R 4+5; cell M rectangular, areola postica trapeziform. Hind wing Rs-M fused, Rs about five times as long as the fused length; R 4+5 1.3 times as long as Rs. Subgenital plate ( Fig. 75 ) broad, setose, with median projection short, posterior border rounded, with a row of setae as illustrated. Ninth sternum broad, membranous; spermapore circular, surrounded by a small, somewhat elongated pigmented area. Gonapophyses ( Fig. 72 ): V1 long, slender, distally pointed, not extending beyond V2, distal inner margin with a field of short spines; V2 long, stout, distally rounded, with scattered microsetae distally, postero-lateral corner extended, forming a slender, pointed process; V3 broadly triangular, with a row of macrosetae and other setae as illustrated. Paraprocts triangular ( Fig. 74 ), with a dense row of macrosetae along outer margin, sensory fields with 28 trichobothria issuing from basal rosettes. Epiproct ( Fig. 74 ) wide anteriorly, the sides converging posteriorly to widely round posterior border, setal field on distal half, as illustrated.

Measurements. FW: 4075, HW: 3375, F: 788, T: 1675, t1: 575, t2: 138, ctt1: 24, Mx4: 200, f1: 630, f2: 480, f3: 400, f4: 180, IO: 490, D: 320, d: 320, IO/d: 1.53.

Specimens studied. Holotype female. MEXICO. Jalisco, 69 km SW Guadalajara, rd. to Autlán, 1700m., 15.viii.1987, I. W. B. Thornton. Beating branches of Quercus sp. CNIN. Paratypes: 2 females, same data as holotype, CNIN.

Etymology. This species is dedicated to the late Ian W. B. Thornton, a distinguished British-Australian psocopterologist, as a small tribute to his memory (see García Aldrete et al. 2004); he collected the specimens here studied during a field trip in western Mexico with ANGA.

Figures

FIGURES 71 − 75. Steleops thorntoni n. sp. Female. 71. Fore wing and hind wing. 72. Left gonapophyses. 73. Front view of head. 74. Paraprocts and epiproct. 75. Subgenital plate. Scales in mm.