Guapinannus sinuosus, Frankenberg & Knyshov & Hoey-Chamberlain & Weirauch, 2021

Frankenberg, Sarah, Knyshov, Alexander, Hoey-Chamberlain, Rochelle & Weirauch, Christiane, 2021, Taxonomic revision of Guapinannus Wygodzinsky, 1951 (Hemiptera: Schizopteridae), with description of 19 new species, Zootaxa 4958 (1), pp. 261-286 : 277-278

Guapinannus sinuosus , sp. n.

( Figs 3 , 7 , 9 )

Holotype. Male. MEXICO: Chiapas: Palenque , 15.63333°N 92.65°W, 1640m, 02 Jul 1983 – 30 Jul 1983, S. B. Peck, J. Kukalova-Peck, R. S. Anderson, 1♂ ( UCR _ ENT 00102050 ) ( FMNH).

Paratypes: MEXICO: Chiapas: El Bosque (6.6 mi SW) , 17.01667°N 92.78333°W, 1463 m, 29 Aug 1973, A. F. Newton, 7♀ ( UCR _ ENT 00101241 , UCR_ENT 00102051-UCR_ENT 00102053) ( FMNH) . Playón de la Gloria, 16.16028°N 90.90139°W, 160 m, 26 Jun 2008, collector unknown, 1♂ ( UCR _ ENT 00120069 ) ( MTEC) .

Etymology: Named for the s-shaped vesica after “sinuosus” Latin for bending.

Diagnosis: Recognized by the mid-sized body length (1.49 mm), C+Sc margin broad anteriorly and more slender posteriorly, distinctly double s-shaped margin of rc1, rc, tc cells (black arrow) ( Fig. 3 ), and relatively tick and s-shaped vesica ( Fig. 7 ).

Description: Male: Total body length 1.49 mm; length from posterior margin of pronotum to posterior wing margin 0.9 mm; greatest width across pronotum 0.54 mm. General coloration: uniformly pale. Vestiture: Dorsum with sparse setae, setae short; setae on posterior margin of forewing long. Structure: Head: Eye almost half as high as head; muscle scars large. Thorax: Anterior pronotal margin concave, posterior margin slightly concave; pits on pronotum small, evenly distributed; scutellum in dorsal view gradually narrowed to tip, tip pointed. Forewing: With outline elongate oval; membrane contributing about one third of forewing length, posterior distal margin rounded, vein-tracing areoles on proximal part of wing absent; C+Sc uniformly broad; distal process of R weakly developed; An1 wing organ on corium strongly inflated, without notch articulating with claval process, rounded, without median notch; rc1 about 3 times as long as wide, slightly wider anteriorly; rc about 5 times as long as wide; tc about 3 times as long as wide; distal margin of rc1, rc, and tc cells double s-shaped; rc2–3 almost triangular; cub almost reaching wing margin; dc1 with basal portion relatively wide and short. Legs: Claws long. Genitalia ( Fig. 7 ): Pygophore without lobe on right side; vesica with between half and one loop, not reaching right pygophore margin, thick at midpoint, tapering to acute tip, close to tip slightly s-shaped; anophoric ridge with process, process short, with single lobe curved, tip pointed; right paramere curved, tapering, basal process broad; left paramere straight, tapering, basal process narrow.

Female: As in male and generic description.

Collecting method and habitat: Collected using Berlese extraction, flight intercept trap, and sifting leaf litter in closed forest, cloud forest with pines, mature wet forest, and rainforest.

Figures

FIGURE 3. Dorsal habitus of Guapinannus graziae, sp. n., G. minutus, sp. n., G. orbiculatus, sp. n., G. plurilobus, sp. n., G. policis, sp. n., G. robustus, sp. n., and G. sinuosus, sp. n. Arrows and stars indicate diagnostic features listed in the species diagnoses.

FIGURE 7. Male genitalic features of Guapinannus spp., dorsal view, showing species-diagnostic differences in vesica, right and left parameres, and anophoric process.

FIGURE 9. Known distributions of Guapinannus spp.