Taxonomic revision of Guapinannus Wygodzinsky, 1951 (Hemiptera: Schizopteridae), with description of 19 new species Author Frankenberg, Sarah 0000-0002-7673-492X Department of Entomology, University of California, Riverside, 900 University Avenue, 92521 Riverside, CA, USA sara. frankenberg @ ucr. edu; http: // orcid. org / 0000 - 0002 - 7673 - 492 X sara.frankenberg@ucr.edu Author Knyshov, Alexander 0000-0002-2141-9447 Department of Entomology, University of California, Riverside, 900 University Avenue, 92521 Riverside, CA, USA sara. frankenberg @ ucr. edu; http: // orcid. org / 0000 - 0002 - 7673 - 492 X & https: // orcid. org / 0000 - 0002 - 2141 - 9447 Author Hoey-Chamberlain, Rochelle 0000-0002-1950-6613 Department of Entomology, University of California, Riverside, 900 University Avenue, 92521 Riverside, CA, USA sara. frankenberg @ ucr. edu; http: // orcid. org / 0000 - 0002 - 7673 - 492 X & https: // orcid. org / 0000 - 0002 - 1950 - 6613 Author Weirauch, Christiane Department of Entomology, University of California, Riverside, 900 University Avenue, 92521 Riverside, CA, USA sara. frankenberg @ ucr. edu; http: // orcid. org / 0000 - 0002 - 7673 - 492 X text Zootaxa 2021 2021-04-14 4958 1 261 286 journal article 7233 10.11646/zootaxa.4958.1.14 877bdc9a-24e9-4b3d-a4f6-3de97398630d 1175-5326 4691718 24D79FED-A8E2-45FA-B37D-89605F56D797 Guapinannus uncus , sp. n. ( Figs 4 , 7 , 9 ) Holotype . Male. BELIZE : Belize , 17.18988°N 88.49765°W , 55m , no date provided, collector unknown, 1♂ ( UCR _ ENT 00090858 ) ( FMNH ). Paratypes : BELIZE : Orange Walk : Rio Bravo Cons. Area 3 Well Tran ( Near Res. Station ), 18.06667°N 88.55°W , 10m , 10 Sep 1995 , P. W. Kovarik , 1♂ ( UCR _ ENT 00094283 ) ( UCR ) . Etymology: Named for the hook-shaped vesica after “uncus” Latin for hook (noun in apposition). Diagnosis: Recognized by the small mid-sized body length ( 0.67 mm ), elongate oval body shape (length to width ratio 3.4) ( Fig. 4 ), and apex of vesica hook-shaped ( Fig. 7 ). Description: Male: Total body length 1.19 mm ; length from posterior margin of pronotum to posterior wing margin 0.97 mm ; greatest width across pronotum 0.27 mm ; greatest width across forewings 0.35 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 indistinct. 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 broad, wider at widest part of wing; distal process of R pronounced; An1 wing organ on corium inflated, elongate, with median notch, without notch articulating with claval process; rc1 about 3 times as long as wide, slightly wider anteriorly; rc about 4 times as long as wide; tc about 3 times as long as wide; part of An1 and Cu forming posterodistal margin of tc slightly wider than other veins; distal margin of rc1, rc, and tc cells double s-shaped; rc2–3 trapezoidal; cub almost reaching wing margin; dc1 with basal portion fairly narrow and elongate. Legs: Claws long. Genitalia ( Fig. 7 ): Pygophore without lobe on right side; vesica with between half and one loop, surpassing right pygophore margin, thick at midpoint, with bottle opener-shaped apex, close to apex rounded; anophoric ridge with process, process short, with single lobe curved, tip pointed; right paramere curved, broad throughout, basal process broad; left paramere straight, tapering, basal process broad. Female: Unknown. Collecting method and habitat: Collected using flight intercept trap.