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 robustus , sp. n. ( Figs 3 , 7 , 9 ) Holotype . Male. MEXICO : Chiapas : RSV A El Triunfo , Est. El Triunfo , 16.20286°N 91.86044°W , 1950 m , 08 Aug 1996 – 11 Aug 1996 , A. R . Gillogly, 1♂ ( UCR _ ENT 00094282 ) ( UCR ). Etymology: Named for the extremely thick vesica after “robustus” Latin for robust. Diagnosis: Recognized by the mid-sized body length ( 1.49 mm ), small vein-tracing areoles distributed along scc, rc and rc1 (black arrow) ( Fig. 3 ), slight extensions of the right pygophore margin (black star), and very thick vesica with blunt tip ( Fig. 7 ). Description: Male: Total body length 1.49 mm ; length from posterior margin of pronotum to posterior wing margin 1.1 mm ; greatest width across pronotum 0.28 mm . General coloration: mix of pale and darker brown or reddish brown. Vestiture: Dorsum with dense setae, setae long; setae on posterior margin of forewing extremely 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 medium-sized, evenly distributed; scutellum in dorsal view gradually narrowed to tip, tip rounded. Forewing: With outline elongate oval; membrane contributing about one third of forewing length, posterior distal margin rounded, vein-tracing areoles small, distributed along scc, rc and rc1; C+Sc broad, wider at widest part of wing; distal process of R pronounced; An1 wing organ on corium strongly inflated, triangular, with median notch, without notch articulating with claval process; 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; part of An1 and Cu forming posterodistal margin of tc of similar width as 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 with slightly extended right margin; vesica with about half loop, not reaching right pygophore margin, very thick at midpoint, tapering to blunt tip, close to apex slightly s-shaped; anophoric ridge with process, process short, with single lobe relatively straight, tip pointed; right paramere curved, broad throughout, basal process broad; left paramere straight, tapering, basal process narrow. Female: Unknown. Collecting method: Collected using a flight intercept trap.