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 artus , sp. n. ( Figs 2 , 7 , 9 ) Holotype . Male. MEXICO : Veracruz : Road to Ruiz Cortinez , 18.5229°N 95.15441°W , 1114 m , 05 Jun 2016 , R . S. Anderson , 1♂ ( UCR _ ENT 00125959 ) ( UCR ). Paratypes : MEXICO : Veracruz : Road to Ruiz Cortinez , 18.5229°N 95.15441°W , 1114 m , 05 Jun 2016 , R . S. Anderson , 1♀ ( UCR _ ENT 00125960 ) ( UCR ) . Road to Ruiz Cortinez , 18.52241°N 95.14957°W , 1170 m , 04 Jun 2016 , R . S. Anderson , 1♀ ( UCR _ ENT 00125961 ) ( UCR ) . San Andres Tuxtla Co. : 18.52303°N 95.15453°W , 1109 m , 05 Jun 2016 , Manuel Barrios , 2♂ ( UCR _ ENT 00128215 , UCR_ENT 00128216) ( UCR ) . Etymology: Named for narrow rc cell of the forewing in dorsal view after “artus” Latin for narrow. Diagnosis: Recognized by the mid-sized body length ( 1.29 mm ), elongate oval forewing outline, rc about 5 times as long as wide (black star), tc about 3 times as long as wide ( Fig. 2 ), lateral lobe on right side of pygophore (black star), slender vesica, and short, broad anophoric process with blunt tip (black arrow) ( Fig. 7 ). Similar to G. auriculus , sp. n. that is also known from Veracruz in Mexico but distinguished by the characters listed in the diagnosis. Description: Male: Total body length 1.29 mm , length from posterior margin of pronotum to posterior wing margin 1.04 mm ; greatest width across pronotum 0.54 mm ; greatest width across forewings 0.75 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 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 large, in distinct clusters; scutellum in dorsal view abruptly narrowed to tip, tip rounded. Forewing: with outline broad anteriorly, elongate oval; membrane contributing about one third of forewing length, posterior distal margin squarish, veintracing areoles on proximal part of wing absent; C+Sc wider at widest part of wing; distal process of R pronounced; An1 wing organ on corium strongly inflated, rounded, with median notch, without notch articulating with claval process; rc1 about 3 times as long as wide, much wider anteriorly; rc about 5 times as long as wide; tc 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 almost triangular; cub almost reaching wing margin; dc1 horse headshaped. Legs: Claws long. Genitalia ( Fig. 7 ): Pygophore with lobe on right side; vesica with between half and one loop, not reaching right pygophore margin, relatively slender at midpoint, tapering to acute tip, close to apex rounded; anophoric ridge with process, process short, broad, with single lobe curved, tip blunt; right paramere curved, tapering, basal process narrow; left paramere, tapering, basal process narrow. Female: As in male and generic description. Collecting method and habitat: Collected using sifting leaf litter, Winkler extraction in mixed hardwood forest.