Guapinannus falcis, 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 : 272

Guapinannus falcis , sp. n.

( Figs 2, 7, 8, 9)

Holotype. Male. COSTA RICA: Heredia: 6 km ENE Vara Blanca , 10.18333°N 84.11667°W, 2000 m, 16 Mar 2002, INBio-OET-ALAS, 1♂ ( UCR _ ENT 00014616 ) ( INBIO).

Paratypes: COSTA RICA: Alajuela: Upala Co.: Bijagua, San Miguel , Finca Inti-Aura , 10.75778°N 85.00939°W, 300 m, 16 Apr 2011 – 20 May 2011, I. Chacon, 1♂ ( UCR _ ENT 00014608 ) ( INBIO) . Heredia: Sarapiqui Co.: P.N.B. Carrillo 5 km. E Vara Blanca , 10.17226°N 84.11213°W, 2100 m, 20 Apr 2002, INBio-OET-ALAS, 1♀ ( UCR _ ENT 00014611 ) ( INBIO) . P.N.B. Carrillo 6 km. ENE Vera Blanca , 10.15°N 83.91667°W, 2000 m, 17 Feb 2002 – 21 Feb 2002, INBio-OET-ALAS, 1♀ ( UCR _ ENT 00014612 ) ( INBIO) ; 10 Mar 2002, INBio-OET-ALAS, 1♀ ( UCR _ ENT 00014610 ), 1♂ ( UCR _ ENT 00014613 ) ( INBIO) . 6 km ENE Vara Blanca , 10.18333°N 84.11667°W, 2000 m, 16 Mar 2002, INBio-OET-ALAS, 1♀ ( UCR _ ENT 00014614 ) ( INBIO) ; 22 Mar 2002, INBio-OET-ALAS, 4♀ ( UCR _ ENT 00014618 -UCR_ENT 00014621) ( INBIO) .

Etymology: Named for sickle shaped vesica after “flax” Latin for sickle.

Diagnosis: Recognized by the mid-sized body length (1.56 mm), dense vestiture, part of An1 and Cu forming posterodistal margin of tc more pronounced than other veins (black arrow) ( Fig. 2), long, relatively slender vesica, with s-shaped bent proximal of acute tip, and short, curved anophoric process with pointed tip (black arrow) ( Fig. 7). Most similar to G. bierigi , sp. n., that is also known from Costa Rica, but distinguished by the much smaller distance of cub from the wing margin compared to G. bierigi , sp. n.

Description: Male: Total body length 1.56 mm; length from posterior margin of pronotum to posterior wing margin 1.27 mm; greatest width across pronotum 0.65 mm; greatest width across forewings 0.87 mm. General coloration: mix of pale and darker brown or reddish brown. Vestiture: Dorsum with dense, long setae; setae on posterior margin of forewing long. Structure: Head: Eye about one third as high as head; muscle scars not observed. Thorax: Anterior pronotal margin concave, posterior margin slightly concave; pits on pronotum large, evenly distributed; scutellum in dorsal view abruptly narrowed to tip, tip pointed. Forewing: With outline broad anteriorly, elongate oval; membrane contributing about one third of forewing length, posterior distal margin squarish, vein-tracing areoles on proximal part of wing absent; C+Sc uniformly broad; 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 5 times as long as wide; tc more than 3 times as long as wide; part of An1 and Cu forming posterodistal margin of tc more pronounced than other veins; 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, surpassing right pygophore margin, relatively slender at midpoint, tapering to acute tip, close to apex slightly s-shaped; 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: As in male and generic description.

Collecting method and habitat: Collected using Malaise trap in unknown habitat.