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.

Figures

FIGURE 2. Habitus in dorsal, lateral, and ventral view of Guapinannus anaticulus, sp. n., and in dorsal view of G. artus, sp. n., G. auriculus, sp. n., G. castigatus, sp. n., G. clava, sp. n., G. dispar, sp. n., and G. falcis, 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 8. Female Guapinannus sp. (UCR_ENT 00101286), genitalic structures including ovipositor and spermathecal gland, and spermathecal duct.

FIGURE 9. Known distributions of Guapinannus spp.