Guapinannus tenuis, 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 : 278-280

Guapinannus tenuis , sp. n.

( Figs 4 , 7 , 9 )

Holotype. Male. COSTA RICA: Unknown locality, no date provided, collector unknown, 1♂ ( UCR _ ENT 00014617 ) ( INBIO).

Etymology: Named for the slender vesica after “tenuis” Latin for slender.

Diagnosis: Recognized by the large body length (2.06 mm), narrow C+Sc (black arrow), distal margin of rc1, rc, and tc cells distinctly double s-shaped (white arrow) ( Fig. 4 ), relatively long s-shaped vesica, and absence of anophoric process ( Fig. 7 ).

Description: Male: Total body length 2.06 mm; length from posterior margin of pronotum to posterior wing margin 1.49 mm; greatest width across pronotum 0.69 mm; wing missing. General coloration: uniformly pale. Vestiture: Dorsum with sparse setae, setae short; setae on posterior margin of forewing long. Structure: Head: Eye about one third as high as head; muscle scars large. Thorax: Anterior pronotal margin straight, posterior margin slightly concave; pits on pronotum large, in distinct clusters; scutellum in dorsal view abruptly 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 on proximal part of wing absent; C+Sc uniformly narrow; distal process of R weakly developed; An1 wing organ on corium weakly developed; rc1 about 3 times as long as wide, much 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 s-shaped; rc2- 3 almost triangular; cub removed from 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, not reaching right pygophore margin, thick 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 straight, tapering, basal process broad; left paramere straight, tapering, basal process broad.

Female: Unknown.

Collecting method and habitat: Unknown.

Figures

FIGURE 4. Dorsal habitus of Guapinannus tatumbia, sp. n., G. tenuis, sp. n., G. tergus, sp. n., G. trilobus, sp. n., and G. uncus, 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 9. Known distributions of Guapinannus spp.