Guapinannus orbiculatus, 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 : 274

Guapinannus orbiculatus , sp. n.

( Figs 3 , 7 , 9 )

Holotype. Male. PANAMA: Bocas del Toro: Bocas del Toro: Almirante, trail to dam on Nigua Creek , 9.29792°N 82.4211°W, 32m, 31 Mar 1959, H. S. Dybas, 1♂ ( UCR _ ENT 00090718 ) ( FMNH).

Paratypes: PANAMA: Bocas del Toro : Bocas del Toro: Almirante, trail to dam on Nigua Creek , 9.29792°N 82.4211°W, 12m, 31 Mar 1959, H. S. Dybas, 1♂ ( UCR _ ENT 00097813 ), 4♀ ( UCR _ ENT 00097814 -UCR_ENT 00097817), 2 nymphs ( UCR _ ENT 00097818 , UCR_ENT 00097819) ( FMNH) . Chiriqui: Near Nueva California W. of Finca Palo Santo , 8.5°N 82.41667°W, 1524 m, 10 Mar 1959, H. S. Dybas, 1♂ ( UCR _ ENT 00090796 ) ( FMNH) .

Diagnosis: Recognized by the small mid-sized body length (1.26 mm), elongate body shape ( Fig. 3 ), one-loop, relatively thick vesica with pointed tip, and short, slender, pointed anophoric process (black arrow) ( Fig. 7 ).

Description: Male: Total body length 1.26 mm; length from posterior margin of pronotum to posterior wing margin 0.9 mm; greatest width across pronotum 0.53 mm; greatest width across forewings 0.68 mm. 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 concave, posterior margin slightly concave; pits on pronotum medium-sized, evenly distributed; 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 squarish, vein-tracing areoles on proximal part of wing absent; C+Sc uniformly fairly 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 4 times as long as wide; tc about 3 times as long as wide; part of An1 and Cu forming posterodistal margin of tc slightly wider than other veins; distal margin of rc1, rc, and tc cells double s-shaped; rc2-3 trapezoidal; cub almost reaching wing margin; dc1 horse head-shaped. 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 rounded; anophoric ridge with process, process short, slender, with single lobe curved, tip pointed; right paramere curved, tapering, basal process broad; left paramere straight, tapering, basal process narrow.

Female: As in male and generic description.

Collecting method and microhabitat: Collected using Berlese and Winkler extraction from the cortex of a hollowed palm stump and from floor litter at base of a log and cut stump.

Etymology: Named for the rounded vesica after “orbiculatus” Latin for round.

Figures

FIGURE 3. Dorsal habitus of Guapinannus graziae, sp. n., G. minutus, sp. n., G. orbiculatus, sp. n., G. plurilobus, sp. n., G. policis, sp. n., G. robustus, sp. n., and G. sinuosus, 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.