Guapinannus tergus, 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 : 280

Guapinannus tergus , sp. n.

( Figs 4 , 7 , 9 )

Holotype. Male. ECUADOR: Pastaza: 25 km N Puyo , 1.2855°S 78.02291°W, 1000 m, 13 Jul 1976, S. B. Peck, 1♂ ( UCR _ ENT 00090642 ) ( FMNH).

Paratypes: ECUADOR: Pastaza: Pastaza, 1.43583°S 78.00194°W, 972m, 13 Jul 1976, S. B. Peck, 4♂ ( UCR _ ENT 00090643 -UCR_ENT 00090646) ( FMNH) .

Etymology: Named for the long ridge-like process on the anophoric after “tergus” Latin for ridge (noun in apposition).

Diagnosis: Recognized by the very small body length (0.67 mm), small vein-tracing areoles along rc and rc1 (black arrow) ( Fig. 4 ), almost full-loop, circular vesica, and long anophoric process with curved single tip (black arrow) ( Fig. 7 ).

Description: Male: Total body length 0.67 mm; length from posterior margin of pronotum to posterior wing margin 0.52 mm; greatest width across pronotum 0.28 mm; greatest width across forewings 0.42 mm. General coloration: mix of pale and darker brown or reddish brown. Vestiture: Dorsum with sparse setae, setae short; 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 medium-sized, evenly distributed; scutellum in dorsal view abruptly narrowed to tip, tip pointed. Forewing: With outline broad anteriorly; membrane contributing about one third of forewing length, posterior distal margin squarish, vein-tracing areoles small, distributed along rc and rc1; C+Sc fairly narrow, 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 4 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 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 long, with single lobe curved, tip pointed; right paramere curved, broad throughout, basal process narrow; left paramere straight, broad throughout, basal process narrow.

Female: Unknown.

Collecting method and habitat: Collected using Berlese extraction in cloud forest litter.

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.