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

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Guapinannus tergus

sp. n.

Guapinannus tergus , sp. n.

( Figs 4 View FIGURE 4 , 7 View FIGURE 7 , 9 View FIGURE 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). GoogleMaps

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) GoogleMaps .

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 View FIGURE 4 ), almost full-loop, circular vesica, and long anophoric process with curved single tip (black arrow) ( Fig. 7 View FIGURE 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 View FIGURE 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.


University of California


Field Museum of Natural History