Polyodontotrochus elevatus, González-Mozo & Mckamey, 2024

González-Mozo, Laura & Mckamey, Stuart H., 2024, A new genus and four new species of Darnini (Hemiptera: Membracidae) from South America, Zootaxa 5415 (1), pp. 169-180 : 172-174

Polyodontotrochus elevatus , new species

( Figs. 3 , 8 , 12 , 16 , 25–28)

Diagnosis. Suprahumeral horns of pronotum large and broadly auriculate, apices rounded, in dorsal view and lateral views distinctly exceeding anteriorly beyond and above pronotal median carina, lateral carinae absent.

Description. Color. Head, legs, and abdomen brown; pronotum various shades of brown to black, darkest on underside and posterior margins of suprahumeral horns, immediately to sides of medial carina of metopidium, and an irregular dark brown transverse band at mid length contrasted against an anterior, adjacent pale irregular transverse band.

Head. Ratio of distance between inner margin of eye to outer edge of nearest ocellus 1.01 × distance between inner edges of ocelli; frontoclypeal sutures vertical or almost so; in anterior view with postclypeus straight, ratio of head width between eyes to height along midline 2.1; vertex with weak rugae absent. Thorax. Pronotum. With broadly auriculate, almost apically truncate suprahumeral horns projecting anterolaterally and dorsally, in lateral view exceeding highest point of pronotal median carina, in dorsal view extending anteriorly beyond most anterior part of the metopidium ( Fig. 12 ); median carina weakly elevated, in lateral view evenly rounded in anterior half, more declivous in posterior half, lateral carinae absent; Forewing. Costal cell broad; vein R 4+5 straight or almost so; s crossvein present distad of r-m crossvein; 2 m-cu crossveins. Legs. Prothoracic femora ventrally with strongly sclerotized studs present along entire length of femur but not in rows, without longitudinal ventral groove; Prothoracic tibia with 2 complete rows of strongly sclerotized studs ventrally; mesothoracic trochanters with 3–7 strongly sclerotized studs; femora ventrally with 5–10 strongly sclerotized studs present only in basal quarter, not in rows, with longitudinal ventral groove present only distally; metathoracic leg as genus description. Abdomen. Male genitalia ( Figs. 25–28 ). Subgenital plate convex in ventral view; aedeagus subparallel in anterior view, in lateral view compressed, its ridges oriented horizontally.

Dimensions of male (mm). Length 9.2, maximum width (across suprahumeral horns) 6.0, height above humeral angles (excluding suprahumeral horns) 1.5, ratio of length to width 1.5.

Material examined. ♂ Holotype ( EPNC), with labels “ Ecuador, Orellana, P. N. |Yasuni. Guacamayo, | Saladero. 215 m. | 01 o 17’ 40” S, 76 o 03’ 39” W. | Fogging 02-Feb-2014. A. | Troya, P. Duque ”, “EPNC 29660”, and a red holotype label “HOLOTYPE | Polyodontotrochus | elevatus | Gonzalez-Mozo & McKamey”.

Etymology. The specific name refers to the elevated suprahumeral horns of this species.

Figures

FIGURES 1–6. (1) Polyodontotrochus auriculatus forewing; (2) P. inpa Metathoracic leg; (3) P. elevatus metathoracic tibia; (4–6) P. auriculatus; (4) metathoracic trochanter studs; (5–6) SEM of metathoracic leg: (5) metathoracic trochanter ventral view showing studs; (6) metathoracic femur ventral view showing cucullate setae and studs. Abbreviation: C: Costal vein; CS: cucullate setae; Cu: Cubital vein; M: Medial vein; R: Radial vein.

FIGURES 7–10. Anterior views. (7) P. auriculatus; (8) P. elevatus; (9) P. inpa; (10) P. extentapalaestrus.

FIGURES 11–14. Dorsal views. (11) P. auriculatus; (12) P. elevatus: (13) P. inpa; (14) P. extentapalaestrus.

FIGURES 15–18. Lateral views. (15) P. auriculatus; (16) P. elevatus; (17) P. inpa; (18) P. extentapalaestrus.

FIGURES 25–28. Male genitalia P. elevatus.(25) lateral plate and subgenital plate; (26) subgenital plate; (27) aedeagus anterior view; (28) Style and aedeagus lateral view.