Usanus xochipalensis, Pinedo-Escatel & Dietrich, 2020

Pinedo-Escatel, J. Adilson & Dietrich, Christopher H., 2020, Nomenclatural changes and two new species in the leafhopper genus Usanus DeLong (Hemiptera: Cicadellidae) with notes on conservation status, Zootaxa 4822 (4), pp. 567-576 : 572

Usanus xochipalensis sp. nov.

( Figs. 3, 5, 7, 9-10, 12, 16–17, 19–21 , 25–26)

Type material. HOLOTYPE ♂: MEXICO: Guerrero, 6 mi. E. Xochipala, July–19–1941, Carroll, Schaffner, Friedlander Colls ( TAMU)

Description. Dorsal color brownish with symmetrical black spots, venter mostly black ( Figs. 3 and 5 ). Crown with broad pair of black spots near anterior margin and smaller pair near eyes, ecdysial line black and broad, wider than ocelli diameter. Ocellocular area black. Frontoclypeus black with thin yellowish arcuate lines next to lateral suture and midline. Anteclypeus black with yellowish spots near base. Gena dark yellowish with large black spots below eyes, stramineous distally. Lorum yellowish, suture black through length ( Fig. 7 ). Pronotum dark–brown with gold spots on anterior margin below eyes, some irregular and regular large pair of black spots centrally. Exposed part of mesonotum orange ( Fig. 3 ). Forewing translucent with intense dark brown veins ( Fig. 3 ). Venter and legs mostly black ( Fig. 5 ).

Male genitalia. Pygofer lobe triangular, strongly sclerotized dorsally, macrosetae scattered over distal third, 1.2x longer than wide ( Fig. 10 ). Segment X well sclerotized laterally and dorsally ( Fig. 12 ). Valve rounded and projected posterad, 1.3x wider than long. Plate slightly shorter than pygofer length, triangular with uniseriate macrosetae laterally. Style base relatively slender, preapical lobe reduced, apophysis short, curved, not expanded with apex rounded and blunt ( Fig. 19 ). Connective, steam apex emarginate ( Fig. 20 ). Aedeagus curved dorsad, with two pairs of processes, one at midlength of shaft directed basad, second broad and directed dorsad, lateral flanges relatively short and broadly rounded, apex serrate anteriorly in lateral view ( Figs. 16–17, 21 , and 25–26).

Female genitalia. Unknown.

Immature stages. Unknown.

Type locality. Xochipala , Guerrero ( Mexico), Figs. 1 and 9 .

Seasonality. This species occurs in July.

Etymology. The species epithet refers to the type locality.

Measurements. Body length, male 5.79 mm, female unknown; head width 1.87 mm; crown length 0.18 mm; crown width 1.04 mm; eye length 0.20 mm; eye width 0.64 mm; width between ocelli 0.65 mm; ocellocular area length 0.3 mm; ocellocular area width 0.13 mm; frontoclypeus length 0.83 mm; frontoclypeus median width 0.83 mm; frontoclypeus apex width 0.32 mm; anteclypeus length 0.29 mm; anteclypeus width 0.23 mm; lorum length 0.31 mm; lorum width 0.23 mm; pronotum length 0.78 mm; pronotum width 1.68 mm; scutellum length 0.92 mm; scutellum width 1.17 mm; forewing length 3.91 mm.

Remarks. This species resembles other Usanus spp. in external morphology but differs in having a pair of processes arising at the midlength of the aedeagal shaft and in having the apex of the shaft serrate ( Figs. 16 and 25).

Figures

FIGURE 1. Distribution of the endemic Athysanini leafhopper genus Usanus DeLong in Mexico.

FIGURES 2–9. Leafhopper aspect. (2, 4, 6, 8) Usanus igualaensis sp. nov.; (3, 5, 7, 9) Usanus xochipalensis sp. nov.; 2–3 dorsal view; 4–5 lateral view; 6–7 anterior view; 8–9 labels.

FIGURES 10–22. Male genital capsule morphology. (10, 12, 16–17, 19–21) Usanus xochipalensis sp. nov.; (11, 13–15, 18, 22) Usanus igualaensis sp. nov.; 10–11 pygofer, lateral view; 12–13 pygofer, dorsal view; 14 valve and subgenital plates, ventral view; 15–16 anterior view; 17 apex of aedeagus, lateral view; 18–19, right style, ventral view; 20 connective, ventral view; 21–22 aedeagus, ventral view.