Dietrichia Y-J. Li, Dai & Jiang 2025, gen. nov.
Creators: name: Li, Yu-Jian
name: Dai, Ren-Huai
name: Li, Zi-Zhong
name: Jiang, Li-Na
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadellidae
Dietrichia

description: Dietrichia Y-J. Li, Dai & Jiang, gen. nov.
Type Species: Midoria expanda Li, Wang, Yang & Dai, 2024
Description. Body small, length about 7.5–9.0 mm, usually brown or light brown. Head foliaceous, slightly narrower than greatest width of pronotum (Fig. 1a, d). Crown in lateral view straight, sloping anterad in continuous line with dorsal profile of pronotum, in dorsal view somewhat pentagonal, median length shorter than width between eyes, surface evenly punctate, median longitudinal carina complete but not strongly elevated, ocelli slightly anterad of line between anterior margin of eyes, closer to each other than to eyes (Fig. 1a, d). Face concave, frontoclypeus not visible in lateral aspect, flattened medially, evenly tapered toward margin of crown (Fig. 1c, f). Pronotum evenly widened posterad in dorsal view with posterolateral angles slightly prominent; scutellum and mesonotum forming nearly equilateral triangle (Fig. 1a, d). Forewing veins elevated and distinct, without darkly pigmented tubercles, with additional branches of longitudinal veins in corium beyond outer anteapical cells, claval veins separate and distinct throughout length (Fig. 1a, c, d, f).
Male pygofer nearly triangular, without long ventrolateral processes, lobe gradually narrowing from base to apex, apex narrow and curved dorsally, and with a small process on apical half of ventral margin (Fig. 2a, e). Subgenital plate nearly as long as pygofer, widest near midlength, tapering both anteriorly and posteriorly (Fig. 2a, e); Aedeagus shaft compressed, with a small angular protrusion on the ventral surface near the end, without pairs of moderately long processes subapically on posteroventral surface (Fig. 2b, f). Style elongated, slightly recurved, apex footlike, anterior portion slender (Fig. 2d, h). Connective T-shaped with dorsomedial keel.
Female unknown.
Distribution. China (Yunnan).
Etymology. This genus is named after Dr. Christopher H. Dietrich from University of Illinois, Champaign, USA in dedication to his great contribution to the taxonomic study of leafhopper.
Remarks. The new genus is similar in body size and overall structure to Midoria Kato. It differs from Midoria and other Ledrini as follows: (1) male pygofer (Fig. 2a, e) without long ventrocaudal process, gradually narrowing from base to apex, apex narrow and curved dorsally, and with a small process on apical half of ventral margin; (2) aedeagus (Fig. 2b, c, f, g) without one or two pairs of moderately long processes subapically on posteroventral surface; (3) forewing without obvious black or brown tubercles along veins.
description: Published as part of Li, Yu-Jian, Dai, Ren-Huai, Li, Zi-Zhong & Jiang, Li-Na, 2025, Notes on the leafhopper genus Midoria Kato (Hemiptera: Cicadellidae: Ledrinae), with descriptions of one new genus and three new species from China, pp. 181-191 in Zootaxa 5632 (1) on page 183, DOI: 10.11646/zootaxa.5632.1.11, http://zenodo.org/record/15371336