Usana fissura Long, Yang & Chen, 2015, sp. nov.
Creators: name: Long, Jian-Kun
name: Yang, Lin
name: Chen, Xiang-Sheng
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Achilidae
Usana
Usana fissura

description: Usana fissura sp. nov.
(Figs 9–12, 61–72)
Measurements. Body length (from apex of vertex to tip of forewing): male 5.2–5.6 mm (n = 9), female 5.9–6.5 mm (n = 18); forewing length: male 4.1–4.7 mm (n = 9, female 4.9–5.5 mm (n = 18).
Coloration. Yellow to brown. Head yellow. Vertex with 2 brown stripes along midline (Figs 9, 11, 61). Frons along the frontoclypeus suture with a brown marking at each side of median carina (Fig. 63). Rostrum pale yellowish brown with apex brown. Genae with a transverse brown stripe beneath antennae (Figs 10, 12, 62). Antennae yellowish brown. Eyes reddish brown, ocellus yellowish white (Fig. 62). Pronotum yellow with 2 longitudinal less pronounced brown stripes between lateral carinae, lateral lobe behind eyes brown, and ventral lobe with a longitudinal brown stripe (Figs 9–12, 61). Mesonotum brown with tricarinae yellowish brown (Figs 9, 11, 61). Tegula yellow. Forewing brown with costal margin from subbase to basal half of second costal cell with a longitudinal yellow stripe; clavus from its base to subapex with a longitudinal yellow stripe between veins PCu and A1; posterior margin from claval apex, then along vein Cu1b to basad apical cross vein with a dark stripe, and along vein R from node to subapex with another dark stripe; each apical cell along apical margin with a dark marking (Figs 9–12, 64). Hindwing pale brown, veins brown. Legs and abdomen yellowish brown.
Head and thorax. Ratio of vertex at posterior margin width to length in midline 2.3. Ratio length of frons in midline to maximum width 1.2, ratio maximum width to width at apex 1.6. Ratio length of postclypeus in midline to length of frons 0.6. Ratio of apical to subapical segment of rostrum 1.3. Ratio length of pronotum in midline to length of vertex 0.7. Mesonotum in midline 7.5 times longer than pronotum, 3.2 times longer than pronotum and vertex combined. Forewing with ratio of length to maximum width 3.0. Hindwing with ratio of length to maximum width 1.9.
Male genitalia. Anal segment in dorsal view (Fig. 66) with maximum width near middle, hence respectively narrowing basad and apically, apical margin roundly concave in middle, ratio length to maximum width 1.0; anal stylet with apex distinctly not exceeding apex of anal segment. Pygofer in lateral view (Fig. 67) with dorsal margin slightly shorter than ventral margin, anterior margin broadly concave above the middle, then broadly convex beneath, posterior margin sinuate with a sharp process with a short blunt process beneath; medioventral process of pygofer in ventral view (Fig. 68) entire, narrowing apically, with apical margin angularly incised. Genital style slightly narrowing apically, with apex roundly convex, dorsal margin gives rise to 2 large sharp processes and a short blunt process; inner surface near anterior margin with a slender finger-like process with its basal 2/3 longitudinally dehiscent distinctly, directed outwards (Figs 69–70). Aedeagus with phallobase in midline deeply fissure from base to subapex, dorsal lobe in dorsal view (Fig. 71) with apical margin roundly convex, right lateral lobe with a large and a small subapical processes, directed basad, either with apical margin roundly convex; ventral lobe in ventral view (Fig. 72) along inner margin of each lateral side from subapical to middle with a longitudinal group of teeth, subapical surface in middle gives rise to a long process with its apical margin roundly convex, directed basad. Phallic appendages narrowing and sharp apically (Figs 71–72).
Type material. Holotype: ♂, CHINA, Guizhou: Jiangkou, Fanjingshan National Natural Reserve (27°92'N, 108°70'E), scrubland, 21 September 2011, J.-K. Long. Paratypes, Guizhou: 1 ♂, 3 ♀♀, same data as holotype; 6 ♂♂, 11 ♀♀, Fanjingshan National Natural Reserve (27°32'N, 108°70'E), scrubland, 21–22 September 2011, Z.-H. Fan (2 ♂♂, 2 ♀♀), X.-F. Yu (1 ♂, 3 ♀♀), Z.-M. Chang (1 ♂, 3 ♀♀), W.-B. Zheng (2 ♂♂, 3 ♀♀); 1 ♀, Libo, Maolan National Natural Reserve (25°30'N, 107°98'E), Karst forest, 21–24 August 2011, Z.-H. Meng; 1 ♂, 3 ♀♀, Anlong, Xianheping Provincial Natural Reserve (24°98'N, 105°61'E), Karst forest, 28 August 2012, J.-K. Long.
Etymology. The species name is derived from the Latin word “ fissura ”, which refers to the aedeagus with phallobase in midline deeply fissured from base to subapex (Fig. 71).
Host plant. Alangium platanifolium (Sieb. et Zucc.) Harms.
Distribution. China (Guizhou).
Remarks. Usana fissura is similar to U. aspergilliformis but differs from the latter in: forewing without transverse stripes (with transverse stripes in U. aspergilliformis); aedeagus with phallobase in midline deeply fissured from base to subapex (not deeply fissured in U. aspergilliformis); and dorsal lobe of phallobase with apical margin not aspergilliform (aspergilliform in U. aspergilliformis).
The host plant information for Usana fissura presented in this paper was retrieved from the collectors.
description: Published as part of Long, Jian-Kun, Yang, Lin & Chen, Xiang-Sheng, 2015, Six new species of the planthopper genus Usana Distant, 1906 (Hemiptera: Fulgoromorpha: Achilidae) from China, pp. 489-507 in Zootaxa 3947 (4) on pages 498-500, DOI: 10.11646/zootaxa.3947.4.2, http://zenodo.org/record/239136