Deferunda acuminata Chou & Wang 1985
Creators: name: Lv, Shasha
name: Chen, Xiangsheng
name: Long, Jiankun
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Achilidae
Deferunda
Deferunda acuminata

description: Deferunda acuminata Chou & Wang, 1985
Figs 27–39
Deferunda acuminata Chou & Wang, 1985 (in Chou et al., 1985): 32.
Material examined. 10♁♁, 8♀♀, Diaoluoshan National Natural Reserve, Hainan Province, 16 July 2007, Zheng-Guang Zhang, Qiong-Zhang Song and Ji-Chun Xing; 3♁♁, 6♀♀, DaTian National Natural Reserve, Hainan Province, 10 July 2011, Bing Zhang and Ji-Chun Xing; 4♁♁, 3♀♀, DaTian National Natural Reserve, Hainan Province, 4–6 April 2014, Hai-Yan Sun, Yuan Liu, Zheng-Xiang Zhou and Mei-Na Guo; 3♁♁, 8♀♀, Jianfengling National Natural Reserve, Hainan Province, 12 July 2007, Ji-Chun Xing and Qiong-Zhang Song.
Measurements. Length (including forewing): male 3.4–4.1 mm (N = 20), female 3.4–4.5 mm (N = 25).
Coloration. General color grayish yellow to brownish (Figs 27, 28). Head (Figs 27, 29) grayish white. Vertex (Figs 27, 29) with 2 long fuscous stripes along midline from apical third to apex, posterior margin with a brown transverse stripe each sides. Frons (Fig. 30) grayish white, with an inverted chevron shaped marking, lateral margins with 2 slender and 1 broad dark brown transverse stripes, middle area white, each side with an oblique dark brown wedge-shaped stripe. Genae (Fig. 28) grayish white, with 3 fuscous transverse stripes before eyes (2 above and 1 below ocelli), 1 short transverse stripe dorsad, area beneath antenna with a yellowish brown marking. Eyes fulvous, ocelli reddish-brown. Antennae yellowish brown to brown. Lateral areas of pronotum (Figs 27, 29) with 1 brown spots on both sides. Mesonotum (Figs 27, 29) with irregular yellowish brown to fuscous markings. Tegula yellowish white to brownish. Forewings (Fig. 31) pale brown, many brown to fuscous spots scattered, veins with many white vesicular markings, callus blackish brown, tinged with light red marking. Hindwings (Fig. 32) brownish, base of veins brown. Abdomen fuscous, lateral margins brown.
Head and thorax. Head (Figs 27, 29) rectangular. Vertex medially longer than wide at base (1.47: 1), disk depressed, with middle carina, lateral carinae strongly keeled. Frons (Fig. 30) near rhomboid, longer in midline than wide at widest portion (about 1.32: 1), with a weak median carina, lateral margins strongly foliate. Rostrum with apical as long as subapical segment. Pronotum (Figs 27, 29) short, in midline shorter than vertex (0.55: 1), with 3 longitudinal carinae. Mesonotum (Figs 27, 29) longer in midline than vertex and pronotum combined (1.73: 1), with 3 carinae. Forewing (Fig. 31) slender, longer than maximum width (2.82: 1), CuA 1 obviously convex distad of clavus, not reaching MP. Hindwings (Fig. 32) wide, longer than widest part (1.94: 1). Hind tibiae with a lateral spine.
Male genitalia. Pygofer (Figs 36, 37) in lateral view, gradually widened from the back to the abdomen, anterior margin strongly concave in the middle, posterior margin distal half obliquely straight, with an obtuse angular process near the middle, medioventral process with a small obtuse process at the apex of dorsal margin; in ventral view, basal margin of pygofer broadly rounded, medioventral process tapering distally, apical margin angular. Anal tube (Fig. 33) nearly square in dorsal view, slightly wider at base than apex, apical margin with a wide angular depression medially, anal style long, apical margin rounded and convex, obviously extending out apical margin of anal tube. Aedeagus (Figs 38, 39), asymmetrical bilaterally, tubular, membranous, divided into 4 lobes at apex; in ventral view, ventral lobe shorter than dorsal lobe, apical margin angular concave medially, lateral margins serrated, with 7–8 dentate spikes, with a small straight process in the middle toward the base; in dorsal view, right and left dorsal lobes of phallobase separated, apical margins obtuse rounded, each with a row of serrate spines from middle to base, lateral margin of right dorsal lobe with a triangular process medially. Gonostyli (Figs 34, 35) bow-shaped, apex rounded and convex; in ventral view, outer margin of distal half with single, large, hornlike process; in dorsal view, distal half of dorsal margin bearing 1 pointed dentate process oriented inward, middle area with 1 twisted broad enlarged process oriented outward, basal side with an obtuse angular process, outer side with a fingerlike process.
Remarks. Chou & Wang (in Chou et al., 1985) described the D. acuminata based on one male specimen from Xinglong, Hainan province, China. In our study we examined topotypic material (20 male specimens) which we identified as D. acuminata based on external morphological characteristics which according to the original description appear completely congruent to those of D. acuminata.
Distribution. China (Hainan) (Fig. 40).
description: Published as part of Lv, Shasha, Chen, Xiangsheng & Long, Jiankun, 2023, Two new species of the planthopper genus Deferunda Distant from China (Hemiptera: Fulgoromorpha: Achilidae), with the first description of the male of Deferunda acuminata Chou & Wang, pp. 483-493 in Zootaxa 5256 (5) on pages 490-492, DOI: 10.11646/zootaxa.5256.5.4, http://zenodo.org/record/7758970