Catonidia triangula, Lv & Long & Yang & Chen, 2024

Lv, Sha-Sha, Long, Jian-Kun, Yang, Lin & Chen, Xiang-Sheng, 2024, Four new species of the planthopper genus Catonidia Uhler, 1896 from China (Hemiptera: Fulgoromorpha: Achilidae), European Journal of Taxonomy 943, pp. 127-143 : 131-133

Catonidia triangula sp. nov.

urn:lsid:zoobank.org:act:A75B7B43-404C-48D9-B340-40E15AD5A905

Figs 1–12 , 47

Diagnosis

Salient features of new species include: forewing ( Figs 1–2 ) grayish white, many grayish brown to brown spots distributed along veins, veins grayish white; medioventral process of pygofer ( Fig. 8 ) triangular, lateral margins straight in ventral view; aedeagus ( Figs 10–11 ) asymmetrical at end, in left lateral view, apical part of phallobasal conjunctival processes nearly angular, lateral side with small ear-like process at subapical part; in right lateral view, apical part of phallobasal conjunctival processes wide, rounded at apex, ear-like process broad and large.

Etymology

The specific epithet is derived from the Latin word ‘ triangular ’, referring to the triangular medioventral process of the male pygofer.

Type material

Holotype

CHINA – Fujian Province • ♂; Wuyishan National Natural Reserve ; 27°67′ N, 117°96′ E; 16 Aug. 2013; Yuan Liu leg.; IEGU.

Paratypes

CHINA – Fujian Province • 1 ♂; same data as for holotype; 5 Aug. 2009; Yan-Li Zheng leg.; IEGU • 4 ♂♂, 1 ♀; same data as for holotype; 16–19 Aug. 2013; Ying-Jian Wang and Yang-Yang Liu leg.; IEGU . – Guizhou Province • 1 ♂; Kuankuoshui National Natural Reserve ; 27°96′ N, 107°19′ E; 16 Aug. 2010; Xiao-Hui Hou leg.; IEGU .

Description

MEASUREMENTS. Body length including forewing: male 8.5–9.2 mm (N = 7), female 9.8 mm (N = 1).

COLORATION. General color grayish white to yellowish brown ( Figs 1–2 ). Vertex pale yellowish brown. Eyes reddish-brown, ocelli light reddish-brown. Genae pale brown. Pronotum and tegula yellowish white to yellowish brown. Mesonotum yellowish brown to fuscous. Forewings grayish white, semihyaline, many grayish brown to brown spots distributed along veins, veins grayish white. Hindwings nearly hyaline, gray, veins light brown. Legs and abdomen yellowish brown.

HEAD AND THORAX. Head ( Figs 1, 3 ) including eyes narrower than pronotum (0.6: 1). Vertex wider than long in middle line (2.6: 1), apex concave, median carina absent, anterior margin broadly rounded, posterior margin rounded concavely, lateral margins ridged. Frons ( Fig. 4 ) longer in middle line than maximum width (1.9: 1), width at base narrower than width at apex (0.8: 1), median carina distinct, lateral margins concave. Postclypeus ( Fig. 4 ) shorter than frons in midline (about 0.5: 1), median carina distinct, lateral margins excavate. Pronotum ( Figs 1, 3 ) longer in midline than vertex (1.8: 1), median carina distinct, lateral carinae raised, not extending to posterior margin, confluent with midline at anterior margin to form angular process. Mesonotum ( Figs 1, 3 ) about 4.2 × as long as pronotum in midline, longer than pronotum and vertex combined (2.7: 1), apical part of median carina clear, lateral carinae unclear. Forewings ( Fig. 5 ) broadened apically, longer than maximal width (2.2: 1). Hindwings ( Fig. 6 ) longer than widest part (1.4: 1).

MALE GENITALIA. Pygofer ( Figs 7–9 ) in lateral view with dorsal margin distinctly shorter than ventral margin, ⅓ of posterior margin strongly angulated caudad; in ventral view, medioventral process triangular, lateral margins straight. Anal tube ( Figs 7, 9 ) longer than widest part by about 1.4: 1 in dorsal view, apical margin rounded and convex, basal margin slightly truncate. Aedeagus ( Figs 10–11 ) asymmetrical at end, in left lateral view, phallobase broad at base, dorsal lobe stout finger-like, apical margin rounded; lateral lobes pointed apically, proximal part of ventral margin slightly rolled up; basal part of ventral lobe constricted into a stalk, bends and extends ventrad, middle part narrowing apically, constricted abruptly at apex; apical part of phallobasal conjunctival processes nearly angular, lateral side with small ear-like process at subapical part; in right lateral view, apical part of phallobasal conjunctival processes wide, rounded, ear-like process broad and large. Gonostyli ( Figs 7, 12 ) longer than wide, base narrow, apical margin broadly rounded, dorsal margin with stout twisted auricular process near middle, inner side of base with finger-like process.

Distribution

China (Fujian, Guizhou provinces) ( Fig. 47 ).

Remarks

This species is similar to Catonidia choui Long & Chen, 2012 , but differs from the latter as follows: (1) forewing grayish white (forewing yellowish brown in C. choui ); (2) medioventral process in ventral view triangular, lateral margins straight (medioventral process in ventral view rounded, lateral margins curved in C. choui ); (3) aedeagus asymmetrical (aedeagus symmetrical in C. choui ).

Figures

Figs 1–12. Catonidia triangula sp. nov., ♂, holotype (IEGU). 1. Habitus, dorsal view. 2. Habitus, lateral view. 3. Head and thorax, dorsal view.4. Frons, ventral view.5. Forewing.6. Hindwing.7. Pygofer, lateral view. 8. Pygofer, ventral view. 9. Pygofer, dorsal view. 10. Aedeagus, left lateral view. 11. Aedeagus, right lateral view. 12. Left gonostyli, inner surface. Scale bars = 0.5 mm.

Fig. 47. Geographic distributions of species of Catonidia Uhler, 1896.