Fistulatus Zhang, 1997

Yang, Yanqiong, Dai, Renhuai & You, Siying, 2024, Key to species of the genus Fistulatus Zhang, 1997 (Hemiptera: Cicadellidae: Deltocephalinae: Drabescini) with description of two new species from China, Zootaxa 5446 (1), pp. 143-150 : 144-145

Genus Fistulatus Zhang, 1997

Fistulatus Zhang, Zhang & Chen, 1997: 237 ; Cen & Cai, 2002: 117–119; Shang & Zhang, 2003: 21; Shang et al., 2006: 152; Lu & Zhang, 2014: 247

Type species: Fistulatus sinensis Zhang, Zhang & Chen, 1997: 237

Description. Crown arc-shaped with several thin transverse carinae on anterior margin, slightly longer than next to eyes, and slightly concave between ocelli. Ocelli marginal, distant from eyes. Antenna slender, longer than half body length, inserted near upper corner of eyes; antennal pit deep and expanded onto frontoclpyeus. Anteclypeus narrowed medially but expanded apically. Lora large and gena tapering anteriorly to anteclypeus with both sides nearly straight. Pronotum produced anteriorly with lateral margin short and posterior margin slightly concave. Scutellum triangular and nearly same length as pronotum. Forewing with four apical cells, three subapical cells, inner subapical cell open; Foretibia dorsal seta formula 1+4; hind femur apical setal formula 2+2+1. Male pygofer side with paired lateral processes. Valve nearly trapezoidal. Subgenital plates triangular, without macrosetae, distally attenuate. Connective short, Y-shaped. Aedeagus large with basal apodeme narrow and elongate; shaft tubular and elongate with paired processes or flanges, gonopore apical on posterior surface.

Distribution. China (Guizhou, Guangxi, Henan, Hebei, Hubei, Hunan, Shaanxi, Shanxi, Yunnan, Zhejiang); Malaysia

Remarks. Fistulatus is similar to Carvaka Distant , except: 1) the distance between the ocelli and eyes is more than 2 times the diameter of the ocelli (closer to eyes in Carvaka ); 2) the pygofer side has paired processes; 3) the aedeagus usually lacks apical paired processes. Fistulatus also resembles Bhatia Distant but differs from the latter in lacking aedeagal basal processes and appendages between the aedeagus and connective.

Checklist to species of Fistulatus

F. athena Shang & Zhang, 2003: 21–22 , fig.2 Distribution: Malaysia (Sabah).

F. bidentatus Cen & Cai, 2002: 117–119 , figs.9–17 Distribution: China (Zhejiang).

F. luteolus Cen & Cai, 2002: 119–120 , figs.18–25 Distribution: China (Zhejiang, Henan, Hubei, Hunan, Guizhou).

F. monkoboensis Shang & Zhang, 2003: 21–22 , fig.1 Distribution: Malaysia (Sabah).

F. rectilineus Shang & Zhang, 2006: 152–154 , figs.1–7 Distribution: China (Sichuan).

F. sinensis Zhang, Zhang & Chen, 1997: 237–238 , fig.2 Distribution: China (Shaanxi, Shanxi, Henan, Hebei, Gansu, Guizhou).

F. quadrispinosus Lu & Zhang, 2014: 247 , fig.1 Distribution: China (Zhejiang)

F. biconjugara Yang & Dai sp. nov. Distribution: China (Guizhou).

F. brevimarginalis Yang & Dai sp. nov. Distribution: China (Yunnan).

Key to species of male Fistulatus

1. Pygofer with two pairs of processes....................................................................... 2

-. Pygofer with only one pair of processes.................................................................... 5

2. Aedeagal shaft with one or more processes in distal half; pygofer processes extended mesad......................... 3

-. Aedeagal shaft without processes in distal half; pygofer processes extended distad ( Figs 6 , 20, 21 )............. F. luteolus

3. Aedeagal shaft with pair of short, slender preapical processes ( Figs 1 , 10, 11 )......................... F. quadrispinosus

-. Aedeagal shaft with process or processes flangelike.......................................................... 4

4. Aedeagal shaft with a pair of short apical processes; ventral process of pygofer side extended toward base ( Figs 2 , 12, 13 ).................................................................................... F. biconjugara sp. nov.

-. Aedeagal shaft with one dorsal preapical process; ventral process of pygofer extended toward end ( Figs 3 , 14, 15 )........................................................................................ F. brevimarginalis sp. nov.

5. Aedeagal shaft with two short pairs of process, one preapical and one apical ( Figs 7 , 22, 23 )................. F. bidentatus

-. Aedeagal shaft with only one pair of processes............................................................. 6

6. Style with apical extension; aedeagus with pair of sharp lateral spines near midlength ( Figs 9 , 26, 27 )........... F. sinensis

-. Style without apical extension; aedeagus without sharp lateral preapical spines.................................... 7

7. Pygofer with processes directed medially; aedeagus with shaft relatively straight in lateral view ( Figs 8 , 24, 25 )..................................................................................................... F. rectilineus

-. Pygofer with processes directed ventrally; aedeagus with shaft curved dorsally in lateral view......................... 8

8. Connective with lateral processes; style with apical process slightly curved laterally, digitate; pygofer process arising preapically ( Figs 4 , 16, 17 )................................................................................. F. athena

-. Connective without lateral processes; style with apical process strongly curved laterally, footlike; pygofer process arising at apex ( Figs 5 , 18, 19 )....................................................................... F. monkoboensis

Figures

FIGURES 1–9. Fistulatus species; 1, F. quadrispinosus, pygofer, lateral view (after Lu & Zhang, 2014); 2, F. biconjugara sp. nov., aedeagus, pygofer, lateral view; 3, F. brevimarginalis sp. nov., pygofer, lateral view; 4, F. athena, pygofer, lateral view (after Shang & Zhang, 2002); 5, F. bidentatus, pygofer, lateral view; 6, F. luteolus, pygofer, lateral view; 7, F. monkoboensis, pygofer, lateral view (after Shang & Zhang, 2002); 8, F. rectilineus, pygofer, lateral view; 9, F. sinensis, pygofer, lateral view.

FIGURES 10–27. Fistulatus species; 10, 11 F.quadrispinosus, aedeagus, ventral and lateral view (after Lu & Zhang, 2014); 12, 13 F. biconjugara sp. nov., aedeagus, ventral and lateral view; 14, 15 F. brevimarginalis sp. nov., aedeagus, ventral and lateral view; 16, 17 F. athena, aedeagus, ventral and lateral view (after Shang & Zhang, 2002); 18, 19 F. monkoboensis, aedeagus, ventral and lateral view (after Shang & Zhang, 2002); 20, 21 F. luteolus, aedeagus, ventral and lateral view; 22, 23 F. bidentatus, aedeagus, ventral and lateral view; 24, 25 F. rectilineus, aedeagus, ventral and lateral view; 26, 27 F. sinensis, aedeagus, ventral and lateral view.