Journal of Threatened Taxa | www.threatenedtaxa.org | 26 December 2019 | 11(15): 15053–15060

 

 

 

A review of the leafhopper tribe Agalliini (Hemiptera: Cicadellidae: Megophthalminae) with a revised key to the known Pakistani genera and species

 

Hassan Naveed 1, Kamran Sohail 2, Waqar Islam 3 & Yalin Zhang 4

 

1 College of Life Science, Leshan Normal University, Leshan, Sichuan 614004, China.

1,2,4 Key Laboratory of Plant Protection Resources and Pest Management of the Ministry of Education, Entomological Museum, Northwest A&F University, Yangling, Shaanxi 712100, China.

3 Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou 350007, China.

1 hassan.naveed88@outlook.com, 2 kamran.sohail@nwafu.edu.cn, 3 ddoapsial@yahoo.com,

4 yalinzh@nwafu.edu.cn (corresponding author)

 

 

 

doi: https://doi.org/10.11609/jott.4957.11.15.15053-15060  |  ZooBank: urn:lsid:zoobank.org:pub:A21F6937-694F-4EE3-954F-F2070DA7D75E

 

Editor: K.A. Subramanian, Zoological Survey of India, Chennai, India.       Date of publication: 26 December 2019 (online & print)

 

Manuscript details: #4957 | Received 19 March 2019 | Final received 24 October 2019 | Finally accepted 30 November 2019

 

Citation: Naveed, H., K. Sohail, W. Islam & Y. Zhang (2019). A review of the leafhopper tribe Agalliini (Hemiptera: Cicadellidae: Megophthalminae) with a revised key to the known Pakistani genera and species. Journal of Threatened Taxa 11(15): 15053–15060. https://doi.org/10.11609/jott.3891.11.15.15053-15060

 

Copyright: © Naveed et al. 2019. Creative Commons Attribution 4.0 International License.  JoTT allows unrestricted use, reproduction, and distribution of this article in any medium by adequate credit to the author(s) and the source of publication

 

Funding: This study was supported by the Key scientific research project of university-level discipline construction of Leshan Normal University (LZD029), National Natural Science Foundation (31420103911, 31093430) and by the Ministry of Science and Technology of China (2015FY210300, 2005DKA21402).

 

Competing interests: The authors declare no competing interests.

 

Acknowledgements: We express our sincere thanks to John Richard Schrock, Emporia State University, USA and Prof. C.A. Viraktamath University of Agricultural Science, Bangalore, India, for reviewing this manuscript and providing valuable comments. 

 

 

 

Abstract: The tribe Agalliini is reviewed from Pakistan with additional description and illustration of a new record Anaceratagallia pararobusta (Pruthi) 1936.  An updated checklist and keys are given to distinguish all the genera and species of the tribe Agalliini from Pakistan.

 

Keywords: Cicadomorpha, new record, taxonomy.

 

 

 

The leafhopper tribe Agalliini of the subfamily Megophthalminae includes 37 genera and 650 species worldwide (Gonçalves & Dietrich 2009; Viraktamath 2011; Viraktamath et al. 2012).  Most of the species are grass, herb or leguminous crop feeders (Viraktamath 2011) and 13 species are known to be vectors of plant diseases (Wilson & Turner 2010).  Agalliine species can be distinguished from other Cicadellidae by combination of the following characters: head short and broad, usually wider than pronotum; ocelli on face close to dorsal margin; forewing with appendix very narrow or absent; hind wing with four apical cells closed; hind tibial macrosetae on AV starting from midlength of tibia, metabasitarsomere with one or two platellae on distal transverse row of setae; male subgenital plates short, often fused at base and male style usually forked caudally.  Viraktamath (2011) provided a detailed study of the tribe Agalliini from the Oriental and Australian regions and compiled all of the available literature from those regions.  Soon thereafter, Viraktamath et al. (2012) studied the Chinese Agalliini fauna and added four new genera and 10 new species, bringing the Chinese Agalliini to a total of 14 genera and 41 species.

Pruthi (1930, 1936) described two species of Agalliini from Pakistan, namely Agallia robusta and Durgades idiocera from Murree Hills.  Later, Mahmood (1979) reported the presence of the genera Aceratagallia Kirkaldy, Agallia Curtis, Agalliopsis Kirkaldy, Anaceratagallia Zachvatkin, Ceratagallia Kirkaldy, Nehela White, Peragallia Ribaut and Austroagallia Evans, but no material has been found to confirm those identifications.  Viraktamath (1973, 2004) described Austroagallia nitobei (Matsumura) and the new species Durgades sympatrica Viraktamath from Pakistan.  Subsequently, Khatri et al. (2010) studied six species of Agalliini providing their re-descriptions and illustrations.  Later, Viraktamath (2011) transferred all three Pakistani species of Agallia Curtis to Anaceratagallia Zachvatkin.  In this paper, we report a new record of Anaceratagallia pararobusta (Pruthi, 1936) from Pakistan.  The tribe Agalliini comprises three genera and 11 species from Pakistan.  The specimens examined are deposited in the Entomological Museum, Northwest A&F University, Yangling, Shaanxi, China (NWAFU).

 

Checklist of tribe Agalliini from Pakistan

Anaceratagallia aciculate (Horváth, 1894)

Anaceratagallia cuspidate Dlabola, 1957

Anaceratagallia pararobusta (Pruthi, 1936) n. rec.

Anaceratagallia robusta Pruthi, 1930

AustroagalliafagonicaSawai Singh & Gill, 1973

Austroagallia nitobei (Matsumura, 1912)

Austroagallia sarobica (Dlabola, 1964)

Austroagallia robusta Sawai Singh & Gill, 1973

Austroagallia sinuate (Mulsant& Rey, 1855)

Durgades idiocera Pruthi, 1930

Durgades sympatrica Viraktamath, 2004

Note. Detailed descriptions of known genera and species have been already provided by Viraktamath (2011) and hence are not repeated here except for the locality records and remarks.

 

Key to the genera of Agalliini from Pakistan

1.          Hind margin of crown not curved or, if so,

evenly curved behind eyes ……………..…..……..… 2

- Hind margin of crown sinuately curved behind   

eyes; base of aedeagus not sunken into dorsal

apodeme, asymmetrical; anal collar well

developed, with hooks or distally dentate; ocelli

located in rather deep pits...Austroagallia Evans

2.          Pronotum transversely rugose; aedeagus without

subapical finger-like processes surrounding

gonopore ................ Anaceratagallia Zachvatkin

- Pronotum not rugose; aedeagus with

subapical finger-like processes surrounding

gonopore …………………......…Durgades Distant

 

Genus Anaceratagallia Zachvatkin

Anaceratagallia Zachvatkin 1946: 159–161.

Type-species: Cicada venosa Fourcroy, 1785 by original designation.

Distribution: Palaearctic, Afrotropical and Oriental regions

 

Key to the species of Anaceratagallia from Pakistan (modified from Viraktamath 2011)

1.          Anal collar process tridentate; aedeagal

shaft with pair of subapical tooth-like processes 

……………………....……………….………… A. cuspidata

- Anal collar process with one or two subacute

projections distally; aedeagus lacking

processes ........................................................ 2

2.          Anal collar process with ventral subacute

and dorsal acute projections, caudal margin

between them either smooth or crenulated

…………………………………………….....…….. A. robusta

- Anal collar process with single subacute

projection …………............………………………...…. 3

3.          Aedeagal shaft with one subapical tooth on

dorsal margin ……….....…………..……  A. aciculata

- Aedeagal shaft devoid of subapical tooth on

dorsal margin ……....…….……….…  A. pararobusta

 

Anaceratagallia aciculate (Horváth)

Agallia venosa var. aciculate Horváth 1894: 186

Agallia aciculate Vilbaste 1962: 134

Anaceratagallia aciculata; Metcalf 1966: 79; Viraktamath 2011: 16.

Material examined: Not available.

Remarks: Khatri et al. (2010) reported this species from Pakistan and illustrated the male genitalia.

Distribution: Pakistan, Palaearctic region

 

Anaceratagallia cuspidate Dlabola

Anaceratagallia cuspidate Dlabola 1957: 298–299, figs 106–110; Viraktamath 2011: 16, figs 100–105;

Agallia pseudorobusta Rao & Ramakrishnan 1978a: 236–237, figs. 1 a–l.

Material examined: Not available.

Remarks: This species is similar to A. robusta in morphology but can be distinguished by tridentate anal collar process and aedeagal shaft with tooth-like paired projections (Viraktamath 2011).

Distribution: India, Pakistan, Palaearctic region

 

Anaceratagallia pararobusta (Pruthi, 1936)

Image 1A, Figure 1A–C

Agallia pararobusta Pruthi 1936: 104–105, fig. 119, pl. VIII, fig. 4; Anaceratagallia pararobusta Viraktamath, 2011: 17, figs 3, 4, 14, 106–108.

Measurement: Body length: Male. 3.1mm. Vertex width including eyes, 1mm; vertex length, 0.24mm; pronotum width, 0.93mm; pronotum length, 0.5mm; scutellum width, 0.5mm; scutellum length, 0.39mm.

Material examined: Hm035141–Hm035145, 5 males, 10.viii.2017, Pakistan: Azad Jammu & Kashmir: Rawalakot, 33.858°N, 73.765°E, 1638m, coll. Hassan Naveed.

Diagnosis. Vertex with a couple of rectangular black spots obliquely placed. Face Ochraceous, with a few fuscous markings, fronto-clypeus with dark brown spots at lateral margin.  Pronotum with black spots on anterior margin, median longitudinal spot larger than lateral spots on both sides on posterior margin.  Basal triangles of scutellum with two black spots, posterior half brown.  Forewings ochraceous with fuscous veins, cells mostly infuscated.

Male genitalia. Pygofer caudo-ventrally produced into spine-like process of unequal width.  Aedeagal shaft mostly slender with slender dorsal apodeme.  Anal collar with finger-like process, dorsal process directed ventrally.

Female genitalia. Hind margin of seventh sternite broadly concave.

This species closely resembles A. laevis (Ribaut) but differs in aedeagal shaft more slender.

Distribution: India, Pakistan

 

Anaceratagallia robusta (Pruthi, 1930)

Agallia robusta Pruthi 1930: 10–12, text figs 10–12; Agallia delhiensis Rao & Ramakrishnan 1978b: 241, fig. 3 a–l; Agallia robusta Khatri et al. 2010: 36, plate I, Fig. 4; Anaceratagallia robusta Viraktamath 2011: 17, figs 3, 4, 14, 23, 41–44, 109–120, 563, 577, 592.

Material examined: Not available

Remarks: This species is similar to A. laevis (Ribaut) but can be differentiated by the shape of the anal collar process with dorsal finger-like projection, and caudal margin oblique, crenulate to smooth (Viraktamath 2011).

Distribution: India, Pakistan

 

Genus Austroagallia Evans

Austroagallia Evans, 1935: 70. Type-species: Austroagallia torrid Evans, by monotypy.

Peragallia Ribaut, 1948: 59. Type species: Bythoscopus sinuatus Mulsant and Rey, by original designation; synonymy by Le Quesne 1964: 73.

Distribution: Australian, Afrotropical, Oceanic, Oriental and Palaearctic regions

 

Key to the species of Austroagallia from Pakistan

(modified from Viraktamath 2011)

1.  Forewing with brownish reticulate venation; 

crown and pronotum with minute dot-like

marks …................…………..……………... A. robusta

- Forewing venation not reticulated; crown

with prominent spots ……….......………….……… 2

2.          Aedeagal shaft with basal stout, elongate

process ……………..................……..….. A. sarobica

- Aedeagal shaft lacking basal process, or

reduced, tooth-like ………………..………….....……. 3

3.          Aedeagal shaft with laminate process

surrounding gonopore; anal collar hook

spindle-shaped …………………..…….….. A. nitobei

- Aedeagal shaft neither laminately expanded

nor with laminate process or may be slightly

expanded medially …......………………….………… 4

4.          Aedeagus with a pair of finger-like processes

at apex …………………………….....…....  A. fagonica

- Aedeagus without a pair of finger-like processes

at apex ……………………..…………….……. A. sinuata

 

Austroagallia fagonica Singh & Gill, 1973

Image 1B, Figure 1D–J

Austroagallia fagonica Singh & Gill 1973, in Bindra, 1973: 12–14, pl. 3, figs. 1–11; Viraktamath and Sohi 1980: 287, figs 17–21; Viraktamath 2011: 28, Figs. 45–48, 134–140.

Measurement: Body length: Male. 3.8mm. Vertex width including eyes, 1.1mm; vertex length, 0.14mm; pronotum width, 1mm; pronotum length, 0.54mm; scutellum width, 0.6mm; scutellum length, 0.4mm.

Material examined: Hm35266–Hm35271, 6 males, Hm35272–Hm35282, 10 females, 11.viii.2017, Pakistan: Azad Jammu & Kashmir: Rawalakot, 33.858°N, 73.765°E, 1,638m, coll. Hassan Naveed.

Remarks: This species has considerable color variation as described by Viraktamath 2011, but the male genitalia characters are consistent, such as the aedeagal shaft slightly broadened at the basal half (it maybe slender in the same species), with two finger-like processes directed on one lateral side and the anal collar process without a dorsal marginal tooth. These variations are interpreted as intraspecific variation.  Austroagallia fagonica, as discussed by Viraktamath and Sohi (1980) resembles the Egyptian species Austroagallia canopus Linnavuori (1969) from which it differs in having a simple anal collar process compared to the branched process found in A. canopus.

Distribution: India, Pakistan.

 

Austroagallia nitobei (Matsumura, 1912)

Agallia nitobei Matsumura 1912: 316;

Austroagallia nitobei (Matsumura), Viraktamath 1973: 307–308, figs 1, 2; Viraktamath & Sohi 1980: 285, figs. 1–4; Viraktamath 2011: 29, Figs. 141–143.

Material examined: Not available.

Remarks: Viraktamath (1973) recognized variation in populations of this species from Sri Lanka, Thailand, Vietnam, Pakistan and India.  This species is similar to the Palaearctic species A. avicula (Ribaut) in external features but can be distinguished by the aedeagus with a basal fold-like tubercle, shaft slender, and apical process elongate and oval with a crenulated lower border (Viraktamath 2011).

Distribution: India, Pakistan, Sri Lanka, China (Taiwan), Thailand, Vietnam.

 

Austroagallia robusta Singh & Gill in Bindra, 1973

Austroagallia robusta Singh & Gill 1973, in Bindra 1973: 14–15, pl 4: figs 1–11; Viraktamath & Sohi 1980: 287, figs 11–16; Khatri et al. 2010: 35, pl 1b, fig. 2; Viraktamath 2011: 33, Figs. 36, 148–151.

Material examined: Not available.

Remarks: The aedeagus of A. robusta is about the same as that of the A. sinuata, but it differs in having the anal collar process slightly stout and with a curve. It can also be differentiated from other species of Austroagallia by the pair of very small speckle-like spots on the crown and pronotum and reticulate piceous venation on the disc of the corium (Viraktamath 2011).

Distribution: India, Pakistan.

 

Austroagallia sarobica (Dlabola, 1964)

Peragallia sarobica Dlabola 1964: 246;

Austroagallia sarobica (Dlabola): Dlabola 1972: 218, generic placement; Bindra 1973: 4; Viraktamath & Sohi 1980: 289, figs 29–33; Khatri et al. 2010: 35, pl 1c, Fig. 3; Viraktamath 2011: 34, Figs. 152–155.

Material examined: Not available

Remarks: This species is similar to A. robusta in crown and pronotum having round spots, but differs in having the male genitalia with anal collar tridentate, aedeagal shaft with a basal process making it strongly asymmetrical, and forewings without subdivided anteapical cells (Viraktamath 2011).

Distribution: India, Pakistan, Afrotropical and Palearctic regions

 

Austroagallia sinuata (Mulsant & Rey, 1855)

Image 1C–E, Figure 2A–C

Bythoscopus sinuatus Mulsant & Rey 1855: 222;

Agallia quadrisignata Flor 1861: 557, synonymy by Fieber 1868: 462;

Agallia homeyeri Kirschbaum 1868: 32, synonymy by Fieber 1872: 32;

Agallia fieberi Vismara 1878: 41, synonymy by Löw 1885: 346;

Austroagallia afganistanensis Rao, Ramakrishnan & Ghai 1979: 655–656;

Austroagallia sinuate Khatri et al. 2010: 35, pl 1a, Fig. 1; Viraktamath 2011: 34, Figs. 24, 49–51, 156–158.

Measurements. Body length: Male. 3mm.  Vertex width including eyes, 0.99mm; vertex length, 0.1mm; pronotum width, 0.85mm; pronotum length, 0.44mm; scutellum width, 0.6mm; scutellum length, 0.4mm.

Material examined: Hm032752–Hm032754, 3 males, Hm032751, 1 female, 4.viii.2016, Pakistan: Khyber Pakhtunkhwa, Abbottabad, 34.168°N, 73.221°E, 1,256m, coll. Hassan Naveed.

Remarks: This species is widely distributed in the southern Palaearctic, Afrotropical and western Oriental and Neotropical regions.  It shows great variation in the structure of both the anal collar process and aedeagus but usually is without reticulate venation of the forewing.

Distribution: India, Pakistan, Afrotropical, Palearctic regions and Neotropical regions.

 

Genus Durgades Distant

Durgades Distant 1912: 608; 1916: 237; Viraktamath 2004: 365–366.

Type-species: Durgades nigropictus Distant, by original designation.

Distribution: Foot hills of the Himalayas.

 

Key to the species of Durgades (modified from Viraktamath 2011)

- Aedeagal shaft with four finger-like processes

surrounding gonopore ….…..….….. D. idiocera

- Aedeagal shaft with three finger-like subapical

processes …………..............………..… D. sympatrica

 

Durgades idiocera Pruthi, 1930

Durgades idiocera Pruthi 1930: 13–15, figs. 15–17, pl. II, figs. 1, 1a, 2; Viraktamath 2004: 369–370, figs 24–25; Viraktamath 2011: 46, Figs. 196–197.

Material examined: Not available.

Remarks: This species was collected by Pruthi (1930) from Murree Hills.  This species can be distinguished from the other Durgades species in lacking a cross vein between the claval veins of the forewings and having the aedeagal shaft with three curved finger-like processes and one straighter process surrounding the gonopore (Viraktamath 2011).

Distribution: Pakistan.

 

Durgades sympatrica Viraktamath, 2004

Image 1F–I, Figure 2D–J

Durgades sympatrica Viraktamath 2004: 374, Figs. 57–65; Viraktamath 2011: 49, Figs. 229–237.

Measurements. Body length: Male. 3.2mm. Vertex width including eyes, 1.4mm; vertex length, 0.1mm; pronotum width, 1.1mm; pronotum length, 0.5mm; scutellum width, 0.8mm; scutellum length, 0.59mm.

Material examined: Hm35291–Hm35298, 8 males, Hm35288–Hm35290, 3 females, 25.viii.2017, Pakistan, Punjab, Murree Hills, 33.907°N, 73.394°E, 2291m, coll. Hassan Naveed.

Remarks: This species closely resembles D. idiocera in coloration, external appearance and markings but can be readily distinguished by the three subapical aedeagal processes, of which one is distally bilobed with a serrated margin.  The species can be brachypterous to macropterous.

Distribution: Pakistan.

 

 

For figures & image - - click here

 

 

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