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A remarkable new genus and species of Erythroneurini (Hemiptera: Cicadellidae: Typhlocybinae) from China.

Erythroneurini, the largest tribe in the subfamily Typhlocybinae, is distributed in all 6 faunal regions, and worldwide comprises 193 genera and more than 1,840 species. In China, 50 genera and more than 280 species have been reported (Dmitriev 2016). In the course of studying the Chinese Erythroneurini, a new genus and species, Dentaneura henanensis gen. et sp. nov., was discovered and is described in this paper. A key to the genera of the tribe Erythroneurini in China is provided.

Materials and Methods

The type specimens were collected by sweep net in Aug 2008 in the Baiyun Mountain scenic area in Henan Province. Morphological terminology used in this work follows Dietrich (2005) and Song & Li (2013). Habitus photos were taken using a KEYENCE VHX-2000 digital microscope. The body measurements are from the apex of vertex to the tip of forewing. An Olympus SZX7 dissecting microscope was used for viewing and an Olympus CX41 stereoscopic microscope for drawing. The type-series of the new species were deposited in the Institute of Entomology, Guizhou University, Guiyang, China (GUGC).

SYSTEMATICS

Dentaneura gen. nov.

Type species: Dentaneura henanensis sp. nov. DIAGNOSIS

Head narrower than pronotum. Crown fore margin weakly produced medially, with pair of preapical spots. Face with frontoclypeus long and narrow, anteclypeus relatively broad. Pronotum with medial markings. Scutellum with basal triangles obvious. Forewing long and narrow, clavus with continuous vitta parallel to suture.

Male: Second sternal apodemes (2S) bladelike, extending 4th sternite.

Pygofer side broad, with single large dorsal macroseta, hind margin rounded, basolateral area without setae in distinct group, microsetae and microtrichia near caudal margin of lobe well developed. Pygofer dorsal appendage movably articulated, bifurcate near base, extended beyond pygofer apex, slightly curved downward in lateral view. Ventral appendage absent. Subgenital plate (Fig. 8) short, not extended to apex of pygofer lobe, expanded at subbase, with 3 macrosetae along upper margin subbasally and 4 macrosetae forming row on lateral surface, upper marginal microsetae absent, with 2 strong teethlike setae apically, some microsetae scattered on distal and ventral area. Style (Fig. 9) long and slender, footlike apically. Preapical lobe small but distinct, hooklike at apex. Connective (Fig. 12) Y-shaped, central lobe present. Aedeagus (Fig. 11) simple, with pair of short processes apically. Aedeagal shaft equal to or slightly shorter than preatrium. Preatrium expanded at base. Dorsal apodeme small in lateral view. Gonopore terminal, ventrad.

BIOLOGY

Species in this tribe feed on trees, shrubs, and grasses. Some species harm economic crops including apple, grape, cherry, hawthorn, pear, peach, mulberry, maple, and Lonicera. The body is small, the forewing and head often have bright coloration and distinct patterns.

DISTRIBUTION

Palearctic region.

NOTES

The new genus resembles Arboridia (Zachvatkin 1946) in the following morphological characteristics: crown fore margin weakly produced medially, with paired preapical spots, scutellum with dark basal triangles. It is also somewhat similar to Tautoneura Anufriev, 1969 in the Y-shaped connective, with median anterior lobe, but can be distinguished from the formers by the pygofer with 1 dorsal macroseta, without macrosetae in group at basal lower angle; the subgenital plate very short, with 3 macrosetae at upper margin subbasally and 2 robust teethlike setae at apex, some rigid microsetae along upper margin disappeared; connective median anterior lobe present.

ETYMOLOGY

The generic epithet is derived from the noun "denta" and the suffix "-neura" in view of the subgenital plate with 2 strong teethlike setae at apex. The gender is feminine.

TYPE LOCALITY

China: Henan Province, Mt. Baiyun.

DESCRIPTION

Body length: [male], 3.1-3.2 mm.

Vertex (Figs. 1 and 6) brownish yellow, with pair of milky irregular preapical spots and with longitudinal milky stripes along inner sides of eyes. Eyes (Figs. 1, 2, 3) brown black. Pronotum (Figs. 1, 6) whitish yellow, with median and posterior margin dark. Face (Fig. 3) brown yellow, frontoclypeus long and narrow, with 2 large milky white markings apically; anteclypeus broad, whitish yellow. Forewing (Figs. 1 and 4) pale, with 1 continuous light brown vitta parallel to clavus suture.

Male: Second sternal apodemes (2S) (Fig. 5) bladelike, extended to 4th sternite.

Pygofer side (Fig. 7) broad, with 1 dorsal macroseta, numerous microtrichia scattered at caudal area. Pygofer dorsal appendage movably articulated, bifurcate at base, dorsal branch longer than ventral branch, extended beyond apex of lobe. Subgenital plate (Fig. 8) with 3 marginal macrosetae at base, 4 macrosetae on lateral surface, and 2 robust teethlike setae at apex. Style (Fig. 9) with apex inverted-footlike, preapical lobe small, with apex hooklike. Connective (Fig. 12) Y-shaped, with stem truncate apically, central lobe much short than lateral arms. Aedeagus (Figs. 10 and 11) with paired short apical processes, preatrium little longer than aedeagal shaft, dorsal apodeme small in lateral view, gonopore apical on ventral surface. Female: Unknown.

MATERIAL EXAMINED

HOLOTYPE: 1 male; CHINA: Henan Prov., Mt. Baiyun (33.6[degrees] N, 111.83[degrees] E), 1,300-1,400 m, 17-VIII-2008, coll. Yuehua Song and Can Li. PARATYPE: 1 male, same data as Holotype.

DISTRIBUTION

China (Henan Province).

DIAGNOSIS

The new species can be distinguished from other species with its subgenital plate extremely short, with 3 macrosetae along upper margin sub-basally and 2 strong toothlike setae apically; pygofer lobe with a single dorsal macroseta.

ETYMOLOGY

The specific name refers to the type-locality.

Acknowledgments

The study was partly supported by the Key Project in the National Key Technology R&D Program of China during the Twelfth Five-Year Plan Period (2011BAC09B01-08), the National Natural Science Foundation of China (31301866), the Special Foundation for the Excellent Youth Science and Technology Scholars of Guizhou Province (Qian Ke He Ren Zi, No. [2015] 17), the Natural Science Research Project of Education Department of Guizhou Province (Qian Jiao He KY Zi, No. [2015] 357), and the Chinese Government Scholarship Sponsoring Study Abroad (201308525113).

References Cited

Anufriev GA. 1969. New and little known leafhoppers of the subfamily Typhlocybinae from the Soviet Maritime Territory (Homoptera, Auchenorrhyncha). Acta Faunistica Entomologica Musei Nationalis Pragae 13: 186-188.

Dietrich CH. 2005. Keys to the families of Cicadomorpha and subfamilies and tribes of Cicadellidae (Hemiptera: Auchenorrhyncha). Florida Entomologist 88: 502-517.

Dmitriev DA. 2016. Auchenorrhyncha database search. Dmitriev.speciesfile.org. Available from: http://dmitriev.speciesfile.org (last accessed 23 May 2016).

Song YH, Li ZZ. 2013. Some new species and new record of the genus Arboridia Zachvatkin (Hemiptera: Cicadellidae: Typhlocybinae) from six provinces of China. Zootaxa 3613: 229-244.

Song YH, Li ZZ. 2014. Erythroneurini and Zyginellini from China (Hemiptera: Cicadellidae: Typhlocybinae). Guizhou Science and Technology Publishing House, Guiyang, China.

Zachvatkin AA. 1946. Studies on the Homoptera of Turkey. I-VII. Transactions of the Royal Entomological Society of London 97: 149-176.

YueHua Song (1,2), *, ZiZhong Li (1) *, and RenHuai Dai (1)

(1) Guizhou University, Institute of Entomology, Guiyang, Guizhou, 550025, China; E-mail: songyuehua@163.com (YH. S.), lizizhong38@163.com (ZZ. L.), dairenhuai@yahoo.com.cn (RH. D.)

(2) Guizhou Normal University, School of Karst Science, Guiyang, Guizhou, 550001, China

* Corresponding authors; E-mail: songyuehua@163.com (YH. S.), lizizhong38@163.com (ZZ. L.)

Caption: Figs. 1-12. Dentaneura henanensis Song, Li & Dai sp. nov. (male). 1. Habitus, dorsal view; 2. habitus, lateral view; 3. face; 4. wings (forewing and hind wing); 5. abdominal apodemes; 6. head and thorax, dorsal view; 7. pygofer, lateral view; 8. subgenital plate; 9. style; 10. aedeagus, lateral view; 11. aedeagus, ventral view; 12. connective.

Updated Key to Genera of Erythroneurini from China
(Modified from Song & Li 2014)

1.--      Hind wing submarginal vein reduced, not                      2
          fused with Cu1 vein

1'.--     Hind wing submarginal vein fused with                        3
          Cu1 vein

2.--      Head, thorax, and forewing with                        Diomma
          numerous spots and markings; pygofer              Motschulsky
          with dorsal appendage only

2'.--     Head, thorax, and forewing without                    Watara
          spots and markings; pygofer with dorsal           Dworakowska
          and ventral appendage

3.--      Anal tube with hooks or processes                            4

3'.--     Anal tube without hooks or processes                       7'

4.--      Pygofer lobe with several enlarged                           5
          setae at basolateral angle

4'.--     Pygofer lobe without several enlarged                        7
          setae at basolateral angle

5.--      Pygofer microtrichia well developed                  Raabeina
                                                            Dworakowska

5'.--     Pygofer microtrichia absent or                               6
          inconspicuous

6.--      Pygofer ventral appendage absent                     Gladkara
                                                            Dworakowska

6'.--     Pygofer ventral appendage present             Thailus Mahmood

7.--      Pronotum with single diamond-shaped                          8
          impression medially

7'.--     Pronotum without diamond-shaped                             11
          impression medially

8.--      Pygofer lobe with 1-2 dorsal macrosetae              Sanatana
                                                            Dworakowska

8'.--     Pygofer lobe without dorsal macrosetae                       9

9.--      Aedeagus fused to connective                   Andrabia Ahmed

9'.--     Aedeagus articulated to connective                          10

10.--     Pygofer lobe with appendage                      Thaia Ghauri

10'.--    Pygofer lobe without appendage                       Niedoida
                                                            Dworakowska

11.--     Pygofer lobe with sparse long fine                          12
          setae

11'.--    Pygofer lobe without sparse long fine                Kaukania
          setae                                             Dworakowska

12.--     Forewing with irregular red dots                   Tautoneura
                                                               Anufriev

12'.--    Forewing without irregular red dots                         13

13.--     Pygofer without dorsal appendage             Thapaia Dmitriev
                                                             & Dietrich

13'.--    Pygofer with dorsal appendage                               14

14.--     Pygofer dorsal appendage movably                            15
          articulated at base

14'.--    Pygofer dorsal appendage not movably                Gambialoa
          articulated at base                               Dworakowska

15.--     Pygofer with oblique dorsolateral           Kapsa Dworakowska
          internal ridge

15'.--    Pygofer without oblique dorsolateral                        16
          internal ridge

16.--     Pygofer lobe microtrichia well                        Chagria
          developed                                         Dworakowska

16'.--    Pygofer lobe microtrichia disappeared              Frutioidia
          or unobvious                                       Zachvatkin

17.--     Forewing 4th apical cell extended to                        18
          distal margin

17.--     Forewing 4th apical cell not extended                       22
          to distal margin

18.--     Style apex bifurcate                          Irenaneura Cao,
                                                          Huang & Zhang

18'.--    Style apex unbranched                                       19

19.--     Pygofer inner side with 2 pairs of well       Variolosa Cao &
          pigmented separate lobes                                Zhang

19'.--    Pygofer inner side without lobes                           -20

20.--     Preatrium of aedeagus with single           Singapora Mahmood
          large atrial process

20'.--    Preatrium of aedeagus without atrial                        21
          process

21.--     Pygofer lobe with a strong appendage at         Fractata Song
          caudal margin medially                                   & Li

21'.--    Pygofer lobe without any appendage at              Dentaneura
          caudal margin                                       gen. nov.

22.--     Pygofer basolateral with macrosetae in                      23
          distinct group

22'.--    Pygofer basolateral without macrosetae                      26
          in group

23.--     Apex of scutellum without black spot                        24

23'.--    Apex of scutellum with single black                         25
          spot

24.--     Style apex truncate                                   Coloana
                                                            Dworakowska

24'.--    Style apex slender                                   Ossuaria
                                                            Dworakowska

25.--     Subgenital plate with lamelliform                Plumosa Sohi
          process on inner lateral surface near
          apex and several long white fine setae
          at apex

25'.--    Subgenital plate without lamelliform                  Davmata
          process on inner lateral surface near             Dworakowska
          apex, with several short stout setae at
          apex

26.--     Hind wing with truncate apex                                27

26'.--    Hind wing with rounded apex                                 29

27.--     Hind wing with RA vein                          Erythroneura
                                                            Dworakowska

27'.--    Hind wing without RA vein                                   28

28.--     2S abdominal apodemes small, narrow,             Gredzinskiya
          not exceeding 3rd sternite                        Dworakowska

28'.--    2S abdominal apodemes large, broad,              Erythroneura
          exceeding 3rd sternite                                  Fitch

29.--     Pygofer with dorsal and ventral                             30
          appendage

29'.--    Pygofer with dorsal or ventral                              31
          appendage only or without appendage

30.--     Pygofer lobe with 1 or more                 Salka Dworakowska
          dorsal macrosetae

30'.--    Pygofer without dorsal macorsetae          Alnetoidia Dlabola

31.--     Crown fore margin weakly produced,                          32
          rounded apically

31'.--    Crown fore margin strongly produced,                        36
          angulate medially

32.--     Pronotum with diamond-shaped                                33
          impressions medially

32'.--    Pronotum without diamond-shaped                             34
          impressions medially

33.--     Pygofer without dorsal appendage             Pseudothaia Kuoh

33'.--    Pygofer with dorsal appendage                     Matsumurina
                                                            Dworakowska

34.--     Scutellum with single black medial spot       Elbelus Mahmood

34'.--    Scutellum without single black medial                       35
          spot

35.--     Style preapical lobe cheliform                      Rufitidia
                                                            Dworakowska

35'.--    Style preapical lobe lamellalike                       Yakuza
                                                            Dworakowska

36.--     Style apex long and slender,                                37
          tapering apically

36'.--    Characters not as above                                     40

37.--     Pygofer often with 1 or more dorsal                   Kabakra
          macrosetae                                        Dworakowska

37'.--    Pygofer often without dorsal macrosetae                     38

38.--     3S apodemes present and distinctive             Saccata Cao &
                                                                  Zhang

38'.--    3S apodemes absent                                          39

39.--     Connective central lobe absent                         Kusala
                                                            Dworakowska

39'.--    Connective central lobe present                     Mitjaevia
                                                            Dworakowska

40.--     Pygofer with dorsal appendage                               41

40'.--    Pygofer without dorsal appendage                            42

41.--     Pygofer with single macroseta arising          Laciniata Song
          from caudal margin medially                              & Li

41'.--    Pygofer without macroseta arising from          Duanjina Kuoh
          caudal margin

42.--     Connective with central lobe                                43

42'.--    Connective without central lobe                             46

43.--     Pygofer lobe with numerous, conspicuous         Zygina Fieber
          long fine setae

43'.--    Pygofer lobe without numerous,                              44
          conspicuous long fine setae

44.--     Pygofer with oblique dorsolateral                           45
          internal ridge

44'.--    Pygofer without oblique dorsolateral             Lectotypella
          internal ridge                                    Dworakowska

45.--     Vertex without spots                                   Motaga
                                                            Dworakowska

45'.--    Vertex often with pair of preapical              Empoascanara
          spots or large median apical spot                     Distant

46.--     Style apex with 3 points                                    47

46'.--    Style apex truncate and expanded                            48

47.--     Forewings with continuous zigzag                   Ziczacella
          pattern                                              Anufriev

47'.--    Forewings without continuous zigzag                 Arboridia
          pattern                                            Zachvatkin

48.--     Pygofer with macrosetae at basolateral                      49
          angle

48'.--    Pygofer without macrosetae at                         Seriana
          basolateral angle                                 Dworakowska

49.--     Aedeagus with pair of long atrium              Qadria Mahmood
          processes; hindwing without RA vein

49'.--    Aedeagus without atrium processes;                 Anufrievia
          hindwing with RA vein                             Dworakowska

Dentaneura henanensis Song, Li & Dai sp. nov. (Figs. 1-12)


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Author:Song, YueHua; Li, ZiZhong; Dai, RenHuai
Publication:Florida Entomologist
Article Type:Report
Geographic Code:9CHIN
Date:Sep 1, 2016
Words:2119
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