Isporisini Fennah, 1982

Constant, Jérôme, 2015, First record of the tropiduchid planthopper genus Sogana Matsumura, 1914 from Cambodia with one new species (Hemiptera: Fulgoromorpha: Tropiduchidae), Belgian Journal of Entomology 82, pp. 1-11 : 1-11

Tribe Isporisini Fennah, 1982

Genus Sogana Matsumura, 1914 FLOW : https://www.hemiptera-databases.org/flow/?page=explorer&db=flow&lang=en&card=taxon&rank=genus&id=8083

SPECIES INCLUDED AND TYPE LOCATION

Sogana chartieri sp. nov. ( Cambodia)

Sogana clara Liang & Wang, 2008 ( Laos)

Sogana condaoana Constant & Pham, 2013 ( Vietnam)

Sogana cucphuongana Constant & Pham, 2013 ( Vietnam)

Sogana extrema Melichar, 1914 ( Myanmar)

Sogana floreni Constant, 2010 (Borneo)

Sogana hopponis Matsumura, 1914 (Taiwan)

Sogana longiceps Fennah, 1978 ( Vietnam)

Sogana pseudohopponis Liang & Wang, 2008 ( Laos)

Sogana robustocarina Liang & Wang, 2008 (Borneo)

Sogana stimulata Melichar, 1914 (Mentawai Islands)

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Sogana chartieri sp. nov.

urn:lsid:zoobank.org:act:589C72D2-1E83-494D-8FBF-F9F1754B2A02

Figs 1–5

ETYMOLOGY. The species epithet is a patronym dedicated to Mr Gerard “Gee” Chartier (Tatai, Cambodia) who collected the type specimen, in acknowledgment for his involvment in the progress of the knowledge of the Cambodian entomofauna.

TYPE MATERIAL. CAMBODIA: holotype ♂: Coll. I . R. Sc.N.B., Cambodia, Koh Kong prov., Tatai , 11°35’13”N 103°05’50”E, 6.IX.2016, leg. G. Chartier, I.G.: 33.551 ( RBINS) . Dissected, genitalia in glycerine; right hind wing mounted, glued on cardboard.

DIAGNOSIS. The species can be separated from the other Sogana species by the combination of the following characters:

1. median carina of vertex reaching anterior margin, furcate on basal 1/3 and reaching posterior margin.

2. frons with five red transverse fasciae interrupted in the middle and median carina interrupted before the basal and apical margins

3. clypeus black-brown with large central yellow-brown marking.

4. tegmina with 13 apical cells.

5. anal tube elongate and narrow with apex more or less rounded.

6. aedeagus with 2 pointed processes dorsally; processes without additional teeth.

7. periandrium ventrally with a broad, hook-shaped and apically rounded process.

Additionally, (1) in the key proposed by LIANG & WANG (2008) used with the addendum provided by CONSTANT (2010), the species runs to S. clara Liang & Wang, 2008 , from which it can be separated by the more elongate vertex (LV/BV = 0.75; in S. clara LV /BV = 0.82) and frons (LF/BF = 1.6; in S. clara LF /BF = 1.49), by the shape of the anal tube more or less rounded apically (obliquely cut in S. clara ) and by the absence of small teeth on the dorsal processes of the aedeagus (with many small teeth apically in S. clara ); (2) in the key proposed by CONSTANT & PHAM (2013), the species runs either to S. cucphuongana Constant & Pham, 2013 or S. condaoana Constant & Pham, 2013 from which it can be separated by the number of apical cells of tegmina (13 in S. chartieri ; 18 or more in both other species); the number of transverse red bands on frons (5 in S. chartieri ; 7 in both other species) and the dorsal processes of the aedeagus straight, pointed, without additional teeth (numerous additional teeth in S. condaoana ; processes strongly furcate in S. cucphuongana ).

DESCRIPTION.

Measurements and ratios: LT: ♂ (n = 1): 7.7 mm. LTg/BTg = 3.0; LV/BV = 0.75; LF/BF = 1.6.

Head: ( Fig. 1 G–I ) vertex elongate with apex rounded in dorsal view; latero-discal carinae oblique, well marked, joining lateral margin at half of eye length; vertex excavate between carinae; median carina broad and furcate on basal third; vertex pale yellow-brown with elongate dark brown marking at base of anterolateral depression and angular dark brown marking at laterobasal angles of vertex; posterior face of head with two black-brown rather large spots. Frons elongate, straight in lateral view; median carina extending to apex of clypeus but weakly marked on short distance near base and before anterior margin; pale yellow-brown with 5 transverse red bands interrupted in middle; anterior margin of frons with 3 black-brown patches. Genae pale yellow-brown with curved dark brown marking at anterodorsal angle. Clypeus black brown with large central pale yellow-brown patch. Labium pale yellow, reaching hind coxae.

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7 Thorax: ( Fig. 1 A–D, G–I ) pronotum pale yellow-brown with irregular brown spots on disc, black impressed point on disc, on each side of median carina and brown patch along anterior margin of lateroventral lobes; posterior margin emarginate; median carina weakening near anterior margin. Mesonotum pale yellow-brown with median and discal carinae joining anteriorly and 4 brownish spots along posterior margin; scutellum slightly darker. Tegulae pale yellow-brown. Lateral pleura of prothorax with black band prolongating the black area on sides of clypeus. Lateral pleura of metathorax with brown markings.

Tegmina: ( Fig. 1 E ) elongate, subhyaline; black-brown marking near base of postcostal cell, extending in a brown patch at base of radial cell; apex of radial, median and cubital cells narrowly dark brown; elongate black-brown marking at apical angle of clavus; apex of PCu with dark brown marking. Veins ScP+R and MP not forked before nodal line; CuA forked once before nodal line. 7 subapical and 13 apical cells; apical cells 6–10 infuscate on distal 2/3;

Hind wings: ( Fig. 1 F ) hyaline with veins mostly brown; postclaval margin emarginate and infuscate along vein CuP.

Legs: ( Fig 1 A–D ) pale yellow-brown with base of procoxae dark brown; base and subapical ring on pro- and mesofemora; pro- and mesotibiae with base brown; metafemora with longitudinal dark brown markings; metatibiae dark brown near base; tibiae III with 3 lateral and 7 apical spines; first hind tarsomere with 8 apical spines. Metatibiotarsal formula: (3) 7/8/2.

Abdomen: greenish yellow with brown markings; terminalia dark brown.

Genitalia ♂: ( Fig. 2 ) pygofer narrow with posterior margin roundly projecting on dorsal 2/3; anterior and posterior margins sinuate in lateral view ( Fig. 2 A–B ); posterior margin abruptly and deeply notched dorsally. Anal tube ( Fig. 2 A–B, D ) elongate and narrow, slightly more developed to the right side in dorsal view, with sides subparallel and apex more or less rounded; slightly sinuate in lateral view; anal column at about half length; gonostyli ( Fig. 2 A–D ) very elongate, laterally compressed, with apex narrowly rounded; 3 hooked processes on dorsal margin slightly posteriorly to half length. Aedeagus ( Fig. 2 E–H ) elongate and narrow, with 2 pointed elongate processes dorsally projecting dorso-anteriorly ( Fig. 2 E–I ); processes dorsoventrally flattened; left process shorter and curved to the right, right process longer and stronger, curved to the left and surpassing lateral margin of aedeagus in dorsal

8 view ( Fig. 2 G ); subapical ear-shaped process dorsally ( Fig. 2 E–F ); periandrium ( Fig. 2 I ) strongly asymmetrical, with left side elongate ventrally, strongly curved to the right in a dorsoventrally flattened, broad hook rounded at apex.

BIOLOGY. The specimen was collected sitting on the wall of a small house ( Fig. 3 ) surrounded by secondary forest. The vegetation at this place is mostly shrubs and small trees, with a rather dense ground cover ( Fig. 4 ).

DISTRIBUTION. Cambodia: Koh Kong Province ( Fig. 5).

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Figures

Fig. 1. Sogana chartieri sp. nov., holotype ♂. A, habitus dorsal view. B, habitus, ventral view. C, habitus, normal view of frons. D, habitus, lateral view. E, right tegmen. F, right posterior wing. G, frons, normal view. H, head and thorax, lateral view. I, head and thorax, dorsal view.

Fig. 2. Sogana chartieri sp. nov., holotype ♂. A, pygofer, anal tube and gonostyli, left lateral view. B, pygofer, anal tube and gonostyli, right lateral view. C, left gonostylus, dorsal view. D, pygofer, anal tube and gonostyli, dorsal view. E, aedeagus, right lateral view. F, aedeagus, left lateral view. G, aedeagus, dorsal view. H, aedeagus, left posterolateral view. I, aedeagus, ventral view. An: anal tube – cn: connective – dpa: dorsal process of aedeagus – esp: ear-shaped process of aedeagus – G: gonostylus – hsp: hook-shaped process of periandrium – pe: priandrium – Py: pygofer.

Fig. 3. Sogana chartieri sp. nov., holotype ♂ in Tatai, 6.IX.2016 (photograph © G. Chartier). A, lateral view. B, dorsal view.

Fig. 4. Sogana chartieri sp. nov., habitat in Tatai (photograph © G. Chartier).