Dixamflata petri, Stroiński & Malenovský & Świerczewski, 2016

Stroiński, Adam, Malenovský, Igor & Świerczewski, Dariusz, 2016, Two new genera offlatid planthoppers from Socotra island (Hemiptera: Fulgoromorpha: Flatidae), Acta Entomologica Musei Nationalis Pragae 56 (2), pp. 461-489 : 466-475

publication ID

https://doi.org/ 10.5281/zenodo.4503913

publication LSID

lsid:zoobank.org:pub:AAEC43ED-0925-499A-A47A-CDC3DEE7CB0FM

DOI

https://doi.org/10.5281/zenodo.4602443

persistent identifier

https://treatment.plazi.org/id/03928337-3035-5D65-FE63-FABEFC30FB37

treatment provided by

Felipe

scientific name

Dixamflata petri
status

sp. nov.

Dixamflata petri View in CoL sp. nov.

( Figs 1–52 View Figs 1–7 View Figs 8–13 View Figs 14–19 View Figs 20–22 View Figs 23–28 View Figs 29–34 View Figs 35–39 View Figs 40–45 View Figs 46–52 )

Type locality. Yemen, central Socotra, southern slopes of the Hagher mountains on the edge of the Dixam plateau, Tudhen, 12°32.7′N, 53°59.9′E, 1135 m a.s.l. ( Fig. 75 View Figs 75–76 ).

Type material. HOLOTYPE: ♁, “ YEMEN, SOCOTRA Island / Dixam Plateau , Tudhen / 12°32.7′N, 53°59.9′E, 1135 m / montane shrubland with / Commiphora planifrons , 22.vi.2012 // SOCOTRA expedition 2012 / I. Malenovský, P. Kment, / J. Bezděk, J. Hájek, V. Hula / J. Niedobová & L. Purchart leg. // HOLOTYPE / Dixamflata / petri sp. nov. / det. A. Stroiński, I. Malenovský / & D. Świerczewski 2016” ( MMBC, dry-mounted, abdomen detached, dissected and stored in plastic vial with glycerol under the specimen) GoogleMaps . PARATYPES: 13 ♁♁ 4 ♀♀, same data as holotype (6 ♁♁ 2 ♀♀ MMBC, 3 ♁♁ 1 ♀ MZPW, 4 ♁♁ 1 ♀ NMPC) GoogleMaps ; 1 ♁, “ YEMEN, SOCOTRA Island / Hagher Mts., wadi Madar / 12°33.2′N, 54°00.4′E, 1170 m / montane shrubland with / Cephalocroton socotranus , 18.vi.2012 // SOCOTRA expedition 2012 / I. Malenovský, P. Kment, / J. Bezděk, J. Hájek, V. Hula / J. Niedobová & L. Purchart leg. ( MMBC); GoogleMaps 1 ♁, “ YEMEN, SOCOTRA Island, Zemhom area [= Aloove village env., see BEZDĚK et al. (2012)], 270-350m, N 12°30′58″ E 54°06′39″, 3.-4.ii.2010, at light, L. Purchart & J. Vybiral leg.” ( MMBC); GoogleMaps 1 ♁ 1 ♀, “ YEMEN, SOCOTRA Island, Scant area, 1300-1500m, N 12°34′33″ E 54°01′31″ E, 31.i.-1.ii.2010, L. Purchart ” ( MMBC). Each paratype bearing “ PARATYPE / Dixamflata / petri sp. nov. / det. A. Stroiński, I. Malenovský / & D. Świerczewski 2016” label GoogleMaps .

Diagnosis. The only species in the genus.

Description. Measurements. Total length 3.1–3.8 mm. Vertex: A/B 2.50–3.64. Frons: C/ E 0.58 –0.71; D/ E 0.88 –1.02. Pronotum: F/B 1.43–2.45. Mesonotum: G/F 1.33–1.80; G/B+F 0.90–1.11; G/H 0.50–0.62. Tegmina: I/J 1.62–2.09.

Coloration. General coloration light brown, mottled darker brown ( Figs 1–7 View Figs 1–7 ); darker spots concentrating and fusing into dark bands in some specimens, especially on tegmen subapically and apically, along sutural margin of clavus and costal margin ( Fig. 3 View Figs 1–7 ), as well as on head and thorax along dorsal midline ( Figs 3, 4 View Figs 1–7 ). Legs ochreous, outer surface of tibiae mottled dark brown. Male abdomen dark yellow to brown, terminalia lighter than abdomen, ochreous; female abdomen light brown.

Structure. Head. Vertex slightly widening anterior to eyes; disc weakly depressed in median portion ( Figs 4 View Figs 1–7 , 12, 13 View Figs 8–13 ). Frons with median carina distinct only in median portion ( Figs 15, 16 View Figs 14–19 ). Clypeus weakly convex ( Figs 16, 17 View Figs 14–19 ).

Thorax. Pronotum with median ridge weakly visible, incision of anterior margin shallowly depressed ( Figs 12, 13 View Figs 8–13 ).

Male genitalia. Process of periandrium well-sclerotized, long, oriented ventro-basad with apical part bent posteriorly ( Fig. 36 View Figs 35–39 ). Lateral lobe of periandrium less chitinized than ventral periandrium. Ventral and dorsal margins of aedeagus denticulate ( Fig. 38 View Figs 35–39 ).

Female terminalia and genitalia. Pregenital sternite with anterior margin weakly arcuate and posterior margin shallowly concave ( Fig. 46 View Figs 46–52 ). Gonoplac with row of larger teeth and row of smaller teeth ( Figs 42, 45 View Figs 40–45 , 47 View Figs 46–52 ). Gonapophysis VIII with teeth of ventral margin placed more distally than teeth of dorsal margin ( Fig. 48 View Figs 46–52 ). Bursa copulatrix kidney-shaped, cells with weakly sclerotized central areas with microsculpture on the surface ( Fig. 51 View Figs 46–52 ). Spermatheca with ductus receptaculi ribbed, with narrow basal part and widened apical part; diverticulum ductus smooth, widening apicad ( Fig. 52 View Figs 46–52 ).

Etymology. Dedicated to our friend and colleague Petr Kment (National Museum, Prague) in acknowledgement of his vital help to Igor Malenovský on the field trip to the Hagher mountains during which the major part of the type series was collected.

Habitat and occurrence in Socotra. Probably hygrophilous and confined to herbaceous vegetation in open marshy patches at high altitudes of the Hagher mountains in central Socotra. All specimens from the type locality (Tudhen) were found in a relatively small open area of a helocrene spring, where they were collected by suction sampling and sweeping from herbaceous vegetation dominated by rigid tussocks of Juncus socotranus (Juncaceae) , swards of Cyperus sp. ( Cyperaceae ), and low dense cushions of Bacopa monieri (Plantaginaceae) and Exacum caeruleum (Gentianaceae) , some of which may be the host plant(s). The area was grazed by cattle and situated within an extensive sparse montane shrubland dominated by Commiphora planifrons , Cephalocroton socotranus , Croton sulcifructus , and Croton socotranus ( Figs 75–76 View Figs 75–76 ). Another specimen was collected in very similar conditions in a small marsh along a mountain brook (wadi Madar, Fig. 77 View Figs 77–79. 77 ).

Distribution. So far only known from the highlands in central Socotra.

MMBC

Moravske Muzeum [Moravian Museum]

MZPW

Polish Academy of Science, Museum of the Institute of Zoology

NMPC

National Museum Prague

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Flatidae

Genus

Dixamflata

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