Yoyetta douglasi, Popple & Emery, 2020
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publication ID |
https://doi.org/ 10.3853/j.2201-4349.72.2020.1765 |
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publication LSID |
lsid:zoobank.org:pub:B4BECFF5-5972-4F1B-819A-380798AE9082 |
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persistent identifier |
https://treatment.plazi.org/id/72EF0B6D-4F37-4B9C-A99E-094BC1C2720C |
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taxon LSID |
lsid:zoobank.org:act:72EF0B6D-4F37-4B9C-A99E-094BC1C2720C |
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treatment provided by |
Felipe |
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scientific name |
Yoyetta douglasi |
| status |
sp. nov. |
Yoyetta douglasi View in CoL sp. nov.
urn:lsid:zoobank.org:act:72EF0B6D-4F37-4B9C-A99E-094BC1C2720C
Figs 1–3 View Figure 1 View Figure 2 View Figure 3 , 4A View Figure 4 , 5A View Figure 5 , 6A View Figure 6 , 7 View Figure 7
Holotype ♂, Mt Difficult Rge , Grampians, V. 2600 f[t], 7 Feb 1956, mvl, N. B. Tindale, SAMA Database No. 20- 017503, ( SAM) . Paratypes — VICTORIA: 2♂♂, 9 km SSW of Hall’s Gap, Jct. Rosea Track & Stoney Ck Rd, Grampians Nat. Park, Vic. , 700 m, 37°11'S 142°29'E, 5.ii.1997, D. C. F. Rentz & E. S. Ross, Stop 9, ANIC GoogleMaps Database No. 20 010795, 20 010797 ; 1♀, 11 km SE Halls Gap , 206 m, 37°14'S 142°42'E, 7.ii.1997, D. C. F. Rentz & E. S. Ross, Stop 16 (at light), ANIC GoogleMaps Database No. 20 010796 ( ANIC) ; 1♀, Mt. Difficult , Grampians Ra. W. Vic. 2,600' (ft), 2.i.1966, T . Weir ( UQIC) ; 1♂ 1♀, Grampians Nat Pk., Reed lookout, 7 km W Hall’s Gap , 2.i.2000, F. Douglas ( FD) ; 2♂♂, 10 km S. of Visitor’s Centre, Grampians National Park , 37°14.631'S 142°32.118'E, 337 m, 1 Dec. 2006, D. Marshall, K. Hill, AU. VI GoogleMaps . GRB ( NMV) GoogleMaps ; 2♂♂, same data as previous (DE) GoogleMaps ; 1♂, same data as previous ( LWP) GoogleMaps ; 1♂, same data as previous GoogleMaps ; 1♂, same data as previous, [ MSM genitalia prep.] 74 GoogleMaps ; 1♂, same data as previous, C. Simon lab voucher, legs in ETOH GoogleMaps , body pinned, 08.AU. VI. GRB.01, “ Yoyetta double-zit”, specimen recorded; 1♂, same data as previous, 06.AU. VI GoogleMaps . GRB.02; 1♂ 28.8 km S. of Visitor’s Ctr, Grampians National Park , 37°23.946'S 142°29.642'E, 319 m, 1 Dec. 2008, D. Marshall, K. Hill, AU. VI GoogleMaps .GRC; 1♂, Halls Gap, Grampian Mtns , 11.i.1976, M. S. & B. J. Moulds, [ LWP] Genitalia prep. 718-01 ( MSM) ; 1♂ 2♀♀, same data as holotype, SAMA Database No. 20-017504 to 20-017506 ( SAM) .
Erratum requested by the authors 20 August 2020. Replace “… 1♂ 1♀, Grampians Nat Pk., Reed lookout, 7 km W Hall’s Gap, 2.i.2000, F. Douglas (FD); …” with “ 1♂, 10 km S. of Visitor’s Centre, Grampians National Park, Jnctn. Rd. to Mt Williams, 37°14.631'S 142°32.118'E, 337 m, 1.xii.2006, D. Marshall, K. Hill; 1♀, 0.5 km E Reeds Lookout, Grampians Nat Pk., 37°08'54"S 142°27' 11"E, 732 m, 2.ii.2000, F. Douglas (FD); …”
Etymology. Named in honour of Fabian Douglas, who has contributed much to the knowledge of cicadas and other insects and their conservation in western Victoria.
Distribution, habitat and seasonality. Known only from the Grampians in central western Victoria ( Fig. 1 View Figure 1 ). Adults occur in open forest, mainly on eucalypts ( Fig. 2E, F View Figure 2 ). They have been encountered during January and February.
Calling song. The calling song of Y. douglasi sp. nov. is described from a series of recordings made and kindly provided
by D. C. Marshall and K. B. R. Hill (C. Simon laboratory, University of Connecticut ; n = 11 from one locality), with an example illustrated in Fig. 3 View Figure 3 . It contains repeated phrases, each comprising an initial series of individual syllables, followed by a long echeme, then a short echeme. The initial syllable sequence typically lasts 0.5– 2.0 s. Each syllable is approximately 0.009 s and, for the most part, separated by gaps of 0.5– 0.6 s. Prior to commencement of the long echeme, the gaps between syllables reduce successfully (effectively down to c. 0 s at the commencement of the echeme). The long echeme has a duration of 1.0– 1.5 s and exhibits a double amplitude modulation at the end, with the penultimate modulation being a subtle increase and the final modulation being much more prominent ( Fig. 3B View Figure 3 ). The long echeme ends abruptly with a brief silence (0.01– 0.02 s) before commencement of the short echeme to conclude the phrase. The short echeme lasts 0.06– 0.07 s and exhibits a strong amplitude modulation (more extreme than in the long echeme). Each phrase is separated by a gap of 0.2– 0.5 s. There may be a longer gap between phrases when a male moves between singing stations. Sometimes, this longer gap is replaced by a longer syllable sequence, some of which may be produced in flight. Otherwise, the calling song is produced from a stationary position .
The calling song has a dominant frequency between 8.3 and 11.0 kHz, tending to be higher during amplitude modulations. It has a high amplitude plateau spanning approximately 7.6–11.5 kHz ( Fig. 3C View Figure 3 ). This plateau broadens during amplitude modulations, extending up to 12.5 kHz ( Fig. 3D View Figure 3 ). Males have been observed to be attracted to simulated female wing-flick responses, when these are timed precisely after each echeme (K. Hill and D. Marshall, pers. obs., 1 December 2006).
Morphology. Male ( Figs 2 View Figure 2 A–B, 4A, 5A, 6A, 7). Head as wide as mesonotum, a thin yellow-brown triangular fascia on the midline posterior to ocelli, not reaching posterior margin; brown spot between each compound eye and adjacent posterior ocellus; ocelli pink; dorsal side of postclypeus dark brown and black with central yellow-brown triangular marking, apex directed anteriorly; ventral side of postclypeus mainly black, transverse grooves black, lateral borders ochraceous; anteclypeus black, rostrum mainly brown, darkening distally, apex black, reaching posterior margins of mid coxae; lorum black with ochraceous margins; gena black; eyes dark brown or grey-brown; antennae black, supra-antennal plates black, brown at base of pedicel.
Thorax predominantly black. Pronotum variably dark brown to black; pronotal collar brown to dark brown, paranotum dark brown to black. Mesonotum black; cruciform elevation mainly brown, with median area black; wing grooves brown to dark brown. Metanotum black.
Legs. Coxae mainly black, with orange-brown margins; apical joints red; basisterna black; meracantha small, narrow, cream, black at base, pointed, overlapping one-quarter of opercula; trochanters black with central segment orangered; fore femora pale reddish-brown with black longitudinal stripes; femoral spines erect, black; mid and hind femora black, with reddish-brown apices; fore tibia black, dark brown apically; mid tibia brown; hind tibia pale brown; tarsi reddish-brown (hind tarsi paler); claws dark brown, black at tips.
Wings with fore wing costal veins brown, CuA pale brown, other veins dark brown to black, pterostigma reddish-brown, other cells hyaline, basal membranes orange, with eight apical cells; hind wing plaga white, including almost all of anal cell 3 (jugum) extending partly onto margins of ac2(v) along vein 3A, vein CuA dark brown, other veins pale brown to brown, with six apical cells.
Opercula ( Fig. 4A View Figure 4 ) covering abdominal cavity, rounded, following body axis ventrolaterally, black over basal area, extensively orange-brown remainder, clearly separated.
Timbals ( Fig. 5A View Figure 5 ) with five distinct long ribs; long ribs 1–4 extending across membrane and fused dorsally along basal spur; long rib 5 independent of basal spur, comparatively shorter, extending ventrally across half of membrane; large ridged dome on posterior timbal plate extending across twothirds of timbal; apodeme pit oval-shaped and conspicuous.
Abdomen with tergites 1 and 2 black; tergites 3–7 black with orange lateral to dorsolateral posterior margins; tergite 8 black. Epipleurites black with orange posterior margins. Sternite I black; sternite II black with ochraceous ventrolateral posterior margins; sternites III-VI dark orange to orange with black medial areas tapering posteriorly, not reaching posterior margin; sternite VII dark orange-red with broad black along midline, tapering posteriorly; sternite VIII brown, with brown pubescence ( Fig. 6A View Figure 6 ).
Genitalia ( Fig. 7 View Figure 7 ). Pygofer dark brown to black; upper lobe prominent, apically acute, with rounded termination; basal lobe gently curved, bulbous. Uncus orange-brown; in lateral view beak-like, with broadly rounded termination; in ventral view narrow; claspers divided, bulbous, with apices tapering ventrolaterally. Aedeagus with pseudoparameres almost extending as far as theca; theca recurved at 180° towards apex, with prominent transparent flange along dorsal margin of distal half of recurvature, smooth and broadening to>3× width of theca and projecting dorsally to terminate above theca; remainder of theca is short, with <20% of theca extending apically beyond margin of recurvature; apical area tapering, with 2–3 spines on ventral surface near base of transparent flange, several small spines on dorsal side at tip.
Female ( Fig. 2 View Figure 2 C–D).
Legs similar to male, otherwise body coloration much paler overall.
Head. Dorsal side brown, with black marking around ocelli and supra-antennal plates, black spot at medial border of eye. Ventral side mainly black; postclypeus black with broad brown or pale reddish-brown lateral margins; gena mainly black; mandibular plates mostly pale brown; anteclypeus pale reddish-brown, black centrally; rostrum pale brown, dark brown apically.
Thorax with a much greater range of pale brown coloration than in males; pronotum pale brown with black markings either side of midline and around paramedian and lateral fissures; pronotal collar brown, with extreme margins of lateral angles black; mesonotum pale brown; submedial and lateral sigilla black; cruciform elevation pale brown, black medially; scutal depressions black, metanotum black with pale brown margins.
Abdomen. Tergites I–VII similar to male, with broader reddish brown coloration on posterior lateral sides; tergite VIII reddish-brown, black medially; sternites I–VII similar to male sternite VIII pale brown; abdominal segment 9 brown with three longitudinal black stripes on midline and either side of midline, darker brown spots on either side in lateral depressions; dorsal beak black; ovipositor dark brown, becoming black at tip, extending approximately 4 mm beyond apex of abdominal segment 9. Anal styles orange-red; ovipositor sheath dark brown to black.
Measurements (in mm; 11 males, 4 females). Body length: male 23.9–27.3 (25.8); female 31.3–32.8 (32.2). Fore wing length: male 28.1–32.5 (30.4); female 32.1–35.6 (34.5). Fore wing width: male 9.9–11.7 (10.5); female 11.0–11.9 (11.5). Head width: male 6.5–7.4 (7.0); female 7.58.3 (7.9). Pronotum width: male 7.1–8.1 (7.6); female 8.0–9.3 (8.6). Abdomen width: male 6.6–8.0 (7.4); female 7.18.7 (7.7). Ovipositor length: female 14.3–14.9 (14.7).
Distinguishing features. The calling song of Y. douglasi sp. nov. is similar to that of Y. subalpina Emery, Emery & Popple from south-eastern Australia. It differs principally in the longer duration of the long echeme and characteristically by the presence of two amplitude modulations at the end of the long echeme (cf. one in Y. subalpina ).
Within the Y. abdominalis species group, Y. douglasi sp. nov. is morphologically closest to Y. subalpina Emery, Emery & Popple , Y. regalis Emery, Emery & Popple , and Y. grandis Emery, Emery & Popple in which the males have black abdominal tergites with conspicuous narrow, orange or yellow posterior margins and both sexes have an extensively opaque, bold, white hind wing plaga and black central markings on sternites III–VII. Males can be easily distinguished from Y. grandis by having orange fore wing basal membranes (cf. pale grey or pale orange) and predominantly orange-brown opercula (cf. pale cream). They can be distinguished from Y. regalis and Y. subalpina by examining the apex of the theca, which tapers apically (cf. club-like or blunt and broad). Females can be easily distinguished from all of the aforementioned species by their long ovipositor, which extends approximately 4 mm beyond the apex of abdominal segment 9.
| SAMA |
South Australia Museum |
| SAM |
South African Museum |
| ANIC |
Australian National Insect Collection |
| T |
Tavera, Department of Geology and Geophysics |
| UQIC |
University of Queensland Insect Collection |
| VI |
Mykotektet, National Veterinary Institute |
| GRB |
Ginseng Resource Bank |
| NMV |
Museum Victoria |
| MSM |
Marine Science Museum, Tokai Univ. |
| R |
Departamento de Geologia, Universidad de Chile |
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