Yoyetta aaede ( Walker, 1850 )

Emery, David L., Emery, Nathan J. & Popple, Lindsay W., 2019, A Revision of the Yoyetta abdominalis (Distant) Species Group of Cicadas (Hemiptera: Cicadidae: Cicadettinae), Introducing Eight New Species, Records of the Australian Museum 71 (7), pp. 277-347 : 328-332

publication ID	https://doi.org/ 10.3853/j.2201-4349.71.2019.1720
publication LSID	lsid:zoobank.org:pub:0C138CF3-68E5-4A22-A46E-3DDC57F0FD2E
persistent identifier	https://treatment.plazi.org/id/2E4DCF25-394F-9067-FF45-FD3474EBFFB3
treatment provided by	Felipe
scientific name	Yoyetta aaede ( Walker, 1850 )
status

Treatment

Yoyetta aaede ( Walker, 1850) View in CoL

Figs 2J View Figure 2 , 3K View Figure 3 , 38–41 View Figure 38 View Figure 39 View Figure 40 View Figure 41 , 53H View Figure 53

Cicada aaede Walker, 1850: 181 View in CoL .

Melampsalta aaede View in CoL .—Stal, 1862: 484; Goding and Froggat, 1904: 648; Distant, 1906: 170; Ashton, 1914: 355; Burns, 1957: 645.

Cicadetta aaede View in CoL .— Moulds, 1990: 143; Moulds and Cowan, 2002: 24.

Yoyetta aaede View in CoL . — Moulds, 2012: 237; Sanborn, 2014: 553.

Material examined. SOUTH AUSTRALIA: Holotype female,[Handwritten] “ A. H. Davis, Adelaide ” / [Typed] “Ent.Club, 44-12”, “129. CICADA AAEDE ” / [round label, green border] “ Type ” ( NHM). 3♂♂ Melampsalta umbrovariegata, Mt Lofty Ra. very numerous [1 “exceptionally numerous”], 7.12. [19]05, Davidson ,gum, SAMA Database No. 20-014565–67; 2♂♂, Morphett Vale , Dec 1889, J. W. Mellor, Mellor Coll., via Capt. S. A., White Coll. ( SAM); 3♂♂ 3♀♀, Hazelwood Park, Adelaide, 34°56'12"S 138°39'25"E, 19.xi.2018, J. Fander (EME 0782 004–9) ( LWP); 1♂ 2♀♀, same location, 19.xi.2018, J. Fander (DNA 84–6, EME 0782 001–3); 4♂♂ 8♀♀, same location, 19.xi.2018, J. Fander (EME 0782 010–021, females 010–017); 13♂♂ 10♀♀, same location, 21.xi.2018, B. Parslow (EME 0782 018–045, females 036–045) (DE); 18♂♂ 42♀♀, same location, 20.xi.2018, B. Parslow & M. Gemmell ( SAM). GoogleMaps

Distribution, habitat and seasonality. Known only from “Adelaide” (the type locality), as well as from Mt Lofty Range and Morphett Vale ( Fig. 41 View Figure 41 ). It has been found in parkland and most likely also occurs in remnant and regrowth eucalypt forest, with records indicating that adults appear in ephemeral mass emergences. Adults have been collected during November and December.

Description

Male ( Figs 2J View Figure 2 , 3K View Figure 3 , 38 View Figure 38 A–B, 38F, 39–40). Head approximately as wide as mesonotum; dorsally mainly black, with a small, tear-shaped, brown marking posterior to ocelli, reducing anteriorly; ocelli pink; dorsal postclypeus dark brown with ochraceous brown midline surrounded by black and with black anterior margin; ventral postclypeus black, with pale pinkish-brown lateral margins; frons black; anteclypeus black; rostrum brown at base, black posteriorly, apex reaching middle of hind coxae; lora black; eyes rose-red; antennae black, each with a brown spot anterior of pedicel; supra-antennal plates black.

Thorax predominantly black. Pronotum mainly black with pale yellow-brown stripe on anterior half of midline, ridges between lateral and paramedian fissures variably blackbrown to black; pronotal collar mainly black, dark brown on lateral angles. Mesonotum black; cruciform elevation with lateral depressions pale yellow; metanotum dark brown to black.

Legs. Coxae dark brown to black, joints pale brown to orange-brown; meracantha narrow, pale grey, black at base, pointed, overlapping opercula; trochanters dark brown, black ventrally; fore femora mainly dark brown, pale brown on anterior outer sides and at joints; femoral spines erect, dark brown at base, yellow-brown at tips; mid and hind femora dark brown; fore and mid tibiae dark brown; hind tibiae dark brown at base, pale brown over remainder; fore and mid tarsi brown to dark brown; hind tarsi pale brown; claws dark brown.

Wings with fore wing costal veins dark brown, paler distally; subcostal veins brown to pale brown; pterostigma mottled reddish-brown; basal cell transparent; basal membranes white; veins CuP+1A A pale yellow-brown; other veins mainly dark brown to black to intermodal line, paler posteriorly; with eight apical cells; prominent hind wing plagas white over entire anal cell 3 and vein 3A, extending to base of vein 2A, with six apical cells.

Opercula ( Fig. 3K View Figure 3 ) broad, rounded on inner edge, following body axis ventrolaterally, depressed centrally; cream-white throughout; clearly separated.

Timbals ( Fig. 2J View Figure 2 ) with five distinct long ribs; long ribs 1–3 extending across membrane and fused dorsally along basal spur; long ribs 4 and 5 abbreviated; long rib 4 with an isolated ventral extension; long rib 5 independent of basal spur, comparatively shorter, extending ventrally across half of membrane; large ridged dome on posterior timbal plate extending across two-thirds of timbal; apodeme pit oval-shaped.

Abdomen. Tergite 1 black, with reddish-brown margins over timbal cavity; tergite 2 black, sometimes with dark reddish-brown areas ventrolaterally; tergite 3 mainly black, with diffuse, orange-brown areas laterally; tergites 2 and 3 with conspicuous silver pubescence; tergites 4–7 grading from orange anteriorly, through yellow-brown to dark brown posteriorly, with dark brown colouration in medial areas extending into wedge-shaped patterns with apices directed anteriorly; intersegmental membranes bright orange; tergite 8 mainly dark reddish-brown to black with broad orange areas dorsolaterally and laterally on the anterior margin. Epipleurites 3–6 orange-brown. Sternite I black; sternite II black with yellow-brown areas laterally; sternites III–VI orange; sternite VII orange with black spot on posterior midline; sternite VIII brown, darker at base, with yellowish pubescence.

Genitalia ( Fig. 39 View Figure 39 ). Pygofer mainly black; dorsal beak black, brown at tip, anal styles pale orange-brown; upper lobes mainly orange-brown; basal lobes brown. Uncus brown, blunt and insignificant; upper lobes in ventral view bulbous, with rounded lateral termination; basal lobes in lateral and ventral views broadly rounded; claspers divided, juxtaposed, with apices broadly rounded. Aedeagus with pseudoparameres not extending half the length of theca; theca recurved ventrally at approximately 160° towards apex, with two broad spines on outer margin of recurvature, and small dorsal ornamentation along apical third; apex with two spines on lateral sides with apices pointing in direction thecal termination.

Female ( Fig. 38 View Figure 38 C–D, 38F). Head, thorax, legs and wings matches description given for male.

Abdomen. Tergites 1–3 black; tergites 3 and 4 mainly black, with small orange areas on anterior lateral sides; tergites 6–8 mainly black with prominent orange bands along anterior margin, broadening laterally; abdominal segment 9 pale brown with a longitudinal black stripe dorsolaterally on each side of midline, and extending ventrally broadly along anterior margin. Dorsal beak black; ovipositor sheath barely extending beyond apex of abdominal segment 9. Anal styles orange-brown.

Measurements (in mm; range with mean in parentheses: 12 males, 12 females).

Body length: male 17.4–19.0 (18.1); female 18.1–20.3 (19.2). Fore wing length: male 19.2–21.1 (20.2); female 20.6–22.2 (21.5). Head width: male 4.8–5.6 (5.1); female 5.0–5.7 (5.2). Pronotum width: male 5.2–5.9 (5.4); female 5.4–5.7 (5.5). Abdomen width: male 5.2–6.2 (5.7); female 5.5– 5.6 (5.6); ovipositor length 5.5–6.2 (5.9).

Distinguishing features. Yoyetta aaede is readily distinguished from all other species in the Y. abdominalis group by the presence of extensive orange colouration on the anterior lateral sides of tergites 4–7 (in all other relevant species, the

(a) viewed laterally from the left; (b) viewed ventrally; (c) aedeagus; (d) apex of theca,

viewed laterally from left; and (e) apex of theca, viewed ventrally. Characters as depicted

in Fig. 4 View Figure 4 . Specimen from Mt Lofty (34°59'S 138°43'E) GoogleMaps .

anterior lateral sides of the tergites is predominantly black or dark brown. It can also be distinguished from Y. denisoni , Y. kershawi stat. rev., comb. nov., Y. timothyi sp. nov. and Y. grandis sp. nov. by its smaller size (body length <23 mm) and from all species apart from Y. hunterorum , Y. grandis sp. nov. and Y. serrata sp. nov. by having white basal membranes in the fore wings. It differs further from Y. hunterorum by the extensive orange (c.f. dull yellow) colouration of the sternites. Its appearance is similar to Y. serrata sp. nov., although it lacks the orange triangular on the lateral tergites are distinctive in that species. In addition, the males of Y. aaede have opercula that are entirely white or pale grey (cf. black at base in Y. serrata sp. nov.).

Calling song ( Figs 40 View Figure 40 , 53H View Figure 53 ). The calling song of Y. aaede sp. nov. was recorded from a single male in captivity ( Fig. 40 View Figure 40 ). The call structure of this species consists of simple repetitive phrases, each comprising a series of either four or five macrosyllables.As illustrated in Fig. 40B View Figure 40 , sometimes the fourth and fifth macrosyllable coalesce into a single longer macrosyllable. Macrosyllables generally range between 32 and 51 ms duration (n = 1). By comparison, the longer (coalesced) macrosyllable ranges between 88 and 139 ms duration. The phrase repetition rate for the call ranges from c. 2.4– 3.0 s. The highest amplitude frequency plateau from the captive recording broadly ranged between 3.4 and 9.3 kHz with a dominant frequency around 8.1 kHz ( Fig. 40 View Figure 40 ).