Austrogymnocnemia ceciliae Machado, 2020

Machado, Renato Jose Pires & Oswald, John David, 2020, Morphological phylogeny and taxonomic revision of the former antlion subtribe Periclystina (Neuroptera: Myrmeleontidae: Dendroleontinae), Zootaxa 4796 (1), pp. 1-322 : 94-97

Austrogymnocnemia ceciliae Machado , new species

( Figs. 30 , 38–39 )

http://zoobank.org/NomenclaturalActs/ 08D2C9A8-E7DE-47B4-BE4F-AD72C462823B

Diagnosis. Forewing narrow, without a continuous longitudinal brown line; pronotum mostly black with pale marks; tibial spurs short; female posterior gonapophysis with cavisetae; male 9 th sternite straight.

Description. Lengths: forewing: 25–28 mm; hind wing: 21–26 mm.

Head ( Figs. 38 a–b): Labrum pale and set with a line of elongate setae. Clypeus pale; with some elongate black setae. Frons predominantly shiny black, except for ventral margin pale; set with few short black setae. Gena pale (with small black marks in some specimens). Vertex raised; in anterior view pale, with a median black line (interrupted centrally in some specimens); in dorsal view mostly black except for pale marks on anterior and posterior margins; covered with short black setae. Ocular setae absent. Antennae clubbed; elongate,> 2x length of pronotum; distance between antennae wider than scape width; all segments dark brown except for a pale dorsal ring on most flagellomeres; torular membrane pale; flagellomeres almost as long as wide at base, apical ones much wider than long; all segments set with short black setae. Mandibles mostly pale, with tip black. Palpi, maxillary and labial mostly dark brown, except for distal margins pale; apical labial palpomere fusiform, palpimacula opening ovalshaped, located medially.

Thorax ( Fig. 38b ): Pronotum about as long as wide; posterior margin as wide as anterior; subapical furrow present; mostly pale except for some black areas as follows: two large medial longitudinal lines, margins, scattered rounded spots; beset with short black setae. Mesonotum mostly black or grey, with some longitudinal yellow bands on central region of segments; covered with short black setae. Metanotum black or grey, with a thin medial pale line; covered with short black setae and few white setae on scutum in some specimens. Pterothoracic pleura black or grey with small pale areas on borders of sclerites; covered with white setae; Miller’s organ present.

Wings ( Fig. 39c ): Rather narrow with tip acute; anterior Banksian line present in both wings, posterior absent; veins mostly dark brown, but some veins intercalated with white spots, beset with short black setae. Male pilula axillaris present. Forewing membrane mostly hyaline with brown marks concentrated at tip, posterior margin, gradate veins, pterostigma, subcostal area, and parts of mediocubital area; CuA fork located between RP origin and first fork, but very close to RP origin; three presectoral crossveins; subcostal veinlets simple; posterior area narrower than prefork area at level of CuA fork. Hind wing membrane mostly hyaline except for a small brown mark at base of hypostigmatic cell, and a large brown rhegmal spot; MP fork located between RP origin and first fork; subcostal veinlets simple; one presectoral crossvein, with a medial spur.

Legs ( Figs. 38 a–b): All pairs of legs, femur elongate (> 2.5x length of coxa); tibia and femur about same size, but longer than tarsi; tibial spurs no longer than half of T1; T3 and T4 about same size but little shorter than T2, which is slightly shorter than T1; T5 about twice longer than T1; claws about half of T5 length; coxa, trochanter, femur, and tibia set with short white setae; femur, tibia and tarsi set with short black setae, and scattered longer black setae; T5 ventrally with two rows of thick, long, black setae. Proleg sense hair elongate, about half of femur length; tibia with antennal cleaning setae ventroapically; coxa dark brown with some pale areas on the anterior surface, trochanter light brown, femur dark brown with some lighter areas basally, tibia mostly dark brown with three pale rings; tarsi dark brown, except for T1 base, pale. Mesoleg with same colour pattern of proleg, except for some areas on internal surface of femur and tibia, light brown. Metaleg with femur and tibia slightly longer than in other legs; colour pattern similar to anterior legs, except for tibia pale with tip dark brown tip and T1 almost entirely pale.

Abdomen: Tergites mostly black with scattered pale marks; beset with short black setae, and some white setae on basal segments. Sternites mostly black with a large medial pale longitudinal band; basal segments set with short white setae, and short black setae on distal segments.

Male Terminalia ( Figs. 39 a–c): Ectoproct posterior margin rounded in lateral view, set with elongate black setae. 9 th sternite posterior margin straight in ventral view; set with elongate black setae. Gonarcus very broad in posterior view; with anterior margin thinner in lateral view. Mediuncus short with tip acute in lateral and posterior view. Paramere large and with tip acute and sclerotized in posterior view; elongate with anterior margin large and apex with a small concavity in lateral view.

Female Terminalia ( Figs. 39 d–e): Ectoproct posterior margin rounded, covered with thin elongate setae. Lateral gonapophyses rounded, smaller than ectoproct, set with cavisetae. 7 th sternite distal margin bending upwards in lateral view; in ventral view with posterior margin concave medially, and covered with long black setae. Pregenital plate divided into two parts, anterior part a thin, curved transverse line with lateral extremities expanded and rounded; posterior part a small transverse sclerotized bar with an acute medial projection on anterior margin. Posterior gonapophyses broad, elongate, with tip enlarged; covered with long black setae, and many cavisetae on posteroventral corner. 9 th tergite with a short membranous digitiform process. Anterior gonapophyses absent. Ventral membrane gonapophyseal plates present.

Distribution ( Fig. 30 ). Australia: NSW, SA, VIC, WA. Known from sparse records in southwestern and southeastern Australia.

Adult activity period. Records for September, and November to January.

Biology. Unknown, larva unknown.

Etymology. ceciliae (from the forename of Dr. Cecilia G. SIMÕES, Brazilian biologist), in recognition of her unfailing support during every step of the development of this revision.

Name-bearing type. Austrogymnocnemia ceciliae : Holotype (by present designation), female, AMSA. AUS- TRALIA: South Australia: 13 km S of Alawoona : 6.jan.1996, M.S. & B.J. Moulds & K.A. Kopestonsky. Condition: pinned; good, left mesoleg and tip of right antenna missing.

Paratypes (4♂, 3♀). AUSTRALIA: New South Wales: Nombinnie Nature Reserve: 18 air km SSE Mount Hope, 160m, 32.99613 oS– 145.94006 oE ± 70m, Oswald , Diehl & Machado, 3.i.2013, M.V., Oswald #626, TAMU— ENTO X0911133 (1♂, TAMU) ; South Australia: same data of holotype (1♀, AMSA, pinned); Western Australia: N of Cave Rock Camp, 28.6 km S of Burra Rock, 31.640S– 121.209E, 17.nov. 2007, 380m, D.R. Britton, D.J. Bickell, BRITTON 2007013 [at light] (1♂, AMSA, pinned); 13mi EbyS of Karonie, 9.nov.1969, Key & Upton, Key’s field notes, trip 163, stop 19422.7 (1♀, ANIC, pinned); 35mi SWbyS of Norseman , 32.38S– 121.29E, 17.xi.1969, Key & Upton, Key’s field notes, trip 163, stop 20206.8 (1♂, ANIC, pinned); track S off hwy1, 79 km EENE of Norseman, 32.08056 oS– 122.60297 oE ± 90m, Oswald, Diehl & Machado, 290m, 28.xii.2012, M.V., Oswald #619 // TAMU—ENTO X0911234 (1♀, TAMU, pinned); same data as previous, TAMU—ENTO X0911017 (1♂, TAMU, pinned) .

Additional material examined (6♂, 3♀). AUSTRALIA: South Australia: 13 km S of Alawoona , 6.i.1996, M.S. & B.J. Moulds & K.A. Kopestonsky (2♀, AMSA) ; Gluepot Reserve : ix.2000 (1♂, SAMA) ; xi.2000 (1♀, SAMA) ; xii.2000 (2♂, SAMA) ; Munyaroo Conservation Park : xi.2005 (1♀, SAMA) ; Whyalla Munyaroo Conser- vation Park : xi.2005 (1♂, SAMA) ; Victoria: Murray-Sunset National Park: Millewa South Bore Track , 34 o 33’35’’– 141 o 03’40’’, 17–23.xi.2002, C. Lambkin, D. Yeates, N. Starick, J. Recsei (1♀, CSCA) ; Western Australia: track S off hwy1, 79 km EENE of Norseman , 290m, 32.08056 oS– 122.60297 oE ± 90m, 28.xii.2012, M.V., Oswald, Diehl & Machado, Oswald #619 (1♂, TAMU) .

Comments. Within Austrogymnocnemia , A. ceciliae sp. nov. seems to be closely associated with A. falsa ; the male and female terminalia of both species are very similar. However, they can be easily separated by the length of the tibial spurs and the general body colour pattern. Austrogymnocnemia ceciliae was included in Machado et al. (2019) as Glenoleon sp.3, where it was recovered sister to A. interrupta and A. diehli sp. nov. That placement is different from that recovered here, but is still within the meteorica species group.

Figures

FIGURE 30. Distribution of Austrogymnocnemia species (part).

FIGURE 38. Austrogymnocnemia ceciliae sp. nov.: a) head, anterior; b) head and thorax, dorsal; c) wings, dorsal.

FIGURE 39. Austrogymnocnemia ceciliae sp. nov.: male: a) terminalia, lateral; b) genitalia, lateral; c) genitalia, posterior; female: d) terminalia, lateral; e) 7th sternite and pregenital plate, ventral. Scale bars = 0.5 mm.