Megagonoleon tillyardi (New, 1985), 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 : 258-262

Megagonoleon tillyardi (New, 1985) , new combination

( Figs. 135–137 )

http://zoobank.org/NomenclaturalActs/ 5BF4776B-E8B4-4B6B-8ED6-8CCC04E1A4FD

Glenoleon tillyardi New, 1985b:54 (OD); New 1996:84 (cat); Stange 2004:106 (cat); Oswald 2018 (cat); Machado et al. 2019 (tree).

Diagnosis. Forewing hyaline; tibial spurs short, about half of T1 length; male, paramere with anterior margin broad in ventral view; female ectoproct without cavisetae; female, lateral gonapophysis smaller than ectoproct; female membranous digitiform process long.

Description. Lengths: forewing: 18–20 mm; hind wing: 16–19 mm.

Head ( Figs. 135 a–b): Labrum pale; with a line of elongate setae. Clypeus pale; with few elongate setae. Frons predominantly pale, except by a transverse black band located around antennae (some specimens with band reduced to just a dark area near antennal base); set with few black setae. Gena pale. Vertex raised; in anterior view mostly pale with two small transverse dark brown bands medially and a central medial dark brown spot; in dorsal view mostly pale with scattered dark brown marks, mainly on posterior margin; set with short black setae. Ocular setae absent. Antennae clubbed; elongate,> 3x length of pronotum; distance between antennae wider than scape width; mostly light brown to pale, in some specimens few subapical segments entirely pale, and apical ones dark brown; torular membrane and scape pale; flagellomeres almost as long as wide at base, but apical ones much wider than long; all segments set with short black setae. Mandibles mostly pale, with tip black. Palpi, maxillary and labial pale; in some specimens the apical labial segment light brown; apical labial palpomere fusiform, palpimacula opening oval-shaped, located medially.

Thorax ( Fig. 135b ): Pronotum slightly wider than long; posterior margin as wide as anterior; subapical furrow present; mostly pale except for few dark brown marks as follows: a central large one (in some specimens only on posterior half), two curved and thin surrounding the central one, two small located laterally on posterior half of some specimens; beset with short black setae and some long setae, some specimens with long pale setae on anterior corners. Mesonotum mostly pale, with some small dark brown spots distributed on segments as follows: two rounded on prescutum, two small longitudinal on each side of scutum, anterior margin of scutellum; covered with short black setae. Metanotum pale, with few small dark brown marks, mainly near wings base; and scutellum medially. Pterothoracic pleura mostly pale with some dark brown areas mainly on segments border; covered with white setae; Miller’s organ present.

Wings ( Fig. 135c ): Fairly broad; anterior Banksian line present in both wings, posterior absent; veins mostly pale, but some veins intercalated with light brown spots, beset with short black setae. Male pilula axillaris present. Forewing membrane hyaline with pterostigma white (few darker specimens with area surrounding crossveins brown shaded); CuA fork located between RP origin and first fork; three presectoral crossveins; most of subcostal veinlets simple but few distal ones forked; posterior area narrower than prefork area. Hind wing membrane hyaline with pterostigma white; MP fork located between RP origin and first fork; subcostal veinlets simple; one presectoral crossvein.

Legs ( Figs. 135 a–b): All pairs of legs, femur elongate (> 2.5x length of coxa); tibia and femur with same size, but slightly longer than tarsi; tibial spurs very smaller than T1 half; T2, T3 and T4 about same size, T1 slightly longer than T2, T5 slightly longer than T1; claws about half of T5 length; coxa set with many short white setae, remaining set whit short black setae and scattered long black setae (some specimens with short white setae); T5 ventrally with two rows of thick, long, black setae. Proleg sense hair absent; tibia with antennal cleaning setae ventroapically; all segments pale except for tips of femur and T5, dark brown, and three rings on tibia. Mesoleg with same colour of proleg. Metaleg with femur, tibia and T1 slightly longer than in other legs; colour same of other legs except for tibia entirely pale with tip dark brown.

Abdomen: Segments mostly pale with dark brown marks on posterior border (some darker specimens with distal segments mostly dark brown). Beset with short black setae.

Male Terminalia ( Figs. 136 a–d): Ectoproct posterior margin rounded in lateral view; set with elongate black setae. 9 th sternite posterior margin rounded in ventral view; set with elongate black setae. Gonarcus broad in lateral view and arched in posterior view. Mediuncus elongate in lateral; broad and rounded in posterior view. Paramere in lateral view with apex thin, curved and rounded but anterior area broad and elongate; curved in posterior view; in ventral view broad and curved but apical inner corner elongate.

Female Terminalia ( Figs. 136 e–f): Ectoproct posterior margin rounded and covered with thin elongate setae. Lateral gonapophyses rounded, smaller than ectoproct, set with few cavisetae. 7 th sternite distal margin straight in ventral view; covered with short black setae. Pregenital plate small, semi elliptical, with a small medial extension in ventral view. Posterior gonapophyses thin, elongate, covered with long black setae. 9 th tergite with a very long membranous digitiform process. Anterior gonapophyses absent. Ventral membrane gonapophyseal plates present.

Distribution ( Fig. 137 ). Australia: NSW, NT*, QLD*, SA*, WA. Widespread across mainland Australia; apparently absent from far eastern areas.

Adult activity period. Records for July to December, and February to June (all months of the year except January).

Biology. Unknown, larva unknown.

Name-bearing type. Glenoleon tillyardi : Holotype (by original designation), female, ANIC, examined. Type locality: Australia, Western Australia, 34 km NE by N of Laverton, Deeba Rock Hole, 28 o 22’S– 122 o 37’E. From original description: “ Holotype, ♀, Western Australia, Deeba Rock Hole, 34 km NE, by N. Laverton, 28 o 22’S., 122 o 37’E., 12.xi.1977, M. S. Upton ( ANIC)”. Condition: good; terminalia dissected.

Additional material examined (73♂, 56♀). AUSTRALIA: Northern Territory: 3 mi N of Alice Springs , 21.x.1966, A. & R. Mesa (1♂, ANIC) ; 2 miles S of Barrel Creek , 13.ii.1966, Britton, Upton & McInnes (1♂, ANIC) ; Devil’s Marbles : 350m, 27.x.1962, E.S. Ross & D.Q. Cavagnaro (1♂, 1♀, FSCA) ; Elkedra : x.1977 (1♂, SAMA) ; Kings Creek Campground: near Kings Canyon National Park (A22), 22.xi.1989, R.B. Miller (1♂, 1♀, FSCA) ; Mount Gilruth : Gorge NE, 13.02S– 133.05E, 10–13.vii.1979, G. Monteith & D. Cook (1♀, QMBA) ; Palm Valley : 26.xi.1954 (1♀, MVM) ; SA White : (1♀, SAMA) ; Standley Chasm : 42 km W of Alice Springs, 11.x.1972, M.S. Up- ton (1♂, ANIC) ; Tenant Creek : xi.1978 (1♀, QMBA) ; Tickalara : 14.xi.1949, E.F. Riek (7♂, 4♀, ANIC, 1♂, FSCA) ; Queensland: Tickalara : xi.1949, Riek (1♂, FSCA) ; South Australia: Mount Lindsay : 18.x.1996 (1♂, SAMA) ; Mulga Park : x.1960 (1♂, SAMA) ; Musgrave Range : x.1994 (2♂, 3♀, SAMA) ; Petermann Range : 30.x.1963, at light, P. Aitken & N.B. Tindale (1♀, 1♂, SAMA) ; Victory Well Everard Park Station : 31.x.1970; G. Gross & E. Mattheus, 24-000101 (1♀, SAMA) ; Wantary Campsite : x.1998 (1♂, SAMA) ; Western Australia: Blackstone : x.2006 (2♂, SAMA) ; 17 km NbyE of Cane River homestead, 21.56S– 115.39E, 27.iv.1971, Upton & Mitchell (2♀, ANIC) ; 8 km SWbyW of Cane River homestead, 22.07S– 115.33E, 31.iii.1971, E.F. Riek (21♂, 10♀, ANIC) ; 107 miles SSE of Carnarvon , 21.iv.1968, I.F.B. Common & M.S. Upton (6♂, 5♀, ANIC) ; Dampier : 20.iv.1971, Upton (1♀, ANIC) ; 34 km NE of Deeba Rock Hole, by N. Laverton, 28 o 22’S., l 22 o 37’E., 12.xi.1977, M. S. Upton (1♂ PT, 3♀ PT, ANIC); Giles : ii.1962 (1♂, 1♀, MVM) ; Goldfields highway: 85 km SSE Wiluna, 27.32886 oS– 120.50593 oE ± 70m, 560m, 26.xii.2012, M.V., Oswald, Diehl & Machado, Oswald #617 (2♂, 3♀, TAMU) ; Halls Creek : x.1953 (1♂, SAMA) ; Hamelin Pool : 13.iv.1970 (1♂, MVM) ; Learmonth : 6.vi.1957 (2♂, MVM) ; Logues Springs: 102 km SEbyE of Broome , 18.25S– 123.05E, 18.viii.1976, I.F.B. Common (2♂, 2♀, ANIC) ; 20 km N of Meekatharra , 26 o 25’22.7’’S– 118 o 35’25.6’’E, 5.iii.1994, R. Miller & L. Stange (2♂, 1♀, FSCA) ; 1 km NE of Mill- stream homestead, 21.35S– 117.04E, 23.iv.1971, Upton & Mitchell (1♀, ANIC) ; 6 km S of Mount Keith homestead, 27.20S– 120.30E, 14.xi.1970, Upton & Feehan (2♂, 5♀, ANIC) ; Pilgangoora : v.1953 (1♂, SAMA) ; 0.5 km E of Pungkulpirri Waterhole, Walter James Range, 24 o 39’15’’S– 128 o 45’18’’E, 26.ix.2006, at light, Central Ranges Sur. Camp 1 (4♂, 3♀, SAMA) ; Roebourne : iv.1914 (1♂, 1♀, ANIC) ; Yardie Creek : iv.1953 (1♂, 1♀, MVM) ; Warroora : iv.1978 (1♂, QMBA) ; Wittenoon : 4.iii.1994, L. Stange & R. Miller (1♀, FSCA) ; Wolfe Creek Crater: Kimberly Div. ix.1953 (1♀, SAMA) ; Wylo : iv.1978 (1♂, QMBA) .

Comments. See Comments for M. longidigitus sp. nov.

Figures

FIGURE 135. Megagonoleon tillyardi: a) head, anterior; b) head and thorax, dorsal; c) wings, dorsal.

FIGURE 136. Megagonoleon tillyardi: male: a) terminalia, lateral; b) genitalia, lateral; c) genitalia, posterior; d) genitalia, ventral; female: e) terminalia, lateral; f) 7th sternite and pregenital plate, ventral. Scale bars = 0.5 mm.

FIGURE 137. Distribution of Megagonoleon (part) and Minyleon species.