Armacia Stål 1862

albipes (Walker 1868). Indonesia (Bacan, Sula Island).

atrofascialis Distant 1911. Solomon Islands.

basigera (Walker 1868). Indonesia (Amboina, Bacan, Halmahera, Maluku, W. Papua).

clara (Stål 1859). Micronesia (Caroline Islands, Ponape Island, Pouynipet Island, Truk Islands), Palau (Angaur Island, Babelthuap Island, Korror Island, Palau Islands).

colligata (Walker 1868). Indonesia (Ceram).

divisura (Walker 1868). Indonesia (Halmahera, Kai Islands, West Papua).

exacta Melichar 1898. Indonesia (West Papua).

fusca Melichar 1898. Indonesia (Buru Island).

hyalinata (Donovan 1805). Australia (Dorre Island, Queensland, New South Wales?), India?, Indonesia (Amboina, Buru, West Papua, Maluku, Ternate), Papua New Guinea (Offak), Solomon Islands.

latipennis (Walker 1868). Australia, Indonesia (Bacan, Sula Island).

madangensis sp. nov. Papua New Guinea (Madang Province).

nigrifrons (Walker 1858). Indonesia (Bacan, Indian Archipelago, Maluku, Sulawesi).

rubilimba sp. nov. Indonesia (Halmahera Island).

simaethis Fennah 1956. Palau (Western Caroline Island).

spatiosa (Walker 1868). Indonesia (Misool, West Papua).

spinae sp. nov. Indonesia (Halmahera Island).

vigor ata sp. nov. Indonesia (Sulawesi).

Armacia Stål 1862: 70, 1870: 768; Melichar 1898a: 286, 1923: 145; Metcalf 1950: 65; Fennah 1956: 205. Type species: Ricania clara Stål 1859, by original designation.

Description. General colour ochraceous or fuscous. Vertex and most part of frons usually brown or dark brown. Pronotum pallid, sometimes greenish. Legs pale yellow. Forewing and hindwing (Figures 1–8, 11–12, 20–21, 29–30, 38–39, 47–48, 57–58, 65, 68, 70–73, 75) hyaline, more or less fuliginous; veins brown; stigma fuscous, nearly opaque.

Head (Figures 1–10, 18–19, 27–28, 36–37, 45–46, 55–56, 66–67) large. Vertex (Figures 9, 18, 27, 36, 45, 55, 66) broad and short, distinctly separated from the frons by a transverse carina. Frons (Figures 10, 19, 28, 37, 46, 56, 67) oblique, broader than long, with central, sublateral and lateral carinae; clypeus (Figures 10, 19, 28, 37, 46, 56, 67) narrower than frons, shallowly inserted. Rostrum with subapical segment just surpassing meso-trochanters, apical segment attaining post-trochanters.

Pronotum (Figures 9, 18, 27, 36, 45, 55, 66) narrow, with a central carina. Mesonotum (Figures 9, 18, 27, 36, 45, 55, 66) large, triangular and convex, with 3 carinae: central carina straight; lateral carinae inwardly and anteriorly curved, converging closely together on anterior margin, each bifurcating outwardly near middle in a straight longitudinal carina. Forewing (Figures 1–8, 11, 20, 29, 38, 47, 57, 65, 68, 70–73, 75) elongate-triangular, with sparse longitudinal veins and quadrate cells; Sc narrowly separated from the costal border with several distinct cross veins before the nodal cell; three veins emanating from basal cell, R branched near base with outer branch running very close to Sc, but inner branch well separated from Sc, M with three branches arising close to the basal cell, Cu1 with three branches just before the apical margin; claval veins united just beyond apex of scutellum, clavus with only one cross vein connecting 1A to claval suture; apical margin longer than claval suture. Hindwing (Figures 12, 21, 30, 39, 48, 58) small, with two cross veins beyond middle and several longitudinal veins forked near apex. Legs moderately long; hind tibiae with 2 lateral black-tipped spines and 6 apical black-tipped spines.

Male genitalia: pygofer (Figures 14, 23, 32, 41, 50, 60) narrow and high in lateral view. Anal tube (Figures 13, 22, 31, 40, 49, 59) oval or trapeziform, small in dorsal view, short and broad in lateral view. Anal styles relatively short and small, bilobed. Genital styles (Figures 14, 23, 32, 41, 50, 60) symmetrical, relatively elongate and narrow, with apical process angulate or acute at tip. Aedeagus (Figures 15–17, 24–26, 33–35, 42–44, 52–54, 62–64, 74) stout, nearly straight, mostly sclerotised, symmetrical, periandrium well-developed, surrounding penis, distally attached to penis, with pair of cephalad directed dorsal processes at apex, and pair of lateral processes near base.

Female genitalia (Figures 51, 61) symmetrical. Gonopophyses VIII sawlike, strongly sclerotised with teeth on dorsal margin; gonoplac triangular with many teeth extending along ventral margin.

Biology. As with many ricaniid planthopper species, no biological data are currently available for species of Armacia.

Remarks. Species of Armacia can be distinguished from other Ricaniidae by the combination of the following diagnostic characters: forewing vitreous with sparse longitudinal veins and quadrate cells; three veins emanating from basal cell; R branched near base with R1 running very close to Sc, but Rs well separated from Sc.

Species of Armacia are similar to those of Alisca Stål and Plestia Stål, which were originally described as subgenera of the genus Armacia by Stål (1871). Alisca and Plestia were elevated to genus by Melichar (1898a) and can be separated from Armacia by the forewing having four veins emanating from the basal cell rather than three as in Armacia. In addition, the frons of Plestia species is transverse-oval, broader than in species of Armacia.

Distribution. Australia, India?, Indonesia, Micronesia, Palau, Papua New Guinea, Solomon Islands.

Description. ♂ (n=2), BL: 7.5 mm, FWL: 7.0 mm.

General colour brown to pale green. Vertex mostly brown. Frons fuscous, suffused with brown in middle. Clypeus pale brown, with a narrow pale yellow stripe at middle. Rostrum pallid. Pronotum greenish white. Mesonotum ochraceous with two broad, greenish white stripes along median longitudinal carina. Thorax fuscous ventrally, marked with greenish white. Legs pale; tarsi and tips of tibiae fuscous; post-femora pale brown. Abdomen pale green or brown ventrally, marked with fuscous; brown dorsally, with fuscous latitudinal strips; pygofer pale brown. Forewing vitreous, with most cross veins clouded with brown; pale brown costal margin, shaded with fuscous on stigma and towards tip; basal cell partly fuscous.

Head (including compound eyes) (Figures 5, 9–10) slightly wider than pronotum. Vertex (Figure 9) wider at anterior margin than long in middle line (15.5:1). Frons (Figure 10) wider at widest part than long in middle line (1.4:1); disc tricarinate, sublateral carinae shorter than central carina. Clypeus (Figure 10) triangular, without central carina.

Pronotum (Figure 9) wider at widest part than long in middle line (7.8:1), punctuated beside central carina. Mesonotum (Figure 9) tricarinate on disc, with lateral carinas on each side diverging from the middle carina and disunited on the fore border. Wing venation as in Figures 11–12.

Male genitalia with pygofer (Figure 14) narrow and high, with dorsal posterior margin smoothly produced posteriorly in lateral view. Anal tube (Figure 13) moderately large, shallowly convex at ventral margin, oval in dorsal view, longer than wide at middle (1.4:1). Genital styles (Figure 14) relatively large, broad in lateral aspect, with apical process acute at tip, in profile longer than wide at middle (3.2:1). Aedeagus (Figures 15–17) stout, nearly straight, mostly sclerotised, symmetrical, with pair of rather large, acutely papillose lobes at apex, and two pairs of long processes at each apical angle: dorsal pair directed cephalad, remote at end, reaching to basal three-fifths, ventral pair shorter than dorsal, strongly decurved, directed ventromesad; penis with one triangular membranous process at apex.

Material examined. Holotype ♂, Papau New Guinea: Madang Province, Sapi Forest Reserve (30 km W Madang) 5° 12′ S 145° 30′ E, 10.ii.1987, Norman D. Penny (CAS). Paratype, Papua New Guinea: 1♂, same data as holotype (CAS).

Etymology. This species is named after its distribution in Madang Province, Papua New Guinea.

Remarks. This species is similar to A. exacta Melichar 1898 and A. spatiosa (Walker 1868) in appearance, but can be distinguished from the latter by its fore wing with longitudinal veins unforked near apical margin and incomplete subapical line (Figure 11). It can be separated from A. hyalinata (Donovan 1805) by its clypeus with a narrow pale yellow stripe at middle (Figure 10), anal tube narrower and higher (Figure 13) and aedeagus with strongly decurved processes (Figures 15–17).

Distribution. Papua New Guinea (Madang Province).

Description. ♂ (n=2), BL: 6.5 mm, FWL: 7.5 mm.

General colour brown, marked with fuscous and ochraceous. Vertex and frons mostly brown. Clypeus brown with a narrow pale yellow stripe at middle. Rostrum pale yellow. Pronotum yellowish white with brown anterior apex. Mesonotum fuscous, with brown on each side. Thorax ventrally pale brown. Legs pale brown, tips of tibiae fuscous. Abdomen brown, with pale red stripes. Forewing with mostly cross veins clouded with brown; costal margin and apical margin brown; basal cell partly brown; stigma fuscous, with white hyaline point. Hindwing with brown apical margin.

Head (including compound eyes) (Figures 6, 18–19) as wide as pronotum. Vertex (Figure 18) wider at anterior margin than long in middle line (7.8:1). Frons (Figure 19) wider at widest part than long in middle line (1.3:1); disc tricarinate, sublateral carinae shorter than central carina. Clypeus (Figure 19) triangular, without central carina.

Pronotum (Figure 18) wider at widest part than long in middle line (5.7:1), punctuated beside central carina. Mesonotum (Figure 18) tricarinate on disc, with lateral carinas on each side diverging from the middle carina and united on the fore border. Wing venation as in Figures 20–21.

Male genitalia with pygofer (Figure 23) narrow and high, with dorsal posterior margin angularly produced posteriorly in lateral view. Anal tube (Figure 22) moderately large, slightly convex at ventral margin, oval in dorsal view, longer than wide at middle (1.5:1). Genital styles (Figure 23) relatively large, broad in lateral aspect, with apical process acute at tip, in profile longer than wide at middle (2.7:1). Aedeagus (Figures 24–26) stout and mostly sclerotised, symmetrical, periandrium surrounding penis, distally attached to penis, with pair of cephalad directed dorsal processes at apex, deeply crossed, pair of ear-like processes near middle at two sides, and pair of dorsomesad directed lateral processes near base, covered with one short fine spine and one long fine spine on dorsal and ventral surfaces, pair of striped processes at base; penis with one medially concave membranous process and pair of irregular membranous lobes on upper margin subapically.

Material examined. Holotype ♂, Indonesia: Halmahera Isl., Jailolo Dist., Kampung Pasir Putih, 0° 53′ N, 127° 41′ E, 15–31.i.1981, AC Messer & PM Taylor (USNM). Paratype, Indonesia: 1♂, same data as holotype (USNM).

Etymology. This species is named for its abdomen with pale red stripes.

Remarks. This species is similar to A. basigera (Walker 1868), but can be separated from the latter by its vertex (7.8:1) and pronotum (5.7:1), abdomen with pale red stripes (Figure 6). It can be separated from A. clara (Stål 1859) by the apex of the wings (Figure 20) and aedeagus with a pair of dorsomesad directed lateral processes near base (Figures 24–26).

Distribution. Indonesia (Halmahera Island).

Description. ♂ (n=1), BL: 8.5 mm, FWL: 8.0 mm.

General colour fuscous to pale brown. Vertex mostly brown. Frons fuscous, with brown sides. Clypeus brown, with a Y-shaped pale yellow stripe. Rostrum pale brown. Pronotum brown. Mesonotum fuscous. Thorax ventrally fuscous, marked with pale brown. Legs pale, marked with brown; tarsi and tips of tibiae fuscous; post-femora brown. Abdomen yellowish, with yellowish brown bands dorsally; pygofer pale brown. Forewing with three brown bands; basal cell partly fuscous; stigma fuscous, with white hyaline point. Hindwing with brown apical margin.

Head (including compound eyes) (Figures 7, 27–28) as wide as pronotum. Vertex (Figure 27) wider at anterior margin than long in middle line (11.4:1). Frons (Figure 28) wider at widest part than long in middle line (1.4:1); disc tricarinate, sublateral carinae shorter than central carina. Clypeus (Figure 28) triangular, with short central carina.

Pronotum (Figure 27) wider at widest part than long in middle line (5.6:1), punctuated beside central carina. Mesonotum (Figure 27) tricarinate on disc, with lateral carinas on each side diverging from the middle carina and united on the fore border. Wing venation as in Figures 29–30.

Male genitalia with pygofer (Figure 32) narrow and high, with dorsal posterior margin angularly produced posteriorly in lateral view. Anal tube (Figure 31) moderately large, distinctly convex at ventral margin, oval in dorsal view, longer than wide at middle (1.4:1). Genital styles (Figure 32) relatively large, broad in lateral aspect, with apical process acute at tip, in profile longer than wide at middle (2.8:1). Pygofer, anal tube, and genital styles with wrinkle. Aedeagus (Figures 33–35) stout and mostly sclerotised, periandrium surrounding penis, distally attached to penis, with pair of cephalad directed dorsal processes at apex, crossed at end, pair of ear-like processes near middle at two sides, and pair of ventromesad directed lateral processes near base, covered with numerous fine spines on dorsal and ventral surfaces near middle, pair of small triangular processes at base; penis with one medially convex membranous process at apex and pair of oval membranous lobes on upper margin subapically.

Material examined. Holotype ♂ Indonesia: Halmahera Isl., Jailolo Dist., Kampung Pasir Putih 0° 53′ N, 127° 41′ E, 1–14.vii.1981, AC Messer & PM Taylor (USNM).

Etymology. This species is named for its lateral process of aedeagus with numerous fine spines.

Remarks. This species can be distinguished from other known species in Armacia by its clypeus with a Y-shaped pale yellow stripe (Figure 28), forewing with three brown bands (Figure 29), and wrinkled pygofer and anal tube (Figure 31–32). It is similar to A. albipes (Walker 1868) in appearance, but can be distinguished from the latter by the apices of the fore wing, subapical cells, and many cross veins near subapical line (Figure 29).

Distribution. Indonesia (Halmahera Island).

Description. ♂ (n=1), BL: 9.5 mm, FWL: 8.5 mm.

General colour fuscous, marked with ochraceous and yellowish green. Vertex mostly brown. Frons fuscous, with pale brown stripe along central carina. Clypeus and rostrum yellowish. Pronotum light greenish yellow. Mesonotum fuscous, with light greenish yellow spot near middle. Thorax ventrally fuscous, marked with pale brown. Legs pale, post-femora with distinct long brown stripes, tarsi and tips of tibiae fuscous; post-femora fuscous. Abdomen fuscous ventrally; dark brown dorsally, with yellowish brown bands; pygofer brown. Forewing with hyaline apical margin; costal margin hyaline, with some cross veins clouded with fuscous at base; basal cell partly fuscous; stigma fuscous, with white hyaline point.

Head (including compound eyes) (Figures 8, 36–37) slightly wider than pronotum. Vertex (Figure 36) wider at anterior margin than long in middle line (16.5:1), with occipital margin carinate. Frons (Figure 37) wider at widest part than long in middle line (1.6:1); disc tricarinate, sublateral carinae longer than central carina. Clypeus (Figure 37) triangular without central carina.

Pronotum (Figure 36) wider at widest part than long in middle line (7.5:1), indistinctly punctuated beside central carina. Mesonotum (Figure 36) tricarinate on disc, with lateral carinas on each side diverging from the middle carina and united on the fore border. Wing venation as in Figures 38–39.

Male genitalia with pygofer (Figure 41) narrow and high, with dorsal posterior margin angularly produced posteriorly in lateral view. Anal tube (Figure 40) moderately large, slightly convex at ventral margin, trapeziform in dorsal view, longer than wide at middle (1.4:1). Genital styles (Figure 41) slender, with apical process acute at tip, in profile longer than wide at middle (3.4:1). Aedeagus (Figures 42–44) short, stouter, mostly sclerotised, symmetrical, periandrium surrounding penis, distally attached to penis, with pair of short cephalad directed dorsal processes at apex, pair of oblong processes near middle at two sides, and pair of long winding lateral processes near base, pair of moderately large triangular processes at base; penis with dorsally rather large, triangular, membranous lobe at apex.

Material examined. Holotype ♂, Indonesia: Celebes I. Lake Lindu, 900m, 1–5.i.1966., R. Straatman Malaise Trap BISHOP (BPBM)

Etymology. This species is named for its very stout aedeagus.

Remarks. This species can be distinguished from other known species in Armacia by its pronotum with indistinct punctate spots remote from central carina (Figure 36), wing vitreous without brown margin (Figure 38), anal tube trapeziform in dorsal view (Figure 40), genital styles more slender and aedeagus stouter (Figures 41–44).

Distribution. Indonesia (Sulawesi).

Ricania clara Stål 1859: 281.

Armacia clara (Stål); Melichar 1898a: 287; Metcalf 1950:65; Fennah 1956: 205.

Redescription. ♂ (n=8), BL: 7.0 mm, FWL: 7.0 mm; ♀ (n=2), BL: 8.5 mm, FWL: 8.0 mm.

General colour brown to fuscous. Pronotum pallid, sometimes tinged with green. Mesonotum ochraceous. Legs paler, tarsi and tips of tibiae fuscous. Costal margin of fore wing with a narrow, brown fascia; apical margin with a broad brown fascia.

Head (including compound eyes) (Figures 1, 2, 45–46) as wide as pronotum. Vertex (Figure 45) wider at anterior margin than long in middle line (13.6:1). Frons (Figure 46) wider at widest part than long in middle line (1.2:1); disc tricarinate, sublateral carinae slightly shorter than central carina. Clypeus (Figure 46) triangular, without central carina.

Pronotum (Figure 45) wider at widest part than long in middle line (5.5:1), punctuated beside central carina. Mesonotum (Figure 45) tricarinate on disc, with lateral carinas on each side diverging from middle carina and disunited on fore border. Wing venation as in Figures 47–48.

Male genitalia with pygofer (Figure 50) narrow and high, with dorsal posterior margin angularly produced posteriorly in lateral view. Anal tube (Figure 49) moderately large, slightly convex at ventral margin, oval in dorsal view, longer than wide at middle (1.3:1). Genital styles (Figure 50) relatively large, broad in lateral aspect, with apical process acute at tip, in profile longer than wide at middle (2.5:1). Aedeagus (Figures 52–54) stout and mostly sclerotised, symmetrical, periandrium surrounding penis, distally attached to penis, with pair of cephalad directed dorsal processes at apex, deeply crossed, pair of ear-like processes near middle at two sides, and pair of ventromesad directed lateral processes near base, covered with two to five fine spines on dorsal and ventral surfaces; penis with one deeply concave membranous lobe at apex and pair of irregular membranous lobes on upper margin subapically.

Female genitalia (Figure 51) with anal tube relatively small, ventral margin in profile slightly convex; anal style small, bilobed. Gonopophyses VIII (Figure 51) sawlike, strongly sclerotised with about 8 blunt teeth on dorsal margin. Gonoplac (Figure 51) triangular with many teeth extending along ventral margin.

Type material examined. 1♀ (Syntype), Ins Ascens, Kinb, NHRS-HEMI 000000165 (NRS).

Other material examined. 1♀, Palau: Angaur: Saipan-Kitamura, 26.ii.1938, Teiso Esaki (NCSU); 1♂, Caroline Islands: Truk Island, Moen, 8.xiii.1970, J. E. Tobler & I. Cllr (CAS); 1♂, Truk: Tol. I., Mt. Unibot, 2.i.1953, alt. 390m, Pac. Sci. Bd., J. L. Gressitt (CAS); 1♂, Truk: Moen I Mt. Teroken, N, 28.xii.1952, Caroline Is., Pac. Sci. Bd., J. L. Gressitt (CAS); 1♂, East Caroline Islands, 27.ix.1970, Moen, Truk, M. R. Lundgren, (CAS); 1♂, Ponape: Jokaj I. alt. 2m, 29.i.1953, Pacific Sci. Bd. Micronesia Surv, J. L. Gressitt (CAS); 1♂, Ponape: Mt. Tamatamansakir, 180m, 18.i.1953, Light trap, Pac. Sci. Bd., J. L. Gressitt (CAS); 2♂♂, 1♀, Ponape 6 mi E Colonia, low elev., 12.xii.1976, J.F.G. Clarke, Thelma M Clarke (BPBM).

Distribution. Micronesia (Caroline Islands, Ponape Island, Pouynipet Island, Truk Islands), Palau (Angaur Island, Babelthuap Island, Korror Island, Palau Islands).

Remarks. This species can be distinguished from other known species in Armacia by its penis with one large deeply concave membranous lobe at apex (Figures 52–54). A. clara includes five subspecies, A. clara clara (Stål), A. clara pallescens Metcalf, A. clara trukensis Fennah, A. clara namana Fennah, and A. clara kusaieana Fennah, all differentiated by minor variation in colour, particularly of the forewing.

Cicada hyalinata Donovan 1805: 2.

Ricania hyalinata (Donovan); Guérin-Méneville 1834: 466.

Ricania donovanii Spinola 1839: 397, synonymised by Melichar 1898a: 287. Armacia hyalinata (Donovan); Melichar 1898a: 287.

Redescription. ♂ (n=4), BL: 7.5 mm, FWL: 7.0 mm; ♀ (n=1), BL: 8.5 mm, FWL: 8.0 mm.

General colour pale brown to fuscous. Vertex mostly pale brown. Frons fuscous. Clypeus pale brown, suffused with brown in middle. Rostrum pallid. Pronotum greenish white. Mesonotum ochraceous with two broad, greenish white stripes along median longitudinal carina. Thorax fuscous ventrally, marked with yellowish white. Legs pale, tarsi and tips of tibiae fuscous; post-femora fuscous. Fore wing with brown costal margin, shaded with fuscous on stigma and towards tip.

Head (including compound eyes) (Figures 3– 4, 55–56) slightly wider than pronotum. Vertex (Figure 55) wider at anterior margin than long in middle line (11.7:1). Frons (Figure 56) wider at widest part than long in middle line (1.3:1); disc tricarinate, sublateral carinae shorter than central carina. Clypeus (Figure 56) triangular, without central carina.

Pronotum (Figure 55) wider at widest part than long in middle line (5.1:1), punctuated beside central carina. Mesonotum (Figure 55) tricarinate on disc, with lateral carinas on each side diverging from the middle carina and disunited on the fore border. Wing venation as in Figures 57–58.

Male genitalia with pygofer (Figure 60) narrow and high, with dorsal posterior margin circularly produced posteriorly in lateral view. Anal tube (Figure 59) moderately large, shallowly convex at ventral margin, oval in dorsal view, longer than wide at middle (1.2:1). Genital styles (Figure 60) relatively large, broad in lateral aspect, with apical process acute at tip, in profile longer than wide at middle (2.4:1). Aedeagus (Figures 62–64) stout, nearly straight, mostly sclerotised, symmetrical, with pair of rather large, acutely papillose lobes at apex, and two pairs of long processes at each apical angle: dorsal pair directed cephalad, reaching to basal three-fifths, ventral pair shorter than dorsal, nearly straight, directed cephalad, nearly paralleled; penis with one sightly concave membranous process at apex.

Female genitalia (Figure 61) with anal tube relatively small, ventral margin in profile slightly convex; anal style small, bilobed. Gonopophyses VIII (Figure 61) sawlike, strongly sclerotised with about 7 teeth on dorsal margin. Gonoplac (Figure 61) triangular with many teeth extending along ventral margin.

Material examined. 1♀, Solomon Islands: Guadalcanal Koli Point, 30.x. 1944, David G. Hall (BPBM); 1♂, Solomon Islands: Guadalcanal Honiara, 0–100m, xii.1971, NLH Krauss (BPBM); 1♂, Naval Base Samar, P.I., iv.1945, G. E. Bohart (CAS); 1♂, Solomon IS., Guadalcanal, nr. Tetere, Roront, 24.v.1960, C.W. O'Brien Collector (CAS); 1♂, Solomon Is., Vella Lavella Ulo Crater, 10m, 7.xii.1963, Malaise Trap Bishop, P.S. (BPBM).

Distribution. Australia (Dorre Island, Queensland, New South Wales?), India?, Indonesia (Amboina, Buru, West Papua, Maluku, Ternate), Papua New Guinea (Offak), Solomon Islands.

Remarks. This species can be distinguished from other known species in Armacia by the characters given in the key. Metcalf (1955) listed Africa as its locality. In fact, it is distributed in Papua New Guinea (Offak) instead of Africa (Walker 1851). Donovan's type material was not found in the Macleay Museum collection (Fletcher 2008).

Ricania albipes Walker 1868: 154.

Ricania viridicollis Walker 1868: 156, synonymised by Melichar 1898a: 288.

Armacia albipes (Walker); Melichar 1898a: 288

Diagnosis. ♂, length (excl. tegm.): 5.0 mm; exp. tegm.: 16.0 mm.

General colour brown to fuscous. Wings hyaline, colourless. Forewing with three brown bands and some hyaline spots along the apical margin.

Distribution. Indonesia (Bacan, Sula Island).

Ricania divisura Walker 1868: 157.

Armacia divisura (Walker); Melichar 1898a: 289.

Diagnosis. ♂, length (excl. tegm.): 5.0 mm; exp. tegm.: 19.0 mm.

General colour testaceous. Frons and clypeus fuscous. Pronotum whitish or whitish green. Leg pale brown. Wings hyaline. Forewing with brown costal margin and apical margin; subapical line incomplete, brown fascia extend to the end of subapical line.

Distribution. Indonesia (Halmahera, Kai Islands, New Guinea).

Armacia fusca Melichar 1898b: 397; Melichar 1898a: 287.

Diagnosis. ♂, length (excl. tegm.): 5.0 mm; exp. tegm.: 16.0 mm.

General colour fuscous. Forewing opaque, pitch brown; hind wing vitreous. Leg yellowish. Wing venation as in Figure 65.

Type material examined. 1♂ (Syntype), Ins. Baru, Stevens, NHRS-HEMI 000000166 (NRS).

Distribution. Indonesia (Buru Island).

Ricania latipennis Walker 1868: 160.

Ricania emarginata Walker 1868: 160, synonymised by Melichar 1923: 146.

Alisca latipennis (Walker); Melichar 1898a: 293.

Diagnosis, ♂♀, length (excl. tegm.): 6.4–7.4 mm; exp. tegm.: 19.0–21.0 mm.

General colour testaceous. Vertex very short. Wings vitreous. Forewing broad, with a black marginal line; shaded with blackish near the base, on stigma and towards tip.

Distribution. Australia, Indonesia (Bacan, Sula Island).

Flatoides nigrifrons Walker 1858: 101.

Ricania aperta Walker 1868: 156, synonymised by Melichar 1898a: 228.

Armacia nigrifrons (Walker); Melichar 1898a: 288.

Diagnosis. ♂♀, length (excl. tegm.): 5.0–6.0 mm; exp. tegm.: 16.0–21.0 mm.

General colour fuscous. Vertex very short. Wings vitreous. Forewing shaded with brown near the base of costal membrane and apical margin; brown fascia of apical margin with row of hyaline spots.

Distribution. Indonesia (Bacan, Indian Archipelago, Maluku, Sulawesi).

Armacia simaethis Fennah, 1956: 209.

Diagnosis. ♂, length (excl. tegm.): 4.0 mm; FWL: 5.9 mm. ♀, length (excl. tegm.): 4.7 mm; FWL: 8.0 mm.

General colour brown. Forewing vitreous, costal and apical margins narrowly castaneous. Frons wider at widest part than long in middle line (1.25:1). Forewing with subapical line not forming a row for more than half width of fore wing, relatively remote from apical margin (Figure 73). Aedeagus stout, with pair of cephalad directed dorsal processes at apex and pair of dorsomesad directed long lateral processes near base (Figure 74).

Distribution. Palau (Western Caroline Island).

Ricania spatiosa Walker 1870: 157.

Armacia spatiosa (Walker); Melichar 1898a: 289.

Diagnosis. ♂♀, length (excl. tegm.): 5.0–5.3 mm; exp. tegm.: 16.0–19.0 mm.

General colour testaceous. Pronotum and mesonotum greenish white. Wings vitreous. Forewing with brown stigma and apical angle and a narrow, brown fascia at the middle of apical margin (Figure 75).

Distribution. Indonesia (Misool, West Papua).