Macohasa dimorpha ( Hampson, 1918 ) Dubatolov & Volynkin & Kishida, 2018

Dubatolov, Vladimir V., Volynkin, Anton V. & Kishida, Yasunori, 2018, Review of the Prabhasa Moore, 1878 genus-group (Lepidoptera, Erebidae, Arctiinae), Zootaxa 4407 (3), pp. 383-400 : 391-392

Macohasa dimorpha ( Hampson, 1918) , comb. nov.

( Figs. 15–16 , 29 , 40 )

Phaeosia dimorpha Hampson, 1918 , Novitates Zoologicae, 25: 98 (Type locality: “Philippines, Luzon, Mt. Makiling”). Phaeosia dimorpha: Draudt 1914: 212 ; Strand 1922: 529.

Macotasa dimorpha: HolloWay 1982: 210 ; HolloWay 2001: 306.

Type material examined. Syntypes: ♂ ( Fig. 15 ), printed label “ Mt. Makiling , Luzon, Baker [leg.]” / handwritten label “ Phaeosia dimorpha , Type ♂, Hmpsn. ” / printed round label with red border “ Type H.T. ” / printed label “ 1917–37 ” / handwritten label “5195” / printed label with QR-code “ NHMUK010401705 ” (Coll. NHMUK) ; ♀ ( Fig. 16 ), printed label “ Mt. Makiling , Luzon, Baker [leg.]” / handwritten label “ Phaeosia dimorpha , Type ♀, Hmpsn. ” / printed round label with red border “ Type H.T. ” / printed label “ 1917–37 ” / handwritten label “5349” / printed label with QR-code “ NHMUK010401706 ” (Coll. NHMUK) .

Other material examined: 2 ♂, 1 ♀, Philippines, 7–9.III.2000, Palawan, Napsan-Salakot, leg. Joggnath, slides MWM 31777 (♂) and MWM 31778 (♀) Volynkin (Coll. MWM/ ZSM); 1 m, Klondyke, subprov . Benguet, Luzon , 800 ft., 16.III.1912, A.E. Wileman, camp 1, slide BMNH (E) Arct-2868 ♂ (Coll. NHMUK).

Description. Male ( Fig. 15 ). Forewing length 10–11 mm. Forewing ground color yellowish brown, with costa conVeX in subapical third and dorsum noticeably conVeX in basal half; costal margin with one antemedial black spot; central cell with a long and narrow fold with androconial scales; medial area posteriorly the Cu Vein with strong dark brown suffusion; hindwings ochreous. Male genitalia ( Fig. 29 ). Uncus simple, long, basally broad, apically pointed, curVed downwards at apical half; scaphium broad, heaVily sclerotized; Vinculum elongated, more or less V-like, with pointed apeX; distal section of ValVe slightly curVed Ventrally, with narrowed and rounded apeX; harpe-like fold small, pimple-like; distal saccular process short, more or less broad, with apeX pointed and curVed dorsally. Aedeagus straight, long; Vesica broad, with three membranous subbasal diVerticula, one short, globular distal diVerticulum with granulation, and one long and basally curVed distal diVerticulum with granulation and one short apical spine; Vesica ejaculatorius broad, situated subbasally. Female ( Fig. 16 ). Forewing length 12–13 mm. Forewing ground color dark yellow, with a row of 5 black spots, the middle one Very small, dot-like, sometimes absent; hindwing pale yellow. Female genitalia ( Fig. 40 ). OVipositor short and broad; apophyses long and thin, of the same length; ductus bursae short, narrow, membranous, with large, Ventral plate V-like bilobate posteriorly; corpus bursae broad, sack-like, membranous, with one elliptical signum; appendiX bursae short, bulbous, situated latero-posteriorly.

Remark. Males of M. dimorpha differs clearly from those of other congeners by the narrower forewing, round costal spot, and broad area of dark suffusion in medial area; females of M. dimorpha differs from those of other congeners by the pale forewing and less curVed medial transVerse row of black spots. The male genitalia of M. dimorpha are similar to those of M. tetraspila , but differ by the pointed apeX of Vinculum, the distally narrower ValVe with a significantly narrower and slightly curVed apeX, the slightly smaller medial harpe-like fold, the slightly broader distal saccular process, presence of the third subbasal diVerticulum of aedeagus Vesica, the smaller but more heaVily scobinated globular distal diVerticulum, and the heaVily scobinated long distal diVerticulum with the apical spine presented. The female genitalia of M. dimorpha differ from those of M. tetraspila by the broader papillae anales, the longer apophyses posteriores, and the posteriorly bilobate Ventral plate of ductus bursae.

Distribution. The Philippines (Luzon, Mindanao ( Holloway 1982), Palawan).

Figures

FIGURES 11–19. Macohasa and Chinasa spp.: adults. 11, M. orientalis, ♂, Malaysia, Malacca Peninsula (MWM/ZSM); 12, M. orientalis, ♀, Malaysia, Malacca Peninsula (MWM/ZSM); 13, M. tetraspila, holotype ♂, Thailand, Chantaburi prov. (MWM/ZSM); 14, M. tetraspila, paratype ♀, Thailand, Chantaburi prov. (MWM/ZSM); 15, M. dimorpha, syntype ♂, Philippines, Luzon (©NHMUK); 16, M. dimorpha, syntype ♀, Philippines, Luzon (©NHMUK); 17, Ch. costalis costalis, holotype ♂, N China (©NHMUK); 18, Ch. costalis costalis, ♂, China, Zhejiang (MWM/ZSM); 19, Ch. costalis costalis, ♀, China, Guangdong (SZMN).

FIGURES 27–29. Macohasa spp.: male genitalia (genital capsules in ventral vieW). 27, M. orientalis, Malaysia, slide MWM 31775 Volynkin; 28, M. tetraspila, holotype, Thailand, Chantaburi prov., slide MWM 33812 Volynkin; 29, M. dimorpha, Philippines, PalaWan, slide MWM 31777 Volynkin.

FIGURES 36–41. Lithosiina spp.: female genitalia (ventral vieW). 36, Prabhasa venosa, [India, Meghalaya] Khasis, slide BMNH(E) Arct-4557f HolloWay (©NHMUK); 37, Macohasa cernyi, paratype, N Vietnam, slide MWM 31774 Volynkin; 38, Macohasa orientalis, Malaysia, slide MWM 31776 Volynkin; 39, Macohasa tetraspila, paratype, Thailand, Chantaburi prov., slide AV4186m Volynkin; 40, Macohasa dimorpha, Philippines, PalaWan, slide MWM 31778 Volynkin; 41, Macotasa biplagella, slide BMNH(E) Arct-2849 (©NHMUK).