Antitrisuloides siamensis Behounek & Kononenko

Behounek, Gottfried & Kononenko, Vladimir, 2011, A review of the genera Elydnodes Hampson, 1913 and Antitrisuloides Holloway, 1985 with description of two new species (Lepidoptera, Noctuidae). Revision of Pantheinae, contribution III, Zootaxa 3108, pp. 41-52 : 46-51

Antitrisuloides siamensis Behounek & Kononenko , sp. n.

( Figs. 11–14 , 20 , 24 )

References: Kononenko & Pinratana 2005: 132, Pl. 38, figs. 13, 16 (as Tambana sp.).

Material examined. Holotype: male, Thailand, Prov. Tak, Doi Mussoe 800 m, 16˚45ʹ309ʹ N 098˚55ʹ404ʹ E, 10– 18.xi.2009, leg. T. Ihle, genit. prep. 7396GB (coll. AB, to be deposited in ZSM). Paratypes. 1 female, with same data; 4 males, same locality, 12–13.v.2008, genit. prep. 7397GB, 7595GB; 1 male, Thailand, Kanchanaburi, 30 km NE Sri Sawat, 800 m, 14˚49ʹ534ʹ N 99˚06ʹ556ʹ E, 30.xi–1.xii. 2007, leg. T. Ihle; 1 male, with same data, genit. prep. 7398GB; 1 female, North Laos, Prov. Longan Prabang, Bang Viang Kham, 15 km S Phou Khoun, 1000 m, end xi.2003, leg local collector; 1 female, same locality, 1500 m, ix.2004; Thailand, Kanchanaburi, Sri Sawad, 21.vi.2003 (all in coll. AB, GB); 1 male, North Thailand, Prov. Chiang Mai, 900 m, between Chiang Dao and Kariang, 19˚25ʹN 98˚48ʹE, 8.xi.2002, leg. B. Herzig & G. Ronkay (coll. GR); 1 male, Kanchanaburi, Dong Lek Srisawad, 25.vii.2003 (AP); 1 male, Khao Yai, Korat, 23.x.2005 (AP); 1 male, Thailand, Chiang Mai, Doi Phahompok, 14 km NW Fang, 1700 m, 16.x.2000, leg. Hreblay & Soos (coll. HNHM); 1 male, Thailand, Chiang Mai, between Chiang Dao and Verjang, 900 m, 26.xi.2002, leg. B. Herczig & G. Ronkay (coll. PG).

Diagnosis. The new species differs from A. catocalina by greyish or brownish-grey with metallic shining color of forewing, straight distinct antemedial line, distinct orbicular and reniform with blackish-brown shadow and distinct thin whitish postmedial line. In the male genitalia it differs by cylindrical uncus, wider, but somewhat shorter valva, larger harpe, and larger aedeagus with tubular vesica bearing two basal patches of small, plate-like cornuti; fthe emale genitalia differ by longer apophyses posterior and anterior, shape of antrum, ductus bursae and corpus bursae.

Description. Adult ( Figs. 11–14 ). Wingspan 38–40 mm. Head and thorax dark, brownish grey, patagia bordered with whitish; abdomen dark grey, with dark crest on segments 4–5. Ground color of forewing brownish-grey or grey, with metallic shining; basal line marked as black spot; basal and subbasal field dark grey with suffusion of whitish scales; antemedial line almost straight, blackish, slightly dentate on R and Cu-trunks, with pale whitish inner bordering; medial field grey or brownish grey with traceable diffused medial shadow; orbicular moderate, rounded formed by blackish borderline, brown inside; reniform typical shape, formed by white borderline distinct at base and brownish nuclear; area below and distally reniform to subterminal line with contrast blackish-brown dash, separated for two parts by paler brown dash; subterminal line arched around reniform, below reniform straight, with two teeth; subterminal field grey or brown-grey with intensive suffusion of whitish scales, especially expressed in costal area; subterminal line diffused, blackish, dentate; terminal field brownish-grey; terminal line thin, brownish; cilia brownish grey. Some pale specimens have not expressed blackish-brown dash behind reniform. Females with blackish-brown medial field, darker in outer part, orbicular and reniform not expressed. Hind wing yellow, with blackish terminal field, cilia blackish-brown. Male genitalia ( Fig. 20 ). Coremata absent. Uncus cylindrical, curved basally and apically, with minute apical hook; tegumen somewhat shorter than vinculum, wide; transtilla wide, triangular, juxta shield-like very wide; vinculum v-like; valva more massive, wider, but shorter than in A. catocalina , with parallel margins, acute-rounded apically; sacculus larger than in A. catocalina ; harpe more massive than in A. catocalina , flat, apically pointed, somewhat extended costal margin of valva. Aedeagus longer than in A. catocalina , sclerotised distally; vesica projected dorsally, tubular, constricted apically, bearing two sclerotised patches of small plate-like cornuti, in distal part with patch of minute scobination. Female genitalia ( Fig. 24 ). Papillae anales quadrangular; apophyses posterior 2 times shorter than anterior ones; antrum moderate, inverted cup-like, without medial cut; ductus bursae rather short and wide, membranous, ribbed; corpus bursae ovoid, with small appendix in apical part.

Etymology. The species name is derived from the word “ Siam ” (older name for Thailand). Distribution ( Fig 30 ). North Thailand, North Laos. Moths have been collected in May, July and September - December.

Figures

FIGURES 9 – 14. Antitrisuloides spp., adults. 9 – A. catocalina, holotype of polyphaenaria, female, type, Indonesia (BMNH); 10 – A. catocalina, Thailand, male (AB); 11 – A. siamensis sp. n., male, holotype, genit. prep. 7396, Thailand (AB); 12 – A. siamensis sp. n., male, paratype, genit. prep. 7397, Thailand (AB); Thailand (AB); 13 – A. siamensis sp. n., male, paratype, Thailand (AB); 14 – A. siamensis sp. n., female, paratype, genit. prep. 7399, Laos (AB).

FIGURES 18 – 20. Elydnodes, abdomen; Antitrisuloides spp., male genitalia. 18 – E. griseata sp. n., holotype, abdomen; 19 – A. catocalina, Thailand, genit. prep. 7394 GB (GB); 20 – A. siamensis sp. n., paartype, Thailand, genit. prep. 7395 GB (AB).

FIGURES 21 – 24. Elydnodes and Antitrisuloides spp., female genitalia. 21 – E. ornata, Philippines, genit. prep. 7664 GB (GB); 22 – E. griseata sp. n., paratype, Thailand, genit prep. 2 - 090311 VK (AB); 23 – A. catocalina, Laos, genit. prep. 7422 GB (AB); 24 – A. siamensis sp. n., paratype, Thailand, genit. prep. 7399 GB (AB).

FIGURES 25 – 30. Elydnodes and Antitrisuloides spp., distribution maps. 25 – Distribution area of the genera Elydnodes and Antitrisuloides; 26 – E. variegata; 27 – E. ornata; 28 – E. griseata sp. n.; 29 – A. catocalina; 30 – A. siamensis sp. n.