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2025
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| Accés en línia: | https://doi.org/10.5281/zenodo.15563255 |
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- <p><b><i>Cranionycta</i> (<i>Nefrendinycta</i>) <i>falcata</i> sp. nov.</b></p><p>urn:lsid:zoobank.org:act: E1F1C810-381D-42D7-8D4A-00E0B59FFFD7</p><p>(Figs 54, 77, 127)</p><p><b>Holotype.</b> Male, Nepal, Syangja district, 14 km E of Syangja, 1150 m, 25.vii.1995, leg. G. Csorba, No. 109, slide No.: KA 2429m (GR).</p><p><b>Diagnosis.</b> The single known male specimen of <i>C</i>. (<i>N</i>.) <i>falcata</i> (Fig. 54) is externally similar to <i>C</i>. (<i>N</i>.) <i>lobophorus</i> (Fig. 25), <i>C</i>. (<i>N</i>.) <i>nigralbata</i> (Fig. 46) and <i>C</i>. (<i>N</i>.) <i>boursini</i> (Fig. 47), however, it can be distinguished by its somewhat less variegated, cool ochreous shading of the forewing; the somewhat more contrasting medial fascia; the more conspicuous, thicker blackish remnant of the inner margin of the orbicular stigma; from <i>C</i>. (<i>N</i>.) <i>lobophorus</i> and <i>C</i>. (<i>N</i>.) <i>nigralbata</i> also by the somewhat wider inner part of the medial field; the more curved medial line; and the more or less evenly crenulate postmedial line. It may be also distinguished from <i>C</i>. (<i>N</i>.) <i>boursini</i> by the blackish spot on the thorax; the more indistinct wing pattern elements; the more greyish suffused forewing; and the darker, more conspicuous subterminal line.</p><p>The male genitalia (Fig. 77) differ from those of the similar species by the widest at base, uniformly narrowing and apically much slender (not abruptly pointed) uncus; the widest in the basal one-third and strongly billhook-shaped valvae with straighter ventral margin, and somewhat wavier costa; and the medial sclerite almost reaches the ventral margin, not running parallel with the ventral margin.</p><p>The male terminal abdominal segments (Fig. 127) can be distinguished from those of the similar species by the slightly more trapezoidal 8 th sternite with wider distal edge without sclerotized patch, and the somewhat more rounded but distally abruptly cut off window.</p><p><b>Description.</b> Imago (Fig. 54). Wingspan 28 mm. <i>Head.</i> Relatively large; 2 nd segment of palpus longer than 3 rd; antennae filiform. <i>Thorax.</i> Moderately wide, dark brownish-grey with whitish patches and large black anterior spot; patagia dark brownish-grey with blackish outline; tegulae blackish. <i>Abdomen.</i> Dark greyish with some darker middorsal scale tufts. <i>Wing</i>. Forewing moderately wide, apically obtuse, dark ochreous; basal spot blackish, small, irregularly shaped; basal streak indistinct, blackish, wide, short, wedge-shaped; tornal streak blackish, long, indistinct between medial and postmedial lines, uniformly wide between postmedial and terminal lines; apical dash absent; basal line blackish, double, outer line conspicuously wider than inner line, inner line very short, dot-like, filled with dark ochreous; antemedial line double, reduced with three larger indistinct blackish spots at costal area and tiny blackish spot at outward edge of inner margin, and filled with whitish scales; medial line blackish, zigzag, fused with wide blackish and outwardly diffuse medial fascia; postmedial line double, crenulate, inner line reduced, greyish-black, outer line blackish, more prominent with narrow black stripe between veins R3 and M2, filled with whitish and suffused with greyish scales; subterminal line wide, zigzag, indistinct, whitish-grey; terminal line whitish, interrupted by tiny black on veins, longer on veins M1, Cu1 and Cu2; basal field dark ochreous, relatively wide, joined to subbasal patch; subbasal patch whitish-ochre, wide and short; suprabasal patch reduced, darker ochreous, more or less oval; antemedial field dark ochreous with conspicuous blackish patch at costa and suffused with blackish at inner margin; medial field inwardly, whitish-ochre suffused with darker greyish-ochre in costal area, outwardly dark whitish-grey-ochre, inner part moderately wide, outer part narrow; subterminal field dark ochreous with large, blackish-grey, squarish patches in costal area, obscure between veins M1 and M2 and around tornal streak; terminal field narrow, blackish-grey suffused with whitish scales; orbicular stigma reduced, with blackish, curved line inwardly; reniform stigma moderately large, reduced, dark ochreous, inwardly suffused with blackish scales, outlined with series of tiny blackish spots; four whitish spots at costa between medial fascia and terminal line, gradually decreasing in size towards apex, first more or less rectangular, others narrow; tornal patch blackish, small; fringe whitish with greyish patches. Hindwing rounded, apically pointed; fully dark greyish-brown; marginal band slightly darker; postdiscal line and discal spot absent; tornal patch slightly darker greyish-brown; fringe whitish with greyish patches.</p><p>Male genitalia (Fig. 77). Uncus moderately short, sclerotized, widest at base, hairy; apex hooked. Scaphium moderately sclerotized, pliers-like; subscaphium weakly sclerotized. Tegumen long with lobe-like peniculus covered with dense long hairs. Saccus sclerotized, V-shaped. Juxta simple, moderately sclerotized, widest at base, shield-shaped. Manica double, moderately sclerotized lobe-like extension with spinulose structure supporting numerous small spinules. Transtilla short, rod-like, uniformly wide, sclerotized. Valvae elongate, narrow, widest at base then more or less parallel, moderately sclerotized, strongly billhook-shaped, rounded apically with wide, dense corona; costa somewhat wavy; sacculus narrow, sclerotized, ventral margin curved; clavus slightly curved; valval androconial apparatus absent; medial sclerite long, straight, slightly wavy sclerotized running to ventral margin and with tiny sclerotized basal protrusion. Phallus simple, tubular, moderately sclerotized; carina slightly more sclerotized, wide, short, wedge-shaped. Vesica as long as phallus, moderately wide, essentially tubular with three basal diverticula one of them bearing spinulose patch, distal diverticulum larger, elongate; tooth-like cornuti absent from mid-lateral surface.</p><p>Male 7 th and 8 th abdominal segments (Fig. 127). 7 th sternite quadrangular, wider than long, evenly sclerotized; proximal edges slightly wavy, laterally extended; lateral sides proximally concave, distally convex with contrasting margin; distal edge slightly concave.7 th tergite roughly trapezoidal, wider than long; proximal half slightly sclerotized, distal half with slightly more sclerotized semi-circular band; proximal edge more or less straight with two fused, long, curved, stronger sclerotized rods; lateral sides proximally concave, distally convex with contrasting margin; distal edge slightly concave. 8 th sternite trapezoidal with rounded corner, somewhat longer than wide; window relatively large, rounded, distally abruptly cut off, with wide, laterally pointed, slightly constricted sclerotized stripe; proximal edge slightly arched with more sclerotized tiny patch in middle; lateral sides widened distally, strongly widened and fused in distal half; distal edge concave. 8 th tergite triangular, more sclerotized proximally, longer than wide; window more or less rhomboidal with pointed peak proximally; proximal edge short and pointed; lateral sides abruptly narrowing towards distal edge, narrowest in middle with wide, triangular spur-like distal end; distal edge concave. Anterolateral sclerites of 8 th segment relatively long, sclerotized, slightly curved rods with tiny, membranous spur-like extension close to junction with 8 th sternite.</p><p><b>Distribution.</b> The new species is known only from its type locality, where occurs sympatrically with <i>C</i>. (<i>N</i>.) <i>versicolor</i>.</p><p><b>Etymology.</b> The name “ <i>falcata</i> ” refers to the billhook-shaped valvae of the male.</p>