Acanthoclita bengaluruensis Reddy and Shashank, 2022

Reddy, Karthik M. & Shashank, P. R., 2022, Three new species of the tribe Grapholitini (Lepidoptera: Tortricidae: Olethreutinae) from India, Zootaxa 5219 (6), pp. 534-542 : 535-537

Acanthoclita bengaluruensis Reddy and Shashank sp. nov.

( Figs. 1, 2 , 6 , 9, 10 , 13, 14 , 19 )

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Type material. J. Holotype. [ India] Karnataka: Bengaluru, Kommasandra , 12°52′22.7″N 77°44′46.4″E, 898 mt ., 26. VII .2021 , MVL, Karthik Reddy M (gen. slide no. L00051806)-coll. INPC. Paratypes. 1♀, India: Karnataka: Bengaluru, Dommasandra lake , 12°52′26.5″N 77°44′52.8″E, 901 mt ., 20.XI.2021, MVL, Karthik Reddy M (gen.slide no. L00051805); 1J, 1♀, India: Karnataka: Bengaluru, Dommasandra lake , 12°52′26.5″N 77°44′52.8″E, 901 mt ., 09. VIII .2021 , MVL, Karthik Reddy M; 1♀, India: Karnataka: Bengaluru, Thigala Chowdadenahalli , 12°53′16.9″N 77°44′34.7″E, 918 mt., 27. VII .2021 , MVL, Karthik Reddy M; 1♀, India: Karnataka: Bengaluru, Dommasandra lake , 12°52′26.5″N 77°44′52.8″E, 901 mt., 01.IX.2021, MVL, Karthik Reddy M; 1♀, India: Karnataka: Bengaluru, Dommasandra lake , 12°52′26.5″N 77°44′52.8″E, 901 mt ., 09.XI.2021, MVL, Karthik Reddy M-coll. INPC .

Diagnosis. Acanthoclita bengaluruensis sp. nov. is closely related to A. trichograpta (Meyrick) from Australia. The forewings of A. trichograpta have a well-developed dorsal blotch but absent in A. bengaluruensis sp. nov.. In male genitalia, cucullus of A. bengaluruensis sp. nov. has a constriction in inner margin, obtusely curved outer margin, isolated spine close to margin at base, and aedeagus is long and strongly curved medially, whereas in A. trichograpta , cucullus is evenly curved, crescentic, with isolated spine more distant from margin, and weakly curved short aedeagus. The female genitalia of A. bengaluruensis sp. nov. is characterized by ductus bursae 2/3 length of corpus bursae, and larger signa, whereas A. trichograpta has ductus bursae less than half the length of corpus bursae, and with shorter signa.

Description. Male ( Fig. 1 ). Wingspan: 15-16 mm (n=2). Head ( Fig. 6 ). Ocellus large, chaetosema welldeveloped. Vertex dark brownish orange, with long scales anteriorly projecting between antenna. Upper frons brownish orange, with anteriorly projecting moderately long scales; lower frons light brownish orange, with minute, upwardly appressed scales. Labial palpi moderately long (1.4 x diameter of eye); first segment light brownish orange; second segment strongly widened distally with long dark brownish orange scales along ventral margin, and apically along dorsal margin; terminal segment brownish orange, short and stout, downward pointing, concealed within the long scales from distal part of second segment. Antenna filiform, moderately long, light brown, reaching middle of forewing. Thorax. Posterior crest absent. Pronotal collar and tegulae dark brownish orange with pale brownish orange scale tips. Legs orange with dark brown tarsal rings, unmodified. Wings. Forewing brownish orange, elongate, subrectangular; male costal fold absent, costa evenly curve; apex rounded; termen straight; costal strigulae fine, yellowish white separated by fine brown marks along costa, ending with a conspicuous dark grey to brown rounded spot at apex edged by yellowish white strigulae 9 connected with terminal strigulae between R5 and M1; basal fascia indistinct; subbasal fascia indistinct; median fascia extending obliquely from costa to inner margin near tornus, light brown mixed with brownish orange, with dark drown spot beyond median fascia between base of M1 and M3; ocelloid patch with silvery grey striae between R5 and CuA2, surrounded by row of longitudinal, short, parallel black lines extending in a curve from apical 3/4 of costa to near tornus; with a dark brown subrectangular bar along termen below apical dark spot; underside light brown with yellowish grey spots on costa Hindwing greyish brown with sparsely scaled, translucent basal half, well-developed cubital pecten, and anal margin with modified scaling between CuA2 and 1A+2A, greyish brown scales; underside light brown Abdomen ( Figs. 9, 10 ). greyish brown scales dorsally, with greyish orange anal tuft. S2 with well-developed anterolateral processes. Coremata, S8 a small crescentic plate, with U-shaped rib posteriorly; intersegmental sclerite associated with small tufts of long, broad, distally rounded scales laterally; T8 with strongly sclerotized T-shaped plate.

Male genitalia ( Figs. 13, 14 ). Vinculum a weakly sclerotized band. Tegumen subtriangular, weakly sclerotized. Uncus and socii reduced. Gnathos band-like, arising at middle of tegumen. Valva long and slender, constricted ventromedially; sacculus with large basal excavation; costal process well-developed; cucullus with a constriction apicodorsally 1/3, upcurved apically, obtusely curved outer margin, with rows of sparsely, shorter spines pointing outward and longer spines pointing inward, ventrobasally with one conspicuously long and narrow. Juxta subtriangular; caulis a well-sclerotized curved band, moderately long; aedeagus long, slender, tapering towards apex, strongly bent medially and apically weakly sinuate; vesica with a bundle of deciduous, lanceolate cornuti, and a distal series of short cornuti.

Female ( Fig. 2 ). Wingspan: 16-17 mm (n=5). As male, but slightly darker forewing colour, without modified scales; frenulum of three bristles.

Female genitalia ( Fig. 19 ). Ovipositor lobes elongate. Hind margin of S7 rounded-concave; anterior margin with a sclerotized curved band. Ostium a small semi-circular opening beyond hind margin of S7. Sterigma semicircular ring surrounding ostium. Ductus bursae membranous, slender, about 2/3 length of corpus bursae, with a weak sclerotization just below ostium; origin or ductus seminalis from posterior 1/3 of ductus bursae. Corpus bursae ovate, with two short horn-shaped signa, pointed apex.

Distribution. Kommasandra, Dommasandra, Thigala Chowdadenahalli ( India: Karnataka: Bengaluru).

Host. Unknown.

Etymology. The specific name refers to the name of the type locality Bengaluru, Karnataka, India.

Remarks. Diakonoff (1982) took into consideration the characters of head, wing venation and genitalia of both sexes while erecting the genus Acanthoclita . Most of the Acanthoclita species are identified and characterized by various apomorphies such as forewing pattern and venation, hindwing with translucent base and modified anal region, male genitalia with fused gnathos and tegumen, valva with crescentic to falcate cucullus and isolated spines at base of cucullus, female genitalia of more derived species with complex sterigma around ostium with sclerotized, funnel-shaped posterior end of ductus bursae, and simple sterigma with a patch of modified scales on each side in less derived species of the genus which it shares with Matsumuraeses Issiki, 1957 .

Figures

FIGURES 1–5. Adults. 1, Acanthoclita bengaluruensis, holotype male. 2, A. bengaluruensis, paratype female. 3, Grapholita constricta, holotype male. 4, Thaumatotibia ramamurthyi, holotype male. 5, T. ramamurthyi, paratype female. Scale bars: 2 mm.

FIGURES 6–8. Heads of holotype males. 6, Acanthoclita bengaluruensis. 2, Grapholita constricta. 3, Thaumatotibia ramamurthyi. Scale bars: 0.5 mm.

FIGURES 9–12. Last abdominal segments of holotype males. 9, 10, Acanthoclita bengaluruensis. 11, Grapholita constricta. 12, Thaumatotibia ramamurthyi. Scale bars: 1 mm.

FIGURES 13–18. Male genitalia and aedeagus of holotypes. 13, 14, Acanthoclita bengaluruensis. 15, 16, Grapholita constricta. 17, 18, Thaumatotibia ramamurthyi. Scale bars: 0.2 mm.

FIGURES 19–20. Female genitalia of paratypes. 19, Acanthoclita bengaluruensis. 20, Thaumatotibia ramamurthyi. Scale bars: 0.5 mm.