Grapholita constricta 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 : 537-538

Grapholita constricta Reddy and Shashank sp. nov.

( Figs. 3 , 7 , 11 , 15, 16 )

urn:lsid:zoobank.org:act:C09D2E42-C164-49CB-9DE2-472D6F28CC84

Type material. J. Holotype. [ India] Karnataka: Bengaluru, Dommasandra lake , 12°52′26.5″N 77°44′52.8″E, 901 mt., 09.XI.2021, MVL, Karthik Reddy M (gen. slide no. L00051939)-coll. INPC.

Diagnosis. Grapholita constricta sp. nov. is closely related to G. saphinella Razowski & Becker. The adult of G. constricta sp. nov. is orangish brown with indistinct dorsal blotch, and ocelloid patch with black dashes, whereas G. saphinella is brownish grey with conspicuous dorsal blotch, and ocelloid patch indicated by a vertical leaden line above tornus. The male genitalia of G. constricta sp. nov. is characterized by a wide vinculum, weakly pointed hood-shaped tegumen with curved bristles at apex, valva with deep and narrow constriction reaching to 2/3 width, straight dorsal margin, basal excavation occupying 2/3 sacculus, and long and slender aedeagus weakly tapering towards apex, whereas G. saphinella has narrow vinculum, triangular tegumen sparsely hairy and tapered apically, valva constriction reaching to 1/2 width, slightly sinuate dorsal margin, basal excavation occupying 1/2 sacculus, and aedeagus broad basal half, then tapering towards apex.

Description. Male ( Fig. 3 ). Wingspan: 9.3 mm (n=1). Head ( Fig. 7 ). Ocellus large, chaetosema distinct. Vertex light brown, with long scales anteriorly projecting between antennae. Upper frons light brown to orangish white, with moderately long forward projecting scales; lower frons light brown, with minute upwardly appressed scales. Labial palpi moderately long (1.8 x diameter of eye), ascending; first segment light brown; second segment slender, slightly widened distally, light brown; third segment slender with pointed apex, light brown. Antenna moderately long, brown, reaching middle of forewing. Thorax. Posterior crest absent. Pronotal collar and tegulae light brown to orangish brown. Legs brown, unmodified. Wings. Forewing light brown mixed with orange white, subrectangular; male costal fold absent, costa evenly curved; apex rounded; termen slightly notched below apex, almost straight; apical half of costa with well-developed costal strigulae, strigulae 1 and 2 indistinct, strigulae 3-6 paired and separated by dark brown, strigulae 7-9 singled; interfascia between strigulae extending obliquely from costa to termen; ocelloid patch with four black dashes between M1 and CuA2, surrounded by greyish brown scales; outer margin with terminal strigulae, yellowish white between R5 and M1; underside light brown with yellowish white spots on costa and outer margin between veins. Hindwing pale brown to orange, subtrapezoidal, with well-developed cubital pecten; underside light brown. Abdomen ( Fig. 11 ). Brown. S2 with well-developed anterolateral processes. Coremata: S8 a small crescentic plate with a pair of short anterolateral projections; intersegmental sclerite bearing lever rods laterally, associated with pair of small tufts of long filiform scales.

Male genitalia ( Figs. 15, 16 ). Vinculum wide V-shaped band. Tegumen ovate, weakly sclerotized, hood-shaped apex with inward folded membrane bearing dense, curve, short bristles. Uncus and socii reduced. Gnathos medially fused, weakly sclerotized band. Valva elongate, ventral margin with a deep and narrow constriction beyond middle of valva length, with straightened dorsal margin; sacculus subrectangular, with large basal excavation occupying 2/3 sacculus, small costal process apicoventrally with moderately dense of short setae mixed with sparsely long setae; cucullus ovate, with dense bristles except dorsally. Juxta rhomboidal; caulis long; aedeagus moderately long, gradually narrow towards apex, slightly curve apical 1/3; vesica with two groups of deciduous spiniform cornuti near base and distal 1/3 of aedeagus.

Female. Unknown.

Distribution. Dommasandra ( India: Karnataka: Bengaluru).

Host. Unknown.

Etymology. The specific name constricta refers to deep ventral valval constriction.

Remarks. The most recent comprehensive review of the genus Grapholita was given by Komai (1999). Most of the Grapholita species are recognized by short, upcurved labial palpi, absence of sexual dimorphism in hindwing, well-developed coremata, with paired tufts of filiform or lanceolate scales, intersegmental ventral sclerite usually with a pair of long levers, and with a small crescent-shaped eighth sternite with a pair of short projections laterally, and male genitalia with weakly sclerotized tegumen, absence of uncus and socius, valva constricted near middle with rounded or ovate cucullus.

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.