Bactra furfurana (Haworth, 1811)

Naik, Santhosh, Shashank, P. R. & Garg, Shivanshu, 2022, New records of Tortricidae (Lepidoptera) from Himachal Pradesh, India, Records of the Zoological Survey of India 122 (1), pp. 73-82 : 78-80

Bactra furfurana (Haworth, 1811)

( Figures 4, 9 , 14 , 19 )

1844. Bactra acutana Eversmann , ( Cochylis ), Fauna Lepid. Volgo-Ural., 529.

1995. Bactra cannisana Razowski, Acta zool. cracov. 38: 287.

1874. Bactra canuisana Milliere , ( Sciaphila ), Rev. Mag. Zool. 2 (3): 247.

1928. Bactra helophaea Meyrick, Exotic Microlepid. 2: 442.

1959. Bactra iranica Diakonoff , ( Bactra longinqua ssp.), Bijdr. Dierk., 29: 176.

1962. Bactra kurentsovi Diakonoff , ( Bactra furfurana var.), Zool. Verh. Leiden, 59: 28.

1846. Bactra lamana Lienig & Zeller , ( Phoxopteris ), Isis von Oken (Leipzig), 1846 (3): 257.

1959. Bactra longinqua Diakonoff, Bijdr. Dierk , 29: 174.

1949. Bactra nigrovittana Obraztsov , ( Bactra furfurana ab.), Mitt. mnch. ent . Ges. 35-39: 199.

1851. Bactra scirpana Herrich-Schaffer , ( Tortrix (Aphelia), Syst. Bearbeitung Schmett. Eur. 4: 243.

Type Locality: India, Assam, Shillong [now in Meghalaya] ( Pathania et al., 2020)

Material examined: INDIA: Himachal Pradesh: Nauni (30.8625118°N, 77.1679151°E, 1300m), 1♂, 13.ix.2018, Light trap coll. Santhosh.

Description: Ocellus well developed. Areas of vertex and apical vertex with light yellow rough scales, anteriorly projected. Three segmented medium sized labial palpi, clothed with light yellow interspersed with dark gray color scales. Second segment of labial palpi narrower at the base and gradually broaden at the apex with roughly projecting scales above and beneath, third segment short and whitishgray. Proboscis is medium and well developed.

Thorax: Smooth without any crest, covered with light gray scales. Three pairs of thorasic legs covered with dark gray interspersed with light yellow scales at dorsal surface and ventral surface covered by light yellow colored scales.

Wings: wingspan 16-18 mm. Forewings of male subrectangular, brown-ochreous to brown-ferruginous suffused with black, orange and grey scales form the reticulate markings at basal, subbasal, median and apical fasciae. Forewing acute apex, pale orange brown mixed to varying degrees with dark brown; Costa vaguely strigulated with whitish markings, thinly dotted with brown. Tornus bends towards the apex, but then turns obtusely to run parallel to the termen to reach the tornus. Another fascia from the middle of costa towards the tornus, meeting the above projection on the obtuse turn. Forewing subcosta joined basally, R1 arises from ½ length of discal cell, all veins are separate, R2, R3, R4, R5, M1 and M2 parallel to each other, R3 and R4 connate basally, M2, M3 and CuA1 connate basally, CuA1 bent downward basally, CuA2 arises from ¾ length of discal cell, CuP and 1A+2A present. Chorda at apex of discal cell from which R2, R3, R4 and R5 arises separately, M-stem is not line with M2. Hindwing brown to dark brown, outer cilia paler. Hindwing Sc+R1 nearly straight stalked at the basal stem of discal cell. Rs and M1 stalked, M2, M3, CuA1 arises from base of closing vein separately.

Abdomen: clothed by pale brown scales.

Male genitalia: Uncus short, slender, tapering apex and broad at base surrounded with small flat sclerotized bristles on lateral borders. Tegumen subrectangular, sclerotized and rounded apically. Gnathos broad. Valva subrectangular with rounded lobe at base. Juxta subtriangular broader apex and rounded base well. Sacculus sclerotized, projected upward, broader medially and narrow base and apex. Vinculum well sclerotized. Aedeagus small, stout, broad base and narrow apex. Saccus well developed.

Distribution: India (Himachal Pradesh, Meghalaya). Elsewhere: USA, UK, Japan and Taiwan ( Pathania et al., 2020).

Remarks: The closest species of B. furfurana are B. festa Diakonoff, 1959 and B. lacteana Caradja, 1916 . In B. furfurana forewing is distinctly reticulated beyond medial fascia while sickle shaped pattern in B. festa . Uncus and valva are relatively smaller in B. furfurana as compared to B. festa . In B. furfurana there are 5-9 spines at the sacculo-valvar junction while 2-4 spines in B. lacteana . The similar characters explained by Horak (2006) and Byun et al., (2006).

Figures

Figures 1–10. Adults and labial palp. Adults: 1. Clepsis rurinana Linnaeus, 1758, male; 2. Lumaria probolias (Meyrick, 1907), male; 3. Bactra venosana (Zeller, 1847), male; 4. Bactra furfurana (Haworth, 1811), male; 5. Gibberifera obscura (Diakonoff, 1964), male. Labial palpi, 6. C. rurinana; 7. L. probolias; 8. B. venosana; 9. B. furfurana; 10. G. obscura

Figures 11–15. Forewing and hind wing venation: 11. Clepsis rurinana Linnaeus, 1758, male; 12. Lumaria probolias (Meyrick, 1907), male; 13. Bactra venosana (Zeller, 1847), male; 14. Bactra furfurana (Haworth, 1811), male; 15. Gibberifera obscura (Diakonoff, 1964), male.

Figures 16–20. Male genitalia and aedeagus: 16. Clepsis rurinana Linnaeus, 1758; 17. Lumaria probolias (Meyrick, 1907); 18. Bactra venosana (Zeller, 1847); 19. Bactra furfurana (Haworth, 1811); 20. Gibberifera obscura (Diakonoff, 1964)