Eucosma paragemellana Gilligan & Wright

Gilligan, Todd M. & Wright, Donald J., 2013, The type species of Eucosma Hübner (Lepidoptera: Tortricidae: Eucosmini), Zootaxa 3630 (3), pp. 489-504 : 498-500

Eucosma paragemellana Gilligan & Wright , new species

( Figs. 12–13 , 27 , 30 , 34)

Diagnosis. Eucosma paragemellana ( Figs. 12–13 ) is indistinguishable from E. gemellana ( Figs. 8–11 ) in forewing color and maculation, but E. paragemellana is smaller (mean FWL = 6.4 vs. 9.3 mm) and has a shorter costal fold (CFR = 0.25 vs. 0.42). Males differ in the shape and setation of the valva ( Figs. 26, 27 ): the neck in E. paragemellana is somewhat narrower (NR = 0.19 vs. 0.28), the saccular angle is slightly more acute (SA = 78 vs. 89), the anal angle is more elongate, and the setae on the medial surface of the cucullus extend to the vertex of the anal angle. Females differ in the locations of the indentations in the posterolateral margins of sternum 7 in relation to the lamella postvaginalis (Figs. 33, 34): aligned with the posterior margin in E. paragemellana , aligned with the midpoint in E. gemellana . Differences between E. paragemellana and E. circulana are discussed above in the diagnosis of the later taxon.

Description. Head and Thorax as in E. gemellana except: 3 FWL 5.0– 7.6 mm (mean = 6.3, n = 56), AR = 2.66, CFR = 0.25; Ƥ FWL 6.6–7.3 mm (mean = 6.7, n = 8), AR = 2.70. Abdomen. Male genitalia ( Fig. 27 ) (n = 9): Uncus moderately produced and clearly differentiated from dorsolateral shoulders of tegumen; socii fingerlike, phallus stout, moderately long, and tapering distally; anellus approximate to phallobase; vesica with 25–28 deciduous cornuti; valva with costal margin straight to weakly concave, ventral emargination deep, proximal extremity of neck narrow, NR 0.17–0.25 (mean = 0.19, n = 9), ventrolateral margin of neck weakly scooped out, saccular corner angular, SA 65–86 (mean = 78, n = 9); cucullus with apex weakly developed, distal margin weakly convex, ventral projection long and narrow; setation of medial surface of cucullus extending to spiniform seta at vertex of anal angle, coarse toward distal margin and anal angle grading to fine toward costal margin and apex. Female genitalia ( Fig. 30 , 34) (n =4): As in E. gemellana except that the indentations of the posterolateral margins of sternum 7 align with the posterior margin of the lamella postvaginalis.

Holotype ( Fig. 13 ). 3, Alabama, Baldwin Co., Weeks Bay Estuarine Reserve, D. J. Wright, 22 June 2008, USNM.

Paratypes. ALABAMA: Baldwin Co., Weeks Bay Estuarine Reserve, R. L. Brown, 20 June 2001 (2 3) MEM; D. J. Wright, 21 June 2008 (5 3, slides DJW 2050, 3123, 3124), 22 June 2008 (6 3; 1 Ƥ, slide DJW 2773) DJW; T. M. Gilligan, 21 June 2008 (5 3), 22 June 2008 (2 3; 1 Ƥ) TMG; L. D. Gibson, 21 June 2008 (4 3) LDG. FLORIDA: Pensacola, 11–14 October 1914 (1 Ƥ, slide DJW 1346) AMNH. MISSISSIPPI: Harrison Co., Pass Christian, R. Kergosien, 6 August 1994 (1 3, slide TMG 612) MEM; Jackson Co., 1 mi. W Hwy 90 & 57, R. L.

Brown, 5 April 1991 (1 3), 12 April 1991 (1 3), D. M. Pollock, 5 April 1991 (1 3) MEM; I-10 at Escatawpa River, R. L. Brown, 13 April 1991 (1 3, slide TMG 607) MEM; I-10 1 mi. W Ala., T. L. Schiefer, 22 July 1989 (1 3, slide DJW 2006; 3 Ƥ) MEM, DJW; Sandhill Crane NWR, J. A. MacGown, 29 August 1995 (3 3), 7 September 1994 (3 3, TMG 605; 1 Ƥ, slide TMG 610) MEM; Grand Bay Savannah, R. L. Brown and E. L. Martinez, 30 April 2004 (4 3), J. A. MacGown, 6 September 1994 (1 3) MEM. NORTH CAROLINA: Pender Co., Holly Shelter Game Land, J. B. Sullivan, 1 July 1998 (2 3, slide TMG 595), 7 August 1997 (4 3), 26 August 1997 (9 3, slide TMG 603; 1 Ƥ, slide TMG 596), 26 September 1995 (1 3) USNM.

Distribution ( Fig. 35 ) and Flight Period. Gulf Coast of Alabama, Mississippi, and the panhandle of Florida; coast of North Carolina; April – September.

Figures

FIGURE 35. Distribution map for E. circulana, E. gemellana, E. paragemellana, and E. fraudabilis.

FIGURES 4 – 15. Eucosma circulana and closely related species. 4, Hübner’s illustration. 5 – 7, E. circulana (5, Neotype). 8 – 11, E. gemellana. 12 – 13, E. paragemellana (13, Holotype). 14 – 15, E. fraudabilis (15, Holotype).

FIGURES 25 – 28. Male genitalia. 25, E. circulana. 26, E. gemellana. 27, E. paragemellana. 28, E. fraudabilis. Scale bar = 0.5 mm.

FIGURES 29 – 31. Female genitalia. 29, E. circulana. 30, E. paragemellana. 31, E. fraudabilis. FIGURES 32 – 34. Sterigma and sternum 7. 32, E. circulana. 33, E. gemellana. 34, E. paragemellana. Scale bar = 0.5 mm.