Eucosma gemellana Heinrich

Gilligan, Todd M. & Wright, Donald J., 2013, The type species of Eucosma Hübner (Lepidoptera: Tortricidae: Eucosmini), Zootaxa 3630 (3), pp. 489-504 : 497-498

Eucosma gemellana Heinrich , new status

( Figs. 8–11 , 26 , 33)

Eucosma circulana gemellana Heinrich 1923:96 , Fig. 150.

Eucosma circulana gemellana ; McDunnough 1939:46; Powell 1983:34; Brown 2005:317.

Diagnosis. Eucosma gemellana ( Figs. 8–11 ) is similar in appearance to E. circulana ( Figs. 5–7 ) and E. paragemellana ( Figs. 12–13 ); maculation and genitalic differences are discussed in the diagnoses under the latter two species.

Description. Head. Frons and vertex creamy white; labial palpus creamy white with some pale brown tinting on lateral surface; antenna creamy white. Thorax. Dorsal surface creamy white to pale brown; fore- and mid-legs with anterior surfaces pale brown, posterior surfaces creamy white; hind-legs creamy white; tarsi with weakly contrasting white annulations. Forewing ( Figs. 8–11 ): 3 FWL 7.2–11.0 mm (mean = 9.3, n = 48), AR = 2.91, CFR = 0.42; Ƥ FWL 8.1–12.3 mm (mean = 10.2, n = 13), AR = 2.88; costal margin weakly arched; apex acute; termen weakly concave; dorsal surface as in E. circulana except: most specimens have a creamy white subcostal streak from base to mid-wing and creamy-white streaking on cell, CuP, and A1+2, the anterior one-half of the ocelloid region has variably expressed dark streaks along the medial veins, the ocellus has white edging along its anterior margin and lacks metallic-gray scaling separating the distal two columns of black dots, and males have a thin graybrown streak on the costa from base to distal end of fold. Hindwing: brownish gray. Abdomen. Male genitalia ( Fig. 26 ) (n = 9): Uncus weakly produced but distinguishable from dorsolateral shoulders of tegumen; socii fingerlike, phallus stout, moderately long, tapering distally; anellus approximate to phallobase; vesica with 20–40 (mean = 28, n = 4) deciduous cornuti; valva with costal margin weakly concave, ventral emargination deep and U-shaped, proximal extremity of neck narrow, NR 0.23–0.36 (mean = 0.28, n = 9), ventrolateral margin of neck scooped out (indicated by dashed line in Fig. 26 ), saccular corner angular, SA 85–92 (mean = 89, n = 9); cucullus with apex rounded and moderately produced, distal margin weakly convex of nearly uniform curvature, ventral development long and narrow, setation of medial surface coarse toward distal margin and anal angle grading to fine toward costal margin and apex; anal angle with one spiniform seta at vertex that is isolated from nearby setae on medial surface of cucullus. Female genitalia (Fig. 33) (n = 3): As in E. circulana except the posterior projections of sternum 7 extend beyond posterior margin of the sterigma, and the indentations in the posterolateral margins of sternum 7 are aligned with the midpoint of the lamella postvaginalis.

Holotype. 3, Florida, [Pinellas Co.], St. Petersburg, May, slide 72903, USNM.

Paratypes. FLORIDA: [Pinellas Co.], St. Petersburg, R. Ludwig, 11 April 1914 (1 3); Morrison, 1884 (1 3) [determined as Paedisca circulana by Walsingham], USNM.

Additional material examined. FLORIDA: Charlotte Co., Punta Gorda, H. Ramstadt, 1–10 May 1903 (1 3) USNM; Citrus Co., Sandhill Crane NWR, H. D. Baggett, 2 June 1984 (1 3) MEM; Hwy 480 W Floral City, H. D. Baggett, 2 June 1984 (1 3) FSCA; Lecanto, J. Glaser, 1 October 1996 (1 3, slide TMG 601) USNM; Hernando Co., Croom Wildlife Preserve, W. L. Adair, 8 February 1989 (1 3) FSCA; Highlands Co., Highlands Hammock St. Park, G. J. Balogh, 5 November 1987 (1 3, slide DJW 330) DJW; Hillsborough Co., USF Ecology Area, W. L. Adair, 23 May 1992 (1 Ƥ) FSCA; Tampa, H. D. Baggett, 27 April 1984 (1 3) FSCA, (1 3, slide RLB 1781), 27 April 1989 (1 3) MEM, 9 October 1933, (1 3) USNM; Stemper, G. Krautwurm, 14 February 1911 (1 3), 7 October 1911 (1 3) CMNH, 1– 7 July (1 3) USNM; Lee Co., Ft. Myers, 22 April 1912 (1 Ƥ, slide DJW 3168) AMNH; Levy Co., Goethe State Forest, J. E. Hayden & G. E. Lee, 15 June 2012 (1 3) FSCA; Liberty Co., Wilma, J. Glaser, 30 September 1996 (2 3, slide 141872) USNM; Marion Co., Ocala NF, Lake Delancy, J. S. Kutis, 10 April 1991 (1 3), 23 June 1991 (1 Ƥ), 28 June 1991 (1 3, slide TMG 606), 11 September 1991 (3 3), 21 September 1991 (1 3), 9 October 1991 (1 3, slide RLB 1783), 18 October 1990 (1 3) MEM; H. D. Baggett, 10 April 1991 (1 3), 16 April 1990 (1 3), 22 June 1991 (2 3), 28 July 1991 (1 Ƥ), 11 August 1990 (1 3), 17 September 1991 (1 Ƥ, slide RLB 1782), 16 October 1990 (3 3), 18 October 1990 (1 3, slide TMG 611), 19 October 1991 (2 3) MEM; W. L. Adair, 31 October 1992, (1 3, 1 Ƥ) FSCA; Orange Co., Winter Park, A. B. Klots, May 1946 (1 3; 1 Ƥ, slide DJW 1179), September 1946 (1 Ƥ, slide DJW 1347) AMNH; Pinellas Co., St. Petersburg, 16–23 February (2 3, slide TMG 597), 1– 7 March (1 3, slide TMG 598), 16–23 October (2 3) USNM; Putnam Co., Lake Delancy, H. D. Baggett, 2 March 1985 (1 3) MEM; U. of Florida Preserve, Welaka, H. D. Baggett, 19 September 1987 (1 Ƥ) MEM; Welaka, D. C. Ferguson, 17 April 1973 (1 3, slide 124081) USNM; Santa Rosa Co., FAMU Biological Station near Holt, J. B. Heppner, 25–28 August 1986 (1 Ƥ) FSCA; Volusia Co., Cassadaga, S. V. Fuller, 3 May 1965 (1 3), 1 July 1964 (1 3), 3 September 1996 (1 Ƥ), 9 October 1962 (1 Ƥ), 15 December 1965 (1 3) FSCA.

Distribution ( Fig. 35 ) and Flight Period. Florida, February – December.

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.