Styringomyia atlantica, Ribeiro, Guilherme Cunha, 2003

Ribeiro, Guilherme Cunha, 2003, Systematics of the Neotropical species of Styringomyia Loew (Diptera: Tipulomorpha: Limoniidae), Zootaxa 253, pp. 1-35 : 18

Styringomyia atlantica sp. n.

MATERIAL EXAMINED. Holotype. Male, Brazil, Bahia, CEPEC­CEPLAC, Itabuna (14º48S, 39º18W), cacao leaf litter, 1970­72. J. A. Winder ( USNM). Entire specimen mounted on slide. Paratype. Male, same data of holotype ( USNM).

ETYMOLOGY. The name of this species refers to its habitat at the Brazilian Atlantic Rain Forest.

DESCRIPTION. Dimensions. See Table I. Morphology. Ninth sternite: narrowing gradually toward tip. Tenth tergite ( Fig. 20 ): posterior margin V­shaped. Gonocoxite ( Fig. 29 ): conical, narrowing gradually toward tip; short and stout hairs along posterior part of medial margin to apex; other hairs slender, the longest along lateral margin, the shortest proximally on medial margin. Gonostylus ( Figs. 12 , 29 ): almost as long as broad, with four extensions; extension I ( Fig 12 , I) strongly sclerotized, bearing two apical spine­like hair; extension II ( Fig. 12 , II) shorter than the others, strongly sclerotized, bearing a short apical spine­like hair; extension III ( Fig. 12 , III) approximately triangular in shape; extension IV ( Fig. 12 , IV) rounded; slender hairs concentrated near base of extensions III and IV and near the center of the medial face of gonostylus. Aedeagal sheath: with two lateral protuberances, the most dorsal rounded, the most ventral longer than broad, oblique in position; details of dorsal crest not visible in the available specimens; ventral branches short.

Figures

FIGURE 29. Styringomyia atlantica sp. n., holotype. Aspect of part of terminalia. Specimen on slide. Abbreviations: goncx, gonocoxite; gonst, gonostylus.

FIGURES 18 ­ 25. Tenth tergite (male) of Neotropical Styringomyia species. 18. S. mystica, specimen from Peru (Madre de Dios). 19. S. youngi sp. n., holotype. 20. S. atlantica sp. n., paratype. 21. S. paulista, holotype (modified from Alexander, 1946). 22 S. simplex, specimen from Brazil (Mato Grosso, Diamantino). 23. S. maya sp. n., paratype. 24. S. amazonica sp. n., holotype. 25. S. manauara sp. n., paratype. Abbreviations: T 9, ninth tergite; T 10, tenth tergite.

FIGURES 10 ­ 13. Gonostylus of Neotropical Styringomyia species. Lateral and medial faces, respectively, on left and right sides of each figure. 10. S. mystica, holotype. 11. S. youngi sp. n., paratype. 12. S. atlantica sp. n., holotype. 13. S. paulista, holotype. The numbers refers to the homology system applied to the extensions of the gonostylus.