Styringomyia simplex Alexander, 1945

Ribeiro, Guilherme Cunha, 2003, Systematics of the Neotropical species of Styringomyia Loew (Diptera: Tipulomorpha: Limoniidae), Zootaxa 253, pp. 1-35 : 20-21

Styringomyia simplex Alexander, 1945

Styringomyia simplex Alexander, 1945b: 241 , Figure 9 (male terminalia); 263 (description).

MATERIAL EXAMINED. Holotype. Male, British Guyana, Bartica (6º25N, 58º 37W), January 28, 1913, H. S. Parish ( USNM). Part of specimen pinned; other parts and terminalia mounted on slide. Paratypes. 1 male, Peru, Junin, Satipo, Jauja (10º19S, 74º23W), 800­900 m, XI­10­1940, Paprzychi ( USNM); 1 male and 1 female, Peru, Junin, Satipo, Jauja, 800­900 m, IV­5­1941, Paprzycki ( USNM). Additional material. 1 male, Peru, Huanuco, Fundo Sinchono, Cordillera Azul (8­10ºS, 74­76ºN), 1500 m, VIII­4­1947, J. M. Schunke ( USNM); 1 male, Peru, Loreto, Cerra Azul, Rio Ucayali (8­10ºS, 74­76ºN), IV­ 30­1947, J. M. Schunke ( USNM); 1 male, PERU: Madre de Dios, Parque Manu, Pakitza, 11º56S 71º18W, 250m, stream @ Tr 1­13, IX­20­23­1989; MT, N Adams ( ANSP); 2 males and 1 female, Brazil: Mato Grosso, Diamantino (14º25S, 56º29W), Facienda São João, 5. II. 1981, 450m, C. Young ( CMNH); 1 male and 1 female, Brazil: Mato Grosso, Diamantino (14º25S, 56º29W), Facienda São João, 6. II. 1981, 450m, C. Young ( CMNH).

DESCRIPTION. Dimensions. See Table I. Morphology. Ninth sternite ( Fig. 32 ): abruptly narrowed at apex. Tenth tergite ( Fig. 22 ): posterior margin trilobulate; medial lobe triangular, broader than long. Gonocoxite (Figs. 31­32): distal half conical, abruptly narrowed; longest and more stout hairs along the distal parts of dorsal margin to apex; other hairs slender, variable in length, the longest along the lateral margin. Gonostylus ( Figs. 14 , 31­32): more or less S­shaped, bearing two strongly sclerotized apical extensions ( Fig. 14 , III, IV); extension III less developed than extension IV; medial face with a long and stout hair originating near base of extension IV; other hairs of medial face slender and shorter; hairs of lateral face long and slender. Aedeagal sheath (Figs. 31­32): without lateral lobes; dorsal crest four­pointed; space between medial points narrow; apex of each point disposed nearly side by side; ventral branches long, broad at base, abruptly narrowed at tip. Female cercus ( Fig. 9 ): narrowing gradually toward tip; anterior portion of ventral margin interrupted by a constriction.

Figures

FIGURE 32. Styringomyia simplex, male specimen from Brazil (Mato Grosso, Diamantino). Three­dimensional structure of terminalia, dorsolateral view. Abbreviations: aed, aedeagus; aed sh, aedeagal sheath; goncx, gonocoxite; gonst, gonostylus; S 9, ninth sternite, vb, ventral branches of aedeagal sheath.

FIGURES 8 ­ 9. Female terminalia of Neotropical Styringomyia species. Lateral view. 8. Allotype of Styringomyia paulista. 9. Paratype of Styringomyia simplex. Specimens on slides. Abbreviations: cerc, cercus; hyp vlv, hypogynial valve; tg 10, tenth tergite.

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 14 ­ 17. Gonostylus of Neotropical Styringomyia species. Lateral and medial faces, respectively, on left and right sides of each figure. 14. S. simplex, holotype. 15. S. maya sp. n., specimen from Ecuador (Manabi, Palmar). 16. S. amazonica sp. n., specimen from Ecuador (Francisco de Orellana). 17. S. manauara sp. n., paratype. The numbers refers to the homology system applied to the extensions of the gonostylus.