Styringomyia amazonica, Ribeiro, Guilherme Cunha, 2003

Ribeiro, Guilherme Cunha, 2003, Systematics of the Neotropical species of Styringomyia Loew (Diptera: Tipulomorpha: Limoniidae), Zootaxa 253, pp. 1-35: 24-25

publication ID 10.5281/zenodo.156947

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scientific name

Styringomyia amazonica

sp. n.

Styringomyia amazonica   sp. n.

MATERIAL EXAMINED. Holotype. Male, Brazil, Amazonas, Tefé, Alvaraes (ca. 3 º 24 S 64 º 45 W) 50m, 24.II. 1981, C. Young. ( CMNH). Pinned specimen, with dissected terminalia inside microvial with glycerin pinned with the specimen. Paratypes. 2 males plus 10 mating pairs, same data of holotype ( CMNH). Additional material. 19 males and 18 females, same data of holotype and paratypes ( CMNH); 1 male, Ecuador, Coca (Francisco de Orellana, 0º 28 S, 77 º00W), Napo, May 6, 1965, Luiz Peña ( USNM); 1 male, Ecuador, Coca, V­ 10­1965, Luiz Peña ( USNM).

ETYMOLOGY. The name of this species refers to its habitat at the Brazilian and Ecuadorian Amazonian Forest.

DESCRIPTION. Dimensions. See Table I. Morphology. Ninth sternite ( Fig. 36 View FIGURE 36 ): abruptly narrowed at apex. Tenth tergite ( Fig. 24 View FIGURES 18 ­ 25 ): posterior margin trilobulate, medial lobe triangular, longer than broad. Gonocoxite ( Figs. 35­36 View FIGURE 35 View FIGURE 36 ): distal half abruptly narrowed, rounded at apex; more stout and longest hairs along apical margin; thin and shorter hairs along the most proximal part of medial margin. Gonostylus ( Figs. 16 View FIGURES 14 ­ 17 , 35­36 View FIGURE 35 View FIGURE 36 ): a unique strongly sclerotized extension at apex of posterior margin ( Fig. 16 View FIGURES 14 ­ 17 , III + IV); anterior margin near straight; posterior margin slightly sinuous, rounded at its proximal portion; hairs of lateral face concentrated on a small protuberance near apex. Aedeagal sheath ( Fig. 36 View FIGURE 36 ): without lateral lobes; dorsal crest four­pointed, medial points separated by a wide space; ventral branches long, broad at base, narrowing gradually toward tip. Female cercus: narrowing gradually toward tip; ventral margin gently curved, not constricted.

REMARKS. The examined specimens of this new species deposited at USNM were identified by Charles Paul Alexander as belonging to S. dorsolineata   .


The Cleveland Museum of Natural History


Smithsonian Institution, National Museum of Natural History