Anapausis mayana, Amorim, Dalton De Souza & Balbi, Maria Isabel P. A., 2006

Amorim, Dalton De Souza & Balbi, Maria Isabel P. A., 2006, A review of Anapausis Enderlein (Diptera: Scatopsidae) in the Neotropical Region, with four new species and comments on the phylogeny of the genus, Zootaxa 1300, pp. 1-29 : 11-14

Anapausis mayana sp. nov.

( Figs. 12–19 )

Material analyzed. HOLOTYPE male, PANAMA, C.Z. Barro Colorado I., July 1967, W.W. Wirth, light trap. PARATYPE, 1 female, PANAMA, C.Z., Colón (NHM). Types at the NHM.

Diagnosis. Vesica largely developed, sternite 10 divided into pair of digitiform distal sclerites, parameres well sclerotized, distally bifid.

Description

Similar to A. wirthi in all aspects, except as follows.

Male. Measurements (in mm). Body length, 1.74; wing length, 1.20; wing width, 0.50. Color. Dark brown specimens, mouthparts ochre­yellowish, antennae ochre. Thoracic sclerites ochre, scutum slightly darker; legs brownish ochre, except light ochre tarsi. Wings translucent, except brownish veins, posterior ones lighter. Tergites brown, sternites light brown. Terminalia brown. Thorax ( Fig. 12 ). Antepronotal setae, 26–30; proepisternals, 6; proepimerals, 6; spiracular sclerite setae, 8; anepisternals, 14/8; katepisternals, 16; mesepimerals, 5–7/5–7; merals, 0; subspiraculars, 5; supra­alars, 4; pedicelars, absent; a number of longer scutellar setae not in regular row. Wing ( Fig. 13 ). Abdomen ( Figs. 14–15 ). Terminalia ( Fig. 16): seminal vesica very large, aedeagus ending on short apical tube; parameres clearly present, bare, well sclerotized, distally bifid; gonostyles deeply bifid, both extensions digitiform and setose; very modified gonocoxites as pair of projections mesal to gonostyles, each with 3 setae; T8+9 well developed, with pair of spiracles; S10 as pair of distal, finger­like projections completely separated from each other. Lobes of sternite 7 apparently absent.

Female. As for male, except as follows. Terminalia ( Figs. 17–19 ) with pair of gonapophyses VIII. Pair of translucent lobes internally on terminalia arising anteriorly from sternite 9. Tergite 10 rather well sclerotized. T8+9 with pair of spiracles clearly produced, vaginal furca laterally compressed.

Etymology. The name of this species derives from the word Maya, a reference to the ancient populations living in the Yucatán peninsula and some other southern Central American areas from about 1,500 B.C. to about 1,500 A.D.

Comments. The male terminalia of A. mayana are exceptionally simple, compared with other species of the genus, a condition acquired by some degree of simplification of the generic groundplan pattern. The shape of the gonostyles, parameres, and the S10 sclerites allows its immediate differentiation from A. wirthi .

Figures

FIGURE 12. Anapausis mayana. Thorax, lateral view.

FIGURE 13. Anapausis mayana. Wing.

FIGURES 14, 15. Anapausis mayana. Abdominal sclerites. 14. Tergite 2. 15. Sternite 4.

FIGURES 17 – 19. Anapausis mayana. Female terminalia. 17. Ventral view. 18. Dorsal view. 19. Lateral view.