Systenus beatae Naglis, 2000

Ramos-Pastrana, Yardany, Merchan-Vargas, Geraldine Lucia & Soares, Matheus M. M., 2024, First record of the genus Systenus Loew (Diptera: Dolichopodidae) from Colombia, with description of four new species, Zootaxa 5514 (3), pp. 257-272 : 267

Systenus beatae Naglis

( Figs 5A, B , 7 )

Systenus beatae Naglis, 2000: 7 , figs 5a–b. Type locality: Brazil, Amazonas , Manaus, Reserva Florestal Adolpho Ducke.

Material examined. COLOMBIA, Caquetá, Belén de los Andaquíes, Vda. [Vereda] Aletones , Fca. [Finca] La Cabaña , 01º29’31’’N / 75º52’20’’W, 369 m, 18.I–01.II.2017 / Trampa Malaise en Bosque (Dosel), Y. Ramos-Pastrana leg. (1 ♂, LEUA) (photographed specimen) .

Distribution. Brazil (state of Amazonas) and Colombia (Caquetá, Belén de los Andaquíes) ( Fig. 7 ).

Remarks. The male terminalia of the examined specimen differs from the holotype illustration present in Naglis (2000, fig. 5b) by the presence of an apical ribbon-like seta on the surstylus ( Fig. 5B ). However, examination of the male holotype of S. beatae housed at Instituto Nacional de Pesquisas da Amazônia showed that this seta is broken off, and both terminalia are virtually identical. Systenus beatae can be easily recognized by the long, wide surstylus, longer than cercus and epandrial capsule combined and only slightly narrowed at apex.

Figures

FIGURE 5. A–B. Systenus baetae Naglis, 2000, identified male. A. Habitus, lateral view, arrow indicating metepimeron; B. Hypopygium, left lateral view. C–D. Systenus flaviatus Naglis, 2000, identified Male. C. Habitus, lateral view; D. Hypopygium, left lateral view. Systenus maculipennis Bickel, 2015, identified male. E. Habitus, lateral view, arrow indicating the tarsus white; F. Hypopygium, left lateral view.

FIGURE 7. Geographical records of Systenus Loew in Colombia. S. beatae Naglis, 2000; S. bickeli sp. nov.; S. colombiensis sp. nov.; S. flaviatus Naglis, 2000; S. fuscus sp. nov.; S. grossus sp. nov.; S. maculipennis Bickel, 2015; S. naranjensis Bickel, 2015 and S. parkeri Bickel, 2015.