Paraclius aberrans Robinson, 1964

Soares, Matheus M. M., Capellari, Renato S. & Ale-Rocha, Rosaly, 2023, New or little-known Neotropical Dolichopodidae (Diptera) (II): genus Hercostomus Loew excluded from the Neotropics, Zootaxa 5254 (2), pp. 181-208 : 191

publication ID 10.11646/zootaxa.5254.2.2

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Paraclius aberrans Robinson, 1964


Paraclius aberrans Robinson, 1964 View in CoL

( Figs 6 View FIGURE 6 , 16 View FIGURE 16 )

Paraclius aberrans Robinson, 1964: 180 View in CoL , fig. 112. Type locality: USA: Plano, Collin County, Texas, USA .

Diagnosis (male). Face narrow (as wide as ocellar tubercle at narrowest point) ( Fig. 6B View FIGURE 6 ); antenna yellow, with apical 2/3 of postpedicel brownish ( Figs 6A, B View FIGURE 6 ); postpedicel slightly longer than wide, rounded at apex. Legs: yellow, except lateral surface of coxa II and all tarsi from apex of basitarsus brownish ( Figs 6A, B View FIGURE 6 ). All tarsi unmodified. Wing hyaline, M 1 gradually angled towards R 4+5. Hypopygium as long as abdomen ( Fig. 6A View FIGURE 6 ); cercus brownish, branched, dorsal branch short, about 1/4 of length of ventral branch, ventral branch fusiform.

Examined type material. HOLOTYPE ♁ (based on photographs) ( Fig. 6 View FIGURE 6 ) labelled as: “ Plano , Texas [ca 33°02′27.4″N 96°44′33.5″W] | Sep, at night | E.S. Tucker ”; “Taken at | trap light” GoogleMaps ; Holotype ♁ | Paraclius | aberrans | H. Robinson ” [handwritten, green label] ( NMNH) .

Remarks. Robinson (1975) noted the similarity between Paraclius aberrans and P. latipes , and both seem to be closely related by sharing the robust and elongate hypopygium, as long as abdomen, and the fusiform ventral branch of the cercus ( Robinson 1964, fig. 112). Paraclius aberrans can be distinguished from P. latipes by the face being as wide as ocellar tubercle at middle ( Fig. 6B View FIGURE 6 ) (face narrower than ocellar tubercle in P. latipes ( Figs 7B View FIGURE 7 , 8C View FIGURE 8 )) and the cylindrical tarsus I (tarsus I dorsoventrally flattened in P. latipes ( Fig. 8E–G View FIGURE 8 )). Robinson (1964) indicated that species without the conspicuous anterior bend in wing vein M 1 had been described as Hercostomus . Nevertheless, he correctly placed this species in Paraclius by the presence of only five strong dorsocentral setae, two ventral setae on tibia II, and anteroventral preapical seta on femur III, a set of characters found in other species of Paraclius .

The holotype of this species was collected at a light trap, an unusual method for Paraclius species.

Distribution. USA (Texas), Mexico (San Luis Potosí) ( Fig. 16 View FIGURE 16 ).


Smithsonian Institution, National Museum of Natural History














Paraclius aberrans Robinson, 1964

Soares, Matheus M. M., Capellari, Renato S. & Ale-Rocha, Rosaly 2023

Paraclius aberrans

Robinson, H. 1964: 180
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