Himantigera, James in James & McFadden, 1982

Fachin, Diego Aguilar & Hauser, Martin, 2018, Taxonomic revision of the Neotropical genus Himantigera James, 1982 (Diptera: Stratiomyidae: Sarginae), including the description of two new species and a key to the known species, Zootaxa 4531 (4), pp. 451-498 : 480

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Himantigera sp. B

( Figs 12 View FIGURES 7–12 , 24 View FIGURES 13–24 , 55 View FIGURES 45–55 , 83–85 View FIGURES 83–85 , 100–101 View FIGURES 96–105 , 118–119 View FIGURES 118–119 )

Diagnosis (male). Highly similar to males of H. amauroptera , but slightly bigger and more shining green. Lateral area of upper frons half width of medial area ( Fig. 24 View FIGURES 13–24 ). Abdomen elongate with apex enlarged ( Fig. 55 View FIGURES 45–55 ), not as strongly parallel as seen in H. amauroptera ( Fig. 52 View FIGURES 45–55 ).

Material examined. ♂, BOLIVIA, Prov. [Province] La Paz, Cumbre Alto Beni, vicinity of Caranavi , 1685 m, 15°40’19”S 67°29’35”W, 07–15.iv.2004, Malaise traps, S.D. Gaimari & M. Hauser ( CSCA). Labeled as “Unnamed species B Fachin & Hauser 2018” GoogleMaps .

Description. Male. Length: body, 11.0; wing, 7.0. Head ( Fig. 24 View FIGURES 13–24 ). Vertex and upper frons pilosity mostly black. Upper frons narrower than widest margin of frontal callus. Frontal callus margin slightly divergent towards face. Thorax. Legs mostly yellow, mid coxa proximally and hind coxa, apical half of all femora dorsally and all tibiae antero-ventrally dark brown. Wing. R 2+3 originating well beyond r–m, at a distance two times greater than length of r–m. Proximal branch of M 1+2 shorter than distal branch of M 1+2. Alula with microtrichia only along anterior half. Abdomen ( Fig. 55 View FIGURES 45–55 ). Elongate, widest at fourth segment; entirely dark with tergites metallic dark green, shiny green mainly on tergites 1–3 laterally; sternites quite dark, not clearly metallic green; long golden pilosity laterally on tergites 1–2; shorter dark pilosity medially on tergites 1–3; shorter white pilosity on sternites 1– 3; shorter black pilosity on 4–5 segments. Terminalia ( Figs 83–85 View FIGURES 83–85 , 100–101 View FIGURES 96–105 ). Genital capsule wider than long, its posterior margin less developed, not exceeding its ventral margin; medial process of synsternite weakly developed. Gonostylus three times longer than wide. Epandrium slightly wider long ( Fig. 83 View FIGURES 83–85 ).

Female. Unknown.

Geographic distribution. Bolivia (La Paz) ( Fig. 130 View FIGURE 130 ).

Comments. This species resembles males of Himantigera amauroptera in having the legs colored the same (i.e., dark brown marks covering part of mid coxa, hind coxa, apical half of all femora dorsally, and all tibiae antero-ventrally dark brown) and in having R 2+3 arising at a distance two times greater than length of r–m. The only differences between the two would be the shape of the abdomen, which is slightly enlarged apically in H. sp. B, and parallel-sided in H. amauroptera , and the shape of the male genital capsule, which is wider in H. sp. B than it is in H. amauroptera . Because these differences may represent intra-specific variation, we will keep this specimen unnamed until more material is available for comparison.


California State Collection of Arthropods