. Fig. 10. Antenna of Rh. spinix>es. X 65. black, the two basal joints slightly greyish, with long, black hairs; the third joint considerably elongated, especially in its terminal part. Thorax dark grey, slightly shining, with three blackish or brownish black stripes, the median narrow, the lateral very broad, occupying the whole lateral space; all three stripes somewhat abbreviated both in front and behind. The acrostichal and dorsocentral bristles long, black; the former somewhat irregularly biserial, the latter long and strong behind and here about uniserial, but pluriserial further for-
. Fig. 10. Antenna of Rh. spinix>es. X 65. black, the two basal joints slightly greyish, with long, black hairs; the third joint considerably elongated, especially in its terminal part. Thorax dark grey, slightly shining, with three blackish or brownish black stripes, the median narrow, the lateral very broad, occupying the whole lateral space; all three stripes somewhat abbreviated both in front and behind. The acrostichal and dorsocentral bristles long, black; the former somewhat irregularly biserial, the latter long and strong behind and here about uniserial, but pluriserial further for- wards, and in the front part fusing with similar hairs clothing the disc at the sides behind and inwards to the humeri; there is no strong humeral bristle, but a posthumeral, generally four notoplural, some supraalar and a postalar bristle are discernible among the weaker hairs; they are all black. Scutellum grey with six to eight black marginal bristles. Pleura dark grey; metapleura with black or brownish black hairs. Abdomen blackish brown, very slightly shining; seen from in front it is more greyish, with a black, interrupted middle line; venter dark grey. Abdomen is clothed with long, erect, black hairs which are strongest at the hind margins of the segments and here fan-like spread; venter has long, black hairs. The exterior genitalia have the lower lateral lamellte blackish, the lower margin is straight, the upper oblique, the lamellae thus attenuating towards the apex and here curved towards each other; on the inside, near the apex there is a little tooth: the lamellae have long, black hairs
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Keywords: ., bookauthorlu, bookcentury1900, bookdecade1900, booksubjectdiptera
