Matileola similis (after Papp, 2005)
Matileola similis is a close relative of M. yangi L. PAPP. However, it is easily distinguishable from the latter species by its dark halter (that is yellow in M. yangi). The differentiating features the in male genitalia are small but definite. Microtrichia on abdominal tergite 8 are sparse, and even the shape of T8 is slightly different. The shape of gonostylus is different: the gonostylus of M. similis is longer than that of M. yangi
Male. All body, including abdominal tergites dark, blackish brown.
Head.Male frons linear, facettes comparatively large, round, microtrichja between minute but distinct. Two large lateral ocelli. Dorsal eye facettes not much bigger than ventral eye facettes. Intraocellar cilia comparatively long, 0;02 mm. Antenna all dark, ca. 0.55 mm long.
Thorax. Mesonotal microtrichia short, a sagittal acrostichal and 2 dorsocentral rows seem to be distinct. Supra-alar and postalar setae of thorax are stronger. Scutellum short (ca. 0.08 mm long) with minute pale hairs.
Legs. Fore coxa dirty yellow, mid and hind coxae blackish. Fore and mid legs dirty yellow, tarsi darker (brown). All hind leg dark blackish brown, only base of hind femur indistinctly lighter. No stronger setae on legs, femoral and tibial microtrichia comparatively long and less numerous (e.g., both fore and mid tibiae with 8 rows only). Microtrichia are ordered in rows. Fore tibia 0.59 mm long, fore metatarsus 0.54 mm. Fore and mid tarsi are thin. No tibial spur on fore tibia, mid tibia with only 1 thin spur, which is only 0.065 mm long. Hind tibia baseball-bat shaped, length 1.34 mm, hind metatarsus 0.77 mm long, breadth 0.15 mm. Hind tibia with a 0.23 mm long medial and a 0.13 mm long lateral spur.
Wing greyish brown, not spotted, though radial region and narrow stripes along the other vein darker brown, the lighter band along M, broader and more contrasting to other darker parts of wing membrane, than in M. yangi. Costal and radial veins light brown, other veins ochre. Vein R, reaches 1.44 mm from wing base, i.e. 0.60 of wing length. Costal vein is rather thick from its conjointment with R, to its apex. Costa ends at 2/3 of distance of R5 and M1. Cu, curved arched; Cu2 straight, parallel to Cu, , and continued to the curve in Cu r A, close to and nearly parallel with hind wing margin. Halter dark (except for stalk basally), dark grey (blackish), length 0.56 mm (holotype).
Abdomen very thin and much longer than wing, tergites all dark. Tergite 8 somewhat shorter than that of M. yangi, with a large medio-caudal process. This process is more rounded and thicker than in M. yangi (its shape may be slightly different from that one on our figure, the process being half a cone. i.e. may be depressed at a different extent), but microtrichia are more sparse, particularly so on apex. Sternite 8 similar to that of M. yangi. Tergite 9 similar to that of M. yangi but its macrosetae seem slightly shorter. The most anterior ring and its stalk are normally inside the T8+S8 space. Both cerci+proctiger and inner genitalia are hidden deep (rather anteriorly) under T9. Gonocoxites fused on a short section ventrobasally ; gonocoxites without any conspicuous armature, but with a narrow, twice angularly bent medial process. Gonostylus not shorter than medial edge of gonocoxite, at its apical third ca. 1.5 times broader than basally. with widely rounded apex and with an apico-medial tooth as in M. yangi. Inner genitalia structurally similar to those of M. yangi, possibly lateral sclerites of aedeagus somewhat stronger.
Female unknown.
Measurements in mm: length of head 0.265, length of thorax 0.65, length of head and thorax together 0.85, length of abdomen 3.025, total body length ca. 3.80 (holotype), body length of paratypes 2.72-3.72, wing length 2.42, 2.00-2.52 (paratypes), wing breadth 0.835, 0.635-0.85 (paratypes), length of proboscis 1.02, 0.825 -1.04 (paratypes).
