Xantholeon xadnus New 1985
Creators: name: Miller, Robert B.
name: Stange, Lionel A.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Neuroptera
Myrmeleontidae
Xantholeon
Xantholeon xadnus

description: <i>Xantholeon xadnus</i> New (Figure 63, 64, 65) <i>Xantholeon xadnus</i> New 1985c: 11, figure 1107-1112. <b>Holotype male</b>, 21 km. northeast Kalbarri, 12.xii.1971, McFarland (ANIC). <b>Description. Adult:</b> length of body 23 mm, forewing 25 mm, hindwing 24 mm. <b>Coloration</b>: pale yellowish brown; labrum and clypeus pale; frons with broad dark brown to black band; vertex reddish in midline, red marks flanking two partial brown bands across central region; antennal flagellomeres pale, club with about 10 segments black; pronotum with much of central third suffused with longitudinal brown streaks, posterior border partially blackened, mostly dark brown laterally; mesopleuron about same color as metapleuron, with little dark brown anteriorly; abdomen predominantly pale brown, anterior of tergite II dark brown and irregular but uniform dark brown mark towards anterior of other tergites; wing with pale brown longitudinal veins except at intersections with crossveins which are black except near wing apices; forewing with dark mark at fusion of CuA2 and CuP + lA which extends along 3 or more cross veins; forewing without extended cubital mark; legs pale except darkened apices of all segments. <b>Chaetotaxy</b>: labrum and clypeus with pale brown hairs; midfemur with long dark sense hair other femoral hairs pale; tibia with sparse outstanding black bristles; male ectoproct with fringe of long black hairs. <b>Structure</b>: slender; antenna slender with flagellar segments longer than wide, club well defined; pronotum slightly longer than broad, incipient transverse furrow; legs slender, foretibia longer than forefemur, other tibia about equal to femoral length; tarsus shorter than tibia; distal tarsomere longer than basitarsus and tarsomeres II-IV; spurs slender, incurved apically, extending to apex of tarsomere III; pretarsal claws simple, slender, about equal to basitarsus; male sternite IX bluntly rounded; genitalia with gonarcus deeply hooded, tapered posteriorly; parameres widely spaced anteriorly, with strongly developed dorsal flange. <b>New records</b>. AUSTRALIA. <b>Western Australia</b>: 37 km. east Pt. Hedland, S20 o 23' 34.6", E118 o 54' 27.5", 1.III.1994, Miller &amp; Stange (2m, 3f, FSCA); 70 km. north Mullewa, Tallering Peak, S 28 o, 05', 36.8", E 115 o, 38', 37.0", 23.III.1994, Miller &amp; Stange (1m, 1f, FSCA). <b>Discussion</b>. New regarded <i>X. xadnus</i> as very similar to <i>X. montanus</i> differing mainly on color patterns. However, he only saw one male of <i>X. xadnus</i> and one female of <i>X. montanus</i> whereas we have seen 7 specimens of <i>X. xadnus</i> and 12 specimens of <i>X. montanus</i> of both sexes. The forewing with dark mark at fusion of CuA2 and CuP + lA extending along 3 or more cross veins (Figure 52) differs from <i>X. lineatus</i> and <i>X. cavernicolus</i>.
description: Published as part of <i>Miller, Robert B. &amp; Stange, Lionel A., 2012, The cave mouth antlions of Australia (Neuroptera: Myrmeleontidae), pp. 1-65 in Insecta Mundi 2012 (250)</i> on page 35, DOI: 10.5281/zenodo.5174820
description: {"references": ["New, T. 1985 c. A revision of the Australian Myrmeleontidae (Insecta: Neuroptera). III. Distoleontini and Acanthaclisini. Australian Journal of Zoology Suplementary Series 106: 1 - 159."]}