Xanthostigma xanthostigma xanthostigma (Schummel 1832
Creators: name: Wu, Zhigang
name: Liu, Xingyue
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Raphidioptera
Raphidiidae
Xanthostigma
Xanthostigma xanthostigma

description: Xanthostigma xanthostigma (Schummel, 1832) New record from China (Figs 2, 9–11)   
 Raphidia xanthostigma Schummel, 1832: 12. Type locality: Poland (Wroclaw: Breslau).   
 Raphidia londinensis Curtis, [1824] 1824 -1839: pl.37. Type locality: United Kingdom (England: London).   
 Rhaphidia chalybocephala Ratzeburg, 1844: 254. Type locality: unknown.   
 Raphidia schummeli Girard, 1864: 673. Type locality: France (Maisons-Laffitte).   
 Rhaphidilla germanica Steinmann, 1964: 222. Type locality: unknown.   
 Rhaphidilla rapax Steinmann, 1964: 218. Type locality: unknown.   
 Agulla trilobata Bartoš, 1965a: 87. Type locality: Czech Republic (Jihomoravský: steppe near Pouzdřany).   
 Agulla rostrata Bartoš, 1965b: 458. Type locality: Moldova.   
Male. Body length 9.6 mm; forewing length 8.0 mm, hindwing length 7.4 mm.  
Head (Fig. 2) ovoid, posteriorly tapering, black, slightly shiny blonde green; vertex medially with an indistinct reddish brown longitudinal stripe; clypeus yellow. Compound eyes grayish brown. Antennal sclerite yellow; antennae yellow, but flagellum with distal half pale brown. Mouthparts yellow; mandibles with distal half reddish brown.  
Pronotum (Fig. 2) long, slender, yellow, laterally with a pair of brownish longitudinal stripes; meso- and metathorax blackish brown, mesonotum medially yellow, metanotum with posterior margin of scutellum yellow. Legs yellow with yellowish long setae and brownish short setae. Wings hyaline; pterostigma pale yellow, medially crossed by a short oblique veinlet; veins brown, but longitudinal veins with proximal half yellow. Rs trifurcated distad.  
Abdomen (Fig. 2) blackish brown; all pregenital segments dorsally with a pair of yellowish vittae laterally and with a yellowish vitta centrally, yellow markings on terga 4–6 much larger; each sternum with posterior margin slightly yellow, and sterna 6-8 almost entirely yellow. Genital segments blackish brown, tergite 9 and ectoproct laterally with yellow markings. Tergite 9 (Fig. 9) in lateral view nearly subtrapezoidal, in dorsal view with arcuately convex lateral margins and arcuately concaved posterior margin. Sternite 9 (Fig. 10) present as a pair of tiny, slender sclerites. Gonocoxite 9 (Fig. 11) longitudinally directed, nearly as long as tergite 9, about 2.5 times as long as wide, ventral margin with rows of dentation and medially with a laterally curved claw-like projection; gonostylus 9 elongate, slightly and arcuately incurved, terminally bearing a long spinous process and a short dentate process. Hypovalva (Fig. 10) about 2/3 length of tergite 9, anterior portion deeply V-shaped, laterally with a pair of short subtriangular projections, remaining part slightly broaden posteriad, with rounded tip. Paramere (Fig. 9) short and broad, located at dorsal portion of base of endophallus, in lateral view comma-shaped, in dorsal view with arcuate posterior incision. Gonarcus (Fig. 11) paired, slender, laterally curved. Endophallus (Fig. 11) slightly longer than tergite 9, bilobed distad, proximally with a pair of foliate sclerites, which bear rows of dentation. Ectoproct (Figs 9–10) broad, anteriorly with an arcuate transverse suture, and strongly expanded ventrad, forming arcuate posterior incision in dorsal view.  
Material examined. 1♂, China, Xinjiang, Beitun, 6 May 1963 (ZJU).  
Distribution. China (Xinjiang); Iran, Mongolia; Austria, Bulgaria, Croatia, Czech, Denmark, Finland, Germany, Hungary, Liechtenstein, Moldova, Netherlands, Norway, Poland, United Kingdom, Slovakia, Slovenia, Romania, Russia, Switzerland.
description: Published as part of Wu, Zhigang & Liu, Xingyue, 2016, The species of the snakefly genus Xanthostigma (Raphidioptera: Raphidiidae) from China, pp. 109-116 in Zoological Systematics 41 (1) on pages 113-115, DOI: 10.11865/zs.201608, http://zenodo.org/record/5366872