Xanthostigma aloysiana (Costa, 1855)

Aspoeck, Horst & Aspoeck, Ulrike, 2023, The snakeflies of the Mediterranean islands: review and biogeographical analysis (Neuropterida, Raphidioptera), Deutsche Entomologische Zeitschrift 70 (1), pp. 175-218 : 175

Xanthostigma aloysiana (Costa, 1855)

Raphidia aloysiana Costa, 1855 (odescr): H. Aspöck et al. 1991 (mon).

Raphidilla puella Navás, 1915c (odescr): H. Aspöck et al. 1991 (mon); H. Aspöck and U. Aspöck 2014 (cat).

Raphidilla soror Navás, 1915c (odescr): H. Aspöck et al. 1991 (mon); H. Aspöck and U. Aspöck 2014 (cat).

Xanthostigma aloysiana (Costa): H. Aspöck et al. 1991 (mon); H. Aspöck and Hölzel 1996 (distr); Letardi and Pantaleoni 1996 (rec); Monserrat 1996 (distr); H. Aspöck et al. 2001 (anncat); U. Aspöck and H. Aspöck 2005b (biogeogr); Pantaleoni 2005 (rec); H. Aspöck and U. Aspöck 2007 (biogeogr, distr); Badano 2008 (distr, rec); Badano and Letardi 2010 (rec); Monserrat and Papenberg 2010 (chorol); Haring et al. 2011 (phyl, phyltree); H. Aspöck and U. Aspöck 2013 (cat, etymol), 2014 (cat).

Xanthostigma aloysianum (Costa): Letardi and Maltzeff 2008; Letardi 2015 (rec); Monserrat and Papenberg 2015 (mon, rec, synlist); Thierry et al. 2021 (rec, distr).

Taxonomy.

H. Aspöck et al. 1991 (mon). X. aloysiana resembles superficially X. corsica , but can easily be differentiated by eidonomic characters (e.g. only two cells between R and Rs in the forewing).

Biology and ecology.

Poorly known. Larvae probably terricolous. Adults in light pine forests or light mixed forests with rich bush vegetation and in macchias of different structure in altitudes of 600 to 1200 m, usually found in single specimens only. Adults: V-VII.

Records on Mediterranean islands

(Fig. 8a ). So far only in Central Sardinia (Gennargentu). These findings, so far not properly published, are from altitudes slightly below 1000 m. Syntopic Raphidioptera in Sardinia: Xanthostigma corsica , Fibla maclachlani .

Continental distribution.

Records in all major parts of the Apennine Peninsula, in the south of Switzerland, southern France, and in the northeast of Spain in altitudes between 600 and 1200 m.

Biogeography.

Monocentric Adriatomediterranean faunal element with moderate expansivity.

Figures

Figure 8. a. Records of species of the genus Xanthostigma, X. corsica and X. aloysiana, on Mediterranean islands; b. Records of Ornatoraphidia flavilabris, Phaeostigma (Magnoraphidia) wewalkai, and of Dichrostigma flavipes, on Mediterranean islands.