Dichrostigma Navas , 1909

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

Dichrostigma Navas, 1909

Dichrostigma Navás, 1909 (described as a section of Raphidia L.) [type species by subsequent designation: Raphidia flavipes Stein, 1863]: H. Aspöck et al. 1989 (biogeogr, distr; ill: distrmap); H. Aspöck et al. 1991 (mon); Oswald and Penny 1991 (cat, nom); H. Aspöck et al. 2001 (anncat); H. Aspöck 2002 (biol, paras); Haring et al. 2011 (phyl); U. Aspöck et al. 2012 (fig: phyltree); H. Aspöck and U. Aspöck 2013 (cat, etymol, phyl), 2014 (cat).

Lesna Navás, 1915b (odescr) [type species by original designation: Raphidia adanana Albarda, 1891]: H. Aspöck et al. 2001 (anncat).

Taxonomy and systematics.

H. Aspöck et al. (1991). Dichrostigma is a markedly differentiated genus. In a molecular phylogeny analysis ( Haring et al. 2011) it has emerged as the sister group of Tjederiraphidia and both are the sister of Raphidia . Dichrostigma comprises four species, which can easily be differentiated also by eidonomic characters.

Biology and ecology.

Larvae soil-dwelling. Development two years. Last hibernating stage: full-grown larva. Adults: IV-VII. Euryoecious. In light pine forests as well as in habitats with deciduous trees or bushes only, in altitudes from sea level to 1800 m.

Distribution.

Central-, E-, SE-Europe, Anatolia, Near East. One species occurs on Mediterranean islands.