Dendrepidosis Mamaev, 1990

Jaschhof, Mathias & Jaschhof, Catrin, 2020, The Porricondylini (Diptera: Cecidomyiidae: Porricondylinae) of Sweden revisited: descriptions of nineteen new species of ten genera, including a new genus, Zootaxa 4728 (2), pp. 151-182 : 157

Dendrepidosis Mamaev, 1990

This exclusively Palearctic genus contained previously three species, of which only D. longipennis (Spungis) is known to occupy a larger geographical area, extending from Sweden in the west to the European part of Russia in the east ( Gagné & Jaschhof 2017). The other two Dendrepidosis were found only once in the respective type localities, which lie in the European part of Russia ( D. bifidula Mamaev & Zaitzev ) and the Russian Far East ( D. obstipa Fedotova & Sidorenko ). Dendrepidosis obstipa is a somewhat enigmatic, poorly documented species whose affinity with Dendrepidosis is questionable ( Jaschhof & Jaschhof 2013: 171). Two new Dendrepidosis are described here from Sweden: D. lapponica , of which we have only a single specimen available, and D. upplandica , represented in our material by several specimens collected in one and the same province.

Within Porricondylini , Dendrepidosis belongs to generic group Aa, characterized by the presence of 14 male flagellomeres and absence of basitarsal spines. Male genitalic characters to define the genus are as follows: the large, convex gonostylus is strongly tapered towards the apex, which is equipped with a small tooth; gonocoxal processes are inconspicuous or absent; the parameral apices are bent dorsad and have, at least in one of the included species, a two-pointed appendage; the parameral apodemes are simple rather than branched; and the ninth tergite is larger than in most other Porricondylini (see Jaschhof & Jaschhof 2013: 171).