Dicerura peterssoni, Jaschhof, Mathias & Jaschhof, Catrin, 2015

Jaschhof, Mathias & Jaschhof, Catrin, 2015, New species and new distribution records of Lestremiinae, Micromyinae and Porricondylinae (Diptera: Cecidomyiidae) in Sweden, Zootaxa 3973 (1), pp. 159-174: 166-167

publication ID

http://dx.doi.org/10.11646/zootaxa.3973.1.6

publication LSID

lsid:zoobank.org:pub:6A9BC878-BFEF-440A-A533-389654DE5AB4

persistent identifier

http://treatment.plazi.org/id/9660FC12-FFCA-2D7A-FF4F-DBB727700A13

treatment provided by

Plazi

scientific name

Dicerura peterssoni
status

sp. n.

Dicerura peterssoni  sp. n.

( Fig. 5View FIGURE 5 A –D)

Diagnosis. Dicerura peterssoni  , a typical representative of the genus Dicerura  , is most similar to Dicerura fungicola Mamaev  ( Jaschhof & Jaschhof 2013: fig. 53) and distinguished from the latter as follows. The ventral surface of the gonocoxae is densely setose, but especially laterally not as densely as in D. fungicola  (Fig. B); gonocoxal processes are slightly larger (Fig. B, ↓); the mediobasal lobe of gonostylus is longer (Fig. A, ↓); tegmen and ejaculatory apodeme are merged apically (Fig. D, ↓) (separate in D. fungicola  ); the furca of ejaculatory apodeme is thicker and covered with tiny teeth (Fig. D, ↓) (without teeth in D. fungicola  ); and the ninth tergite has the posterior margin slightly incised medially (Fig. C, ↓) (convex in D. fungicola  ).

Other male characters. Body size 3.0– 3.1 mm. Head. Eye bridge 5–6 ommatidia long dorsally. Scape and pedicel lighter than flagellum. Neck of fourth flagellomere 1.7 times longer than node; circumfilum without posterior extensions. Palpus slightly longer than head height. Thorax. Both antepronotum and anepisternum setose. Wing. 3.1 times longer than wide. Vestige of M present at wing margin. Legs. Tarsi white-tipped. Terminalia ( Fig. 5View FIGURE 5 A –D). Ninth tergite: microtrichia on apical portion thick, but not coniform (Fig. C). Gonocoxae with wide asetose portion ventrobasally; ventral emargination subrectangular; 1 pair of processes (Fig. B, ↓). Gonostylus somewhat shorter than gonocoxa; apical portion bent ventrally, very densely setose, 1–2 short bristles dorsosubapically; mediobasal lobe densely pubescent apically (Fig. A –B). Membrane between gonostylus base and gonocoxa densely microtrichose. Tegmen almost parallel-sided, on apical half portion with many small barbs laterally (Fig. D). Base of ejaculatory apodeme obscure, apparently poorly sclerotized.

Etymology. This species is named after Nino Petersson, Kalmar, Småland.

Types. Holotype. Male (CEC 71), Sweden, Dalarna, Rättvik, Gåsberget Nature Reserve 10 km N Dalfors, swamp forest, 19–20 Aug. 2005, sweepnet, M. Jaschhof (in NHRS). Paratype. Male (CEC 72), Uppland, Östhammar, Andersby Nature Reserve SW Österbybruk, mixed deciduous / coniferous forest, 10 Sep. 2005, sweepnet & aspirator, M. Jaschhof.

NHRS

Swedish Museum of Natural History, Entomology Collections

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Cecidomyiidae

Genus

Dicerura