Aprionus balduri,

Jaschhof, Mathias & Jaschhof, Catrin, 2017, New species of Aprionus (Diptera, Cecidomyiidae, Micromyinae) from Sweden and other parts of the Palearctic region, European Journal of Taxonomy 378, pp. 1-38: 3-5

publication ID

https://doi.org/10.5852/ejt.2017.378

publication LSID

lsid:zoobank.org:pub:81628632-5B35-49E5-AB7A-B8B50B2FB06B

persistent identifier

http://treatment.plazi.org/id/03CF87D4-096C-0450-FD11-7E86FB89FCA0

treatment provided by

Plazi

scientific name

Aprionus balduri
status

sp. nov.

Aprionus balduri  sp. nov.

urn:lsid:zoobank.org:act:500C3CCF-E0E3-4201-98AB-605DE509F543

Fig. 1View Fig

Diagnosis

A typical representative of the angulatus  group ( Jaschhof & Jaschhof 2009: 223), distinguished by the following male genitalic characters in combination. The ninth tergite ( Fig. 1CView Fig) is lobed posterolaterally (↓), with a membranous area between the lobes. The ventroposterior gonocoxal lobes are very large (↓, Fig. 1AView Fig); the ventrobasal apodeme is strongly sclerotized (↓, Fig. 1AView Fig). The ventrobasal and dorsoapical portions of the gonostylus are the same size; the gonostylar apex is narrow (↓, Fig. 1BView Fig). The elongate tegmen has a large, rhombic central opening that lacks spinulae (↓, Fig. 1AView Fig).

Etymology

Baldur, a friendly god, is a son of Odin and his wife, Frigg.

Material examined

Holotype

SWEDEN: ♂, Småland , Högsby , Hornsö kronopark, 57.02° N, 16.63° E, birch swamp, Malaise trap, Swedish Malaise Trap Project (trap 18, collecting event 343), 20–30 Jul. 2004 ( NHRS, no.CEC164).

GoogleMaps 

Paratype

NORWAY: 1 ♂, Vestfold, Horten, Adalstjernet SE, MT, E. Rindal leg., 8 Jul. – 12 Aug. 2003 ( DEI, no. CEC 165).

Differential diagnosis

Male genitalic structures of Aprionus balduri  sp. nov. and A. angulatus  (see Jaschhof & Jaschhof 2009: figs 72A, 75A, 76A) are similar, but in the latter species the gonocoxal lobes are considerably smaller, the ninth tergite lacks a membranous area posteromedially, and the central tegminal opening is smaller and equipped with spinulae.

Other characters

Body size 1.1 mm.

HEAD. Eye bridge 2–3 ommatidia long dorsally. A dense row of 10 postocular bristles. Neck of fourth flagellomere slightly shorter than node; translucent sensilla thick, simply hair-shaped. Palpus with 3 or 4 segments, even in one and the same specimen.

WING. ApicR 1 3 times as long as Rs. CuA straight, ends halfway to wing margin.

LEGS. Claws sickle-shaped, 0–1 fine teeth. Empodia narrow, almost as long as claws.

TERMINALIA. Ninth tergite short, anterior margin fully sclerotized ( Fig. 1CView Fig). Medial extensions of gonocoxal apodemes sclerotized, interconnected medially. Gonostylus blunt-ended, 2+1 short bristles among dense setulae and microtrichia apically ( Fig. 1BView Fig). Lateral pillars of tegmen thin, in touch subapically, recurved apically ( Fig. 1AView Fig).

Remark on the description

The antennae of the holotype have retained only the first flagellomeres, in the paratype one flagellum is missing and the other is collapsed, which explains why the fourth flagellomere cannot be illustrated here (as is routinely done with Aprionus  ).

Distribution and phenology

Norway (Vestfold), Sweden (Småland). This species is known from only two specimens, despite many years of collecting Micromyinae  , including Aprionus  , throughout Fennoscandia.

MT

Mus. Tinro, Vladyvostok

DEI

Senckenberg Deutsches Entomologisches Institut

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Cecidomyiidae

Genus

Aprionus