Aprionus tyri,

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: 28-29

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Aprionus tyri

sp. nov.

Aprionus tyri  sp. nov.


Fig. 16View Fig


Aprionus tyri  sp. nov. is extremely similar to A. magnussoni Jaschhof & Jaschhof, 2015  .The most obvious distinction is the shape of the gonostylus, which in A. tyri  sp. nov. is essentially elongate, i.e., three times as long as wide, with the posterior margin slightly convex (↓, Fig. 16AView Fig) and in A. magnussoni  is compact, i.e., two times as long as wide, with the posterior margin strongly convex ( Jaschhof & Jaschhof 2015: fig. 3A). Another distinction, but one that is hard to depict because the relevant structures are tiny, is the gonostylar tooth, which is rather straight and with the base broadly adpressed to the gonostylar body in A. tyri  sp. nov., while beak-shaped and protruding from the gonostylar body in A. magnussoni  . The tegmen of A. tyri  sp. nov. is slightly bulkier and has a pair of dark (refractive) margins ventrally (↓, Fig. 16AView Fig); these are absent in A. magnussoni  ( Jaschhof & Jaschhof 2015: fig. 3A). The subanal plate of A. tyri  sp. nov. is broader and has a narrow, V-shaped sclerotization on the posterior margin (↓, Fig. 16AView Fig); in A. magnussoni  this margin is broadly U-shaped ( Jaschhof & Jaschhof 2015: fig. 3A). Nongenitalic morphology (see Jaschhof & Jaschhof 2015: 164) is identical in both species.


Tyr, whose one-handedness is an important defining attribute, is regarded as one of the principal war gods.

Material examined


SWEDEN: ♂, Halland, Laholm, Mästocka heathland, 56.36° N, 13.14° E, heath near grove, Malaise trap, Swedish Malaise Trap Project (trap 34, collecting event 1091), 4–15 Jun. 2004 ( NHRS, no. CEC180).



SWEDEN: 2 ♂♂, same data as for the holotype ( NHRS, nos CEC 181, CEC 190).

Other material studied

SWEDEN: 1 ♂, Öland, Mörbylånga, Ottenby, Södra lunden, 56.13° N, 16.25 °E, nemoral grove, MT, SMTP (trap 21, collecting event 991), 27 May–7 Jun. 2004 ( NHRS, no. CEC 189); 2 ♂♂, Östergötland, Ödeshög, Omberg, Stocklycke meadow, 58.18° N, 14.37° E, calcareous meadow, MT, SMTP (trap 13, collecting event 909), 25 May–8 Jun. 2003 ( NHRS, nos CEC 187–188); 5 ♂♂, Lule Lappmark, Jokkmokk, Norden, Sikan river, swampy birch forest, MT, MCJ leg., 12 Jul.–9 Aug. 2005 ( DEI, nos CEC 182–186).


Specimens described here as A. tyri  sp. nov. were first thought to be atypical A. magnussoni  , until we discovered that both morphotypes occur sympatrically (even in one and the same Malaise sample) without showing intermediate characters. Our decision to consider these two morphotypes to be distinct species is based on the study of 11 males of A. tyri  sp. nov. from four different localities, and 10 males of A. magnussoni  from two different localities. Sympatric occurrence was observed at the type-locality.

Specimens of Aprionus magnussoni  studied

SWEDEN: all types (see Jaschhof & Jaschhof 2015); 2 ♂♂, same data as for the types, but 4–15 Jun. 2004 (DEI, nos CEC125–126); 1 ♂, Öland, Mörbylånga, Frösslunda alvar, 56.32° N, 16.34° E, alvar pasture, MT, SMTP (trap 20, collecting event 1495), 9 May–3 Jun. 2005 (NHRS, no. CEC124).

Distribution and phenology

Sweden (Halland, Öland, Östergötland, Lule Lappmark). This species was found to occur in various types of open woodland and scrubby grassland from the nemoral to the boreal zones, with adults collected in late spring (in the south) and summer (in the north).


Swedish Museum of Natural History, Entomology Collections


Mus. Tinro, Vladyvostok


Missouri Southern State College


Senckenberg Deutsches Entomologisches Institut