Xenogonilla (Trechicus), LeConte, 1853

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722: 781

publication ID

http://dx.doi.org/10.3897/zookeys.245.3416

publication LSID

lsid:zoobank.org:pub:68FE3835-2401-43A7-96E2-CF26532F7A60

persistent identifier

http://treatment.plazi.org/id/D5411901-06C4-53DE-B981-4F63FFA9A390

treatment provided by

ZooKeys by Pensoft

scientific name

Xenogonilla (Trechicus)
status

 

Subgenus Trechicus LeConte, 1853  

Trechicus   LeConte, 1853c: 386. Type species: Trechicus umbripennis   LeConte, 1853 (= Bembidium nigriceps   Dejean, 1831) designated by Jeannel (1926: 247). Etymology. From the generic name Trechus   [q.v.] and the Greek eicon (image, figure), probably alluding to the resemblance of the adults to those of Trechus   ("have very much the appearance of minute Trechus") [masculine].

Extromus   Péringuey, 1896: 584, 586. Type species: Extromus pusillus   Péringuey, 1896 (= Bembidium nigriceps   Dejean, 1831) by monotypy.

Diversity.

Eighteen species in the Nearctic (one endemic species), Australian (seven endemic species), and Afrotropical (ten endemic species) Regions and one ( Perigona nigriceps   ) subcosmopolitan species.

Identification.

Bousquet (1987a: 128) commented on the structural differences between the two species found in North America.

Taxonomic Note.

Hirtoperigona   Perrault is placed in synonymy with Trechicus   in Lorenz (2005: 438). However, the position of the median group of setae of the umbilical series in the type species ( Perigona tronqueti   Perrault from Sri Lanka) and in Perigona pubescens   Jeannel (from Vietnam) suggests that members of Hirtoperigona   are more closely related to Perigona   s.str. than to Trechicus   . Perrault (1988) placed a third species ( Perigona hirtella   Basilewsky from Africa) in Hirtoperigona   on the basis of the original description alone; according to Basilewsky (1989: 447), the species belongs to Trechicus   .

The relationship of the endemic North American species ( Perigona pallipennis   LeConte) has not been studied and, in my opinion, it may be more closely related to members of Cryptoperigona   than to those of Trechicus   .

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Carabidae

Genus

Xenogonilla

Loc

Xenogonilla (Trechicus)

Bousquet, Yves 2012
2012
Loc

Extromus

Peringuey 1896
1896
Loc

Trechicus

LeConte 1853
1853
Loc

Trechicus umbripennis

LeConte 1853
1853
Loc

Bembidium nigriceps

Dejean 1831
1831
Loc

Bembidium nigriceps

Dejean 1831
1831
Loc

Trechus

Clairville 1806
1806
Loc

Trechus

Clairville 1806
1806