Litargus connexus (Geoffroy, 1785)

Pentinsaari, Mikko, Anderson, Robert, Borowiec, Lech, Bouchard, Patrice, Brunke, Adam, Douglas, Hume, Smith, Andrew B. T. & Hebert, Paul D. N., 2019, DNA barcodes reveal 63 overlooked species of Canadian beetles (Insecta, Coleoptera), ZooKeys 894, pp. 53-150 : 53

publication ID	https://dx.doi.org/10.3897/zookeys.894.37862
publication LSID	lsid:zoobank.org:pub:D11503CA-5A57-4067-8179-04E0C8C162C8
persistent identifier	https://treatment.plazi.org/id/66BCF5E3-CE40-52FA-862F-A90D4FCE3E9E
treatment provided by	ZooKeys by Pensoft (2019-12-05 16:57:16, last updated 2024-11-26 18:48:22)
scientific name	Litargus connexus (Geoffroy, 1785)
status

Treatment

Litargus connexus (Geoffroy, 1785) Figure 37 View Figures 36, 37

Distribution.

Native to the Palaearctic region. Widespread in Europe, also recorded from North Africa, and across the region to the Russian Far East and Japan ( Nikitsky 2008). Adventive in the Nearctic region (British Columbia, Canada).

Canadian records.

British Columbia: Burnaby, 20-Apr-2015 to 08-May-2015 (1 ex, CBG).

Diagnostic information

(based on Vogt 1967a). Body length 2.4-2.8 mm. Dorsal habitus elongate, sides of elytra almost parallel ( Fig. 37A View Figures 36, 37 ). Black, elytra with transverse, undulating yellow bands at the base and just beyond midlength, and a yellow sutural spot close to the elytral apex. Yellow markings variable, basal band frequently broken into separate spots. Antennomere 8 somewhat wider than long, terminal antennomere approximately as long as wide, structure of the antennal club as in Fig. 37B View Figures 36, 37 . Elytra with epipleura concave, descending towards the lateral edge.

Bionomic notes.

This species is found in deciduous and mixed forests in fungus-infested dead wood ( Koch 1989b). The Canadian specimen was collected with a Malaise trap in a suburban residential area.

Comments.

The combination of the elongate and nearly parallel-sided body, color pattern of the elytra and structure of the antennae will distinguish L. connexus from all other Litargus species known from Canada. Parsons (1975) provides diagnoses and illustrations of the native North American species.

References

Koch, K, 1989b. Die Kaefer Mitteleuropas, Oekologie (Vol. 2). Goecke & Evers Verlag, Krefeld

Nikitsky, NB, Loebl, I, Smetana, A, 2008. Mycetophagidae. In: LoeblISmetanaA (Eds) Catalogue of Palaearctic Coleoptera (Vol.5). Apollo Books, Stenstrup, 51-55.

Parsons, CT, 1975. Revision of Nearctic Mycetophagidae (Coleoptera). The Coleopterists Bulletin 29: 93 - 108

Vogt, H, Freude, H, Harde, KW, Lohse, GA, 1967a. Mycetophagidae. In: FreudeHHardeKWLohseGA (Eds) Die Kaefer Mitteleuropas, Band 7.Goecke & Evers, Krefeld, 191-196.

Figures

Figures 36, 37. 36 Orthoperus corticalis (Redtenbacher) 36 A habitus, L. Borowiec 36 B male metaventrite 36 C aedeagus, ventral view 36 D aedeagus, lateral view 37 Litargus connexus (Geoffroy) 37 A habitus, L. Borowiec 37 B antenna. Scale bars: 0.25 mm (36 A), 0.2 mm (36 B-D), 0.5 mm (37 A), 0.2 mm (37 B).