Plagionotus arcuatus (Linnaeus, 1758)

Królik, Roman, Kruszelnicki, Lech, Lasoń, Andrzej & Walczak, Marcin, 2021, Notes on the subspecies of Plagionotus arcuatus (Linnaeus, 1758) with description of a new subspecies from Iran (Coleoptera: Cerambycidae), Zootaxa 4942 (4), pp. 558-568 : 566

publication ID

https://doi.org/ 10.11646/zootaxa.4942.4.4

publication LSID

lsid:zoobank.org:pub:43CED03D-394D-43B4-844B-F7F511513B8F

DOI

https://doi.org/10.5281/zenodo.4644726

persistent identifier

https://treatment.plazi.org/id/03DECA08-FFCD-0176-FF40-D48D2E9111E9

treatment provided by

Plazi

scientific name

Plagionotus arcuatus (Linnaeus, 1758)
status

 

Key to subspecies of Plagionotus arcuatus (Linnaeus, 1758) View in CoL

Because of the rather small number of voucher specimens available to us, we have constructed our key mainly based on the original descriptions, stating the dominant characters in each subspecies. There are specimens, however, which deviate in appearance from most members of their subspecies. For example: P. a. lugubris with red legs and antennae, and yellowish spots and stripes or else with uninterrupted elytral stripes; P. a. kirgizicus with exceptionally prominent median stripes on the pronotum and head (see Lazarev 2010); P. a. arcuatus with very dense pubescence on the sternites ( Figs. 1.A–B View FIGURE 1 ). In our opinion, such deviant specimens confirm the close relationship between the various subspecies, and their sporadic occurrence in no way undermine the validity of dividing P. arcuatus into subspecies. These comments should be borne in mind when using the key given below.

1. Pronotum with well developed pale stripes on the anterior margin and in its middle part, head with distinct stripe of yellow pubescence behind the eyes ( Fig. 3C View FIGURE 3 ).................................................................... 2.

- Pronotum and head usually without or with only very slightly developed pale stripes ( Fig. 3D View FIGURE 3 )....................... 4.

2. Yellow stripes and spots on whole body well developed: first transverse elytral stripe (antemedian) large, “zigzag-like”, distance between first and second transverse stripe much smaller than width of first or second stripe ( Fig. 2G View FIGURE 2 ); abdominal sternites almost covered by yellow, dense pubescence ( Fig. 2C–D View FIGURE 2 ). Distribution range— Iran ( Fig. 5 View FIGURE 5 )............................................................ P. arcuatus shirazensis Królik, Kruszelnicki, Lasoń & Walczak , new subspecies

- Yellow stripes and spots on body less developed: first transverse elytral stripe expanded horizontally, in presutural area not prolonged to spots behind scutellum, distance between first and second transverse stripe much greater than width of first or second stripe ( Fig. 2H View FIGURE 2 ); yellow pubescence covering, at most, half of abdominal sternites........................... 3.

3. Antemedian transverse stripes on elytra extended horizontally, sometimes split into two spots, stripes behind middle of elytra regularly arching forwards ( Figs. 1.A–B View FIGURE 1 ). Distribution range—Europe, North Africa & Asia Minor......................................................................................... P. arcuatus arcuatus (Linnaeus, 1758) View in CoL

- Antemedian transverse stripes on elytra always divided into a strongly inclined outer stripe, well separated from the inner spot, stripes behind middle of elytra strongly arched forwards ( Figs. 1.C–D View FIGURE 1 ). Distribution range— Crete ( Greece).......................................................................... P. arcuatus ghidottii Pesarini & Sabbadini, 2011 View in CoL

4. Transverse stripes of elytra usually well developed, complete ( Figs. 1.I–J View FIGURE 1 ); antemedian stripes sometimes split into two spots. Distribution range— Kyrgyzstan............................................. P. arcuatus kirgizicus Lazarev, 2010 View in CoL

- Transverse stripes of elytra not so obvious, mostly reduced to small spots. Distribution range—Transcaucasia............ 5

5. Legs and antennae completely black, body pubescence usually white ( Figs. 1.G–H View FIGURE 1 ). Distribution range— Armenia, Azerbaijan, Iran and Turkmenistan.................................................. P. arcuatus lugubris (Ménétriés, 1832) View in CoL

- Legs and antennae partly red; body pubescence yellow ( Figs. 1.K–L View FIGURE 1 ). Distribution range— Armenia, Azerbaijan and NE Turkey................................................................. P. arcuatus multiinterruptus Pic, 1933 View in CoL .

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Cerambycidae

Genus

Plagionotus

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