Allantus nigrolinearis (Zirngiebl, 1937),

Liston, Andrew D., Jacobs, Hans-Joachim & Prous, Marko, 2015, The Sawflies of Crete (Hymenoptera, Symphyta), Deutsche Entomologische Zeitschrift 62 (1), pp. 65-79: 65

publication ID

http://dx.doi.org/10.3897/dez.62.4737

publication LSID

lsid:zoobank.org:pub:6CEA4772-755A-464E-B641-BE82D01160E2

persistent identifier

http://treatment.plazi.org/id/8B6356A3-6B99-07FA-AFEE-88B770B8B380

treatment provided by

Deutsche Entomologische Zeitschrift by Pensoft

scientific name

Allantus nigrolinearis (Zirngiebl, 1937)
status

new status

Taxon classification Animalia Hymenoptera Tenthredinidae

Allantus nigrolinearis (Zirngiebl, 1937)  new status

Emphytus balteatus var. nigrolinearis  Zirngiebl, 1937: 646; ♀, holotype [not examined]. Type locality: Kristallenia (Kreta) [= Panagia Kristalenia, Lasithi Plateau, East Crete]. Blank 1996; synonym of Allantus balteatus  (Klug, 1818). Lacourt 1999; synonym of Emphytus laticinctus  (Serville, 1823).

Allantus didymus var. nigrolinearis  (Zirngiebl, 1937); Schedl 1981; misidentification.

Material.

Crete; 2♀♀, 1♂, Agia Irini, 26.iv.2013. 1♀, 1♂, Agia Irini, 28.iv.2013.

Barcode data.

The barcodes of two sequenced Allantus nigrolinearis  specimens (DEIGISHym20641, 20642) are identical and amongst 34 sequenced specimens of Allantus didymus  and Allantus laticinctus  sensu lato, are most similar to those of Allantus ariadne  Liston and Jacobs, 2012 from Cyprus (DEIGISHym11089, 11093), with divergence of about 3.9%. Minimal divergence of Allantus nigrolinearis  from Allantus laticinctus  (France BC ZSM 01149 and Italy, Sicily DEIGISHym11042) is 6.4%. Noteworthy is that divergence of 5.3% between Allantus nigrolinearis  and Allantus didymus  (Klug, 1818) (Italy DEIGISHym18775, and Germany; 10 specimens) is somewhat less than from Allantus laticinctus  . Several other segregates cluster around the four named taxa in the barcode similarity tree, indicating that the species group requires revision and may contain more taxa than previously thought.

As noted by Blank (1996), Zirngiebl apparently had no clear concept of species, subspecies and varieties. His var. nigrolinearis  was described within a paragraph discussing colour variability of a reared series of female Emphytus balteatus  from Germany. However, his wording does not make it clear what relationship he considered his new variety to have to the other specimens. In the absence of any clear indication that Zirngiebl considered nigrolinearis  to be of infrasubspecific rank, the name is available ( ICZN 1999, Article 45.6.4.).

Female Allantus nigrolinearis  differ from those of Allantus laticinctus  and Allantus ariadne  in having an uninterrupted, broad, median, black vitta through the otherwise red sterna of the abdomen (Fig. 2). In the other species a number of sterna are entirely red. The metatibia of Allantus nigrolinearis  females is also darker: apical half, and base narrowly, fuscous. In the other species the metatibia is entirely red except for apex. In two Allantus nigrolinearis  the otherwise red abdominal terga 3-6 have a median black stripe (Fig. 3). In the third female, this stripe is interrupted on tergum 5 and the metatibia is somewhat paler than in the other specimens. The four basal serrulae of the lancet of Allantus nigrolinearis  (Fig. 1) are subtriangular and similar to the other serrulae, whereas the four basal serrulae of Allantus laticinctus  and Allantus ariadne  are more rounded than the others ( Liston and Jacobs 2012, Figs 4, 6). The males of Allantus nigrolinearis  and Allantus ariadne  are indistinguishable, apparently including their penis valves ( Allantus nigrolinearis  : Fig. 4. Allantus ariadne  : Liston and Jacobs 2012, Fig. 7), but differ in leg colour from Allantus laticinctus  . In Allantus nigrolinearis  and Allantus ariadne  the mid femur is almost entirely black except for the apex, but in Allantus laticinctus  approximately the apical half of the mid femur is pale. The holotype of var. nigrolinearis  was mistakenly considered by Schedl (1981, 1993) to belong to Allantus didymus  (Klug, 1818) ( Schedl 2011). Schedl (2011) added a record from Crete of a male specimen which he determined as Allantus didymus  . However, confusion of Allantus didymus  with Allantus laticinctus  (sensu lato) has been widespread, particularly of the males ( Koch 1988). Until more convincing evidence for the occurrence of Allantus didymus  in Crete is presented, the name should be removed from the faunal list of the island.

Allantus laticinctus  has only definitely been reared from Rosa  , in central and western Europe ( Taeger et al. 1998, Knight 2006). The host(s) of Allantus nigrolinearis  are likely to be Rosaceae  (because the known hosts of other species in this complex are Rosaceae  ), but as for Empria archangelskii  (see below), several host species seem possible.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Tenthredinidae

Genus

Allantus

Loc

Allantus nigrolinearis (Zirngiebl, 1937)

Liston, Andrew D., Jacobs, Hans-Joachim & Prous, Marko 2015
2015
Loc

Emphytus balteatus var. nigrolinearis

Klug 1813
1813
Loc

Emphytus laticinctus

Klug 1813
1813