Bocchus rex, Olmi & Eggs & Capradossi & van de Kamp & Perkovsky & Guglielmino & Vasilenko, 2022

Olmi, Massimo, Eggs, Benjamin, Capradossi, Leonardo, van de Kamp, Thomas, Perkovsky, Evgeny E., Guglielmino, Adalgisa & Vasilenko, Dmitry V., 2022, A new species of Bocchus from upper Eocene Rovno amber (Hymenoptera, Dryinidae), Journal of Hymenoptera Research 92, pp. 257-272 : 257

publication ID	https://dx.doi.org/10.3897/jhr.92.87084
publication LSID	lsid:zoobank.org:pub:40679F47-8A7D-46FE-9CA9-69B0A51A4258
persistent identifier	https://treatment.plazi.org/id/C24153EA-53FD-40CD-96FB-08BEA582D2BE
taxon LSID	lsid:zoobank.org:act:C24153EA-53FD-40CD-96FB-08BEA582D2BE
treatment provided by	Journal of Hymenoptera Research by Pensoft
scientific name	Bocchus rex
status	sp. nov.

Treatment

Bocchus rex sp. nov.

Type material.

Holotype (= specimen 1; Fig. 1 View Figure 1 ): f#, in SIZK: Ukraine: Les-1, specimen in upper Eocene Rovno amber, collected in Lisove amber mine in Volyn Region of W Ukraine, 9 km east of Manevichi (the former Manevichi district, now Kamen-Kashirsky district). Horizon: Priabonian (35-38 Ma). Paratype (= specimen 2; Figs 2 View Figure 2 , 3 View Figure 3 ): 1f#, in SMNS: UKR-1, specimen in Rovno amber (unknown locality).

Diagnosis.

Macropterous female of Bocchus (Figs 1a-d View Figure 1 , 2a-c View Figure 2 ) with OOL more than three times as long as OPL (Fig. 1b View Figure 1 ); epicnemium concealed (Fig. 1d View Figure 1 ); notauli incomplete, reaching about 0.75 × length of mesoscutum (Figs 1b View Figure 1 , 2c View Figure 2 ); fore wing with one dark transverse band (Figs 1a View Figure 1 , 2c View Figure 2 ); petiole distinctly visible (Fig. 1a View Figure 1 ); enlarged claw (Figs 1e, f View Figure 1 , 2d View Figure 2 , 4a View Figure 4 ) with one long row of small teeth, in addition to one lamella; protarsomere 5 (Figs 1e, f View Figure 1 , 2d View Figure 2 , 4a View Figure 4 ) with distal apex broad and dark pigmented, with one preapical lamella and inner band, without bristles on inner margin.

Description of the female

(Figs 1 View Figure 1 - 4a View Figure 4 ). Fully winged (Figs 1a-d View Figure 1 , 2a-c View Figure 2 ); length 2.8-3.2 mm (holotype 3.2 mm). Holotype ferruginous-black; paratype black. Antenna clavate (Fig. 1a, b View Figure 1 ), without ADOs; antennomeres in following proportions: 9:6:6:5:5:4.5:4.5:4.5:4.5:6; antennomere 9 slightly longer than broad (4.5:3). Head dull, completely granulate, not reticulate rugose; frontal line complete; occipital carina complete; POL = 3; OL = 2; OOL = 5; OPL = 6.5; TL = 6; greatest breadth of lateral ocellus shorter than POL (2:3). Mandible quadridentate, with one smaller intermediate tooth (Fig. 1d View Figure 1 ). Mesosoma longer than head (18:7), shorter than metasoma (18:23). Pronotum crossed by strong transverse impression, with sculpture not distinct, laterally with some longitudinal keels; pronotal tubercle reaching tegula. Mesoscutum dull, granulate. Notauli incomplete, reaching about 0.80 × length of mesoscutum (Figs 1b View Figure 1 , 2c View Figure 2 ). Sculpture of mesoscutellum and metanotum not distinctly visible. Epicnemium concealed (Fig. 1d View Figure 1 ). Metapectal-propodeal complex not distinctly visible. Fore wing with one dark broad transverse band (Figs 1a View Figure 1 , 2c View Figure 2 ); distal part of 2r-rs&Rs vein much longer than proximal part (17:5). Petiole very long, much shorter than rest of metasoma (4:19). Proleg ratio: 12 (procoxa): 10 (protrochanter): 24 (profemur): 17 (protibia): 13 (protarsomere 1): 2 (protarsomere 2): 3 (protarsomere 3): 7 (protarsomere 4): 11 (protarsomere 5). Enlarged claw (Figs 1e, f View Figure 1 , 2d View Figure 2 , 4a View Figure 4 ) with one long row of small teeth (number not distinct) + one lamella. Protarsomere 5 (Figs 1e, f View Figure 1 , 2d View Figure 2 , 4a View Figure 4 ) with distal apex broad and dark pigmented, with one preapical lamella and inner band, without bristles on inner margin. Rudimentary claw present, although hardly visible. Mesoleg ratio: 9 (mesocoxa): 4 (mesotrochanter): 19 (mesofemur): 21 (mesotibia): 30 (tarsus). Metaleg ratio: 10 (metacoxa): 6 (metatrochanter): 27 (metafemur): 30 (metatibia): 25 (tarsus). Tibial spurs 1,?, 1.

Male. Unknown.

Hosts. Unknown.

Etymology.

Bocchus was the name of two kings of Mauretania (the first being father-in-law to the Numidian King Jugurtha) and Bocchus rex is an appropriate epithet of this nice species with its regal look.

State of preservation of paratype

(= specimen 2). The head and thorax are well preserved but each have a fissure dorsally (Fig. 3c, e View Figure 3 ). The metasoma has been completely crushed (Figs 2c View Figure 2 , 3a, c, e, g View Figure 3 , Suppl. material 1: Video S1). Its size and form can be roughly estimated from the cavity formed in the amber. However, cavities are also present laterally between the head and the thorax (Figs 2a-c View Figure 2 , 3a, c, e, g, i View Figure 3 , Suppl. material 1: Video S1). Unfortunately, the resolution of the SR-µCT scan was too low to 3D-reconstruct the chelae in great detail. In the head, the partially preserved optical ganglion complex, presumably the optic lobes (= medullae), is clearly visible (Fig. 3b, d, f, h, j View Figure 3 , Suppl. material 1: Video S1). It is the second report of optic lobe preservation for Rovno amber arthropods (cf. fig. 1 of Sukhomlyn et al. 2022). Other internal structures are partially preserved; however, it is unclear whether they belong to the optical system or different brain regions, or are partially preserved muscles of the mouthparts (Fig. 3b, d, f, h, j View Figure 3 , Suppl. material 1: Video S1). In addition, many muscles in the thorax, the legs and, occasionally, in the metasoma are still preserved (Fig. 3b, d, f, h, j View Figure 3 , Suppl. material 1: Video S1). However, as the depicted set of muscles is by no means complete and plays no role in species identification, it will not be discussed further here.