Bocchus beketovi Kochetkov, 2024

Kochetkov, D. N., 2024, NEW RECORDS OF PINCER WASPS (HYMENOPTERA: DRYINIDAE) FROM RUSSIA, WITH DESCRIPTION OF A NEW SPECIES OF BOCCHUS ASHMEAD, 1893, Far Eastern Entomologist 498, pp. 1-12 : 5-7

Bocchus beketovi Kochetkov , sp. n.

https://zoobank.org/NomenclaturalActs/ 12441796-FDA1-4BFF-99B6-C936E4A173A2

Figs 7–13 , 18

TYPE MATERIAL. Holotype – ♀, Russia: Zabaikalskii Krai , 35 km WNW of Borzya, Adon-Chelon mountains, Daurskii Nature Reserve, 50°28'01"N 116°04'07"E, 07.VII 2022 (DK) . Paratype: same place, 16.VII 2023, 1 ♀ (DK).

DIAGNOSIS. FEMALE. Head reddish, dull, completely granular; mesosoma black; scutum and scutellum mostly dull and granulate; notauli complete, clearly visible; metanotum shiny, noticeably shorter than scutellum; claw enlarged with one row of seven teeth. Segment 5 of protarsus with inner membranous band.

MALE. Unknown.

Only two species of the Bocchus Ashmead , described from females are known from the Eastern Palaearctic. Female B. szelenyii differs from the new species in the following: head black, shiny, unsculpted, except for a few short carinae on face; mesosoma testaceous-reddish, except for scutellum and propodeum black; scutum and scutellum shiny, smooth, finely punctured; notauli almost complete, hardly visible, obsolete near posterior margin of scutum; metanotum dull, slightly shorter than scutellum; fore wing with one dark transverse band; enlarged claw with 1 row of five teeth; segment 5 of protarsus without inner membranous band. Female B. parthicus distinguishes from the new species by the combination of the following characters: fore wing with two dark transverse stripes; mesosoma reddish (only posterior margin of scutellum brown, and propodeum darkened); head smooth, shiny, punctate; face with lateral carinae surrounding orbits and directed towards antennal torules; scutum, scutellum and metanotum shiny, smooth, finely punctured; enlarged claw with 1 row of six teeth; segment 5 of protarsus without inner membranous band.

DESCRIPTION FEMALE. Fully winged; body length 3.7 mm. Head reddish, except ocellar triangle black, mandible yellow; antenna testaceous; mesosoma black, pronotum with reddish-brown spots on the lateral sides; tegulae and petiole testaceous; metasoma dark brown; legs testaceous. Antenna clavate; antennomeres in following proportions: 12:6:9:7.5:7:7:6.5:6.5:6:8.5. Head dull hairy, completely granulate, with short keels near inner margin of compound eye; frontal line complete; occipital carina complete; POL = 4; OL = 3; OOL = 7; OPL = 6,5; TL = 8; mandible quadridentate, with rudimentary tooth between two upper teeth. Pronotum slightly shine, hairy, rugose, crossed by transverse impression, with longitudinal keels laterally; pronotal tubercle reaching tegula. Scutum dull, hairy, granulate. Notauli complete, clearly visible. Scutellum dull, granulate. Metanotum shiny, reticulate rugose, distinctly shorter than scutellum. Propodeum reticulate rugose; posterior surface with two longitudinal carinae. Fore wing with one dark transverse band ( Fig. 7 ), with pterostigma short and narrow. Segment 3 of protarsus with distal apophysis which longer than segment 3. Protarsal segments 1–4 in following proportions: 13:2:2:9. Enlarged claw with 1 row of seven teeth and one long bristle. Segment 5 of protarsus with one preapical lamella, inner membranous band and two long bristles. Tibial spurs 1/1/1.

MALE. Unknown.

HOSTS. Unknown.

ETYMOLOGY. The species is named after the Pyotr Ivanovich Beketov (1600– 1671), a Russian pioneer, who founded of Siberian cities: Yakutsk (1632), Olyokminsk (1635), Chita (1653), and Nerchinsk (1653).

DISTRIBUTION. Russia: Eastern Siberia (Zabaikalskii Krai). The new species is known only from the type locality .

ECOLOGY. The new species was collected in a mountain meadow steppe.

REMARKS. Quite possible that described female may be the opposite sex of B. sinensis Xu et He, 1997 , known from northeastern China by male.

Key to the Eastern Palaearctic species of Bocchus Ashmead (Females)

1. Fore wing with one dark transverse band ........................................................................... 2

– Fore wing with two dark transverse bands. Turkmenistan................................................. ......................................................................................... B. parthicus Ponomarenko, 1979

2. Head black, shiny, mainly smooth; mesosoma testaceous-reddish, except scutellum and propodeum black; scutum and scutellum shiny, finely punctate; notauli almost complete, hardly visible, obsolete near posterior margin of scutum; enlarged claw with 1 row of five teeth and one long bristle; segment 5 of protarsus with one preapical lamella and two long bristles. Mongolia.............................................................. B. szelenyii Móczár, 1974

– Head reddish, dull, completely granulate; mesosoma black; scutum and scutellum dull, granulate; notauli complete, clearly visible; enlarged claw with 1 row of seven teeth and one long bristle; segment 5 of protarsus with one preapical lamella, inner membranous band and two long bristles. Russia: Zabaikalskii Krai ............................ B. beketovi sp. n.

Figures

Figs 7–13. Bocchus beketovi Kochetkov, sp. n., female. 7, 9, 10 – holotype, 8, 11–13 – paratype; 7 – habitus, dorsal view; 8 – habitus, lateral view; 9 – mesosoma, dorsal view; 10 – propodeum, posterodorsal view; 11 – head, dorsal view; 12 – head, frontal view; 13 – antenna. Scale bar: 0.5 mm for 7, 8; 0.1 mm for 9–13.

Figs 14–18. Female chelae: 14 – Gonatopus helleni; 15 – G. pulicarius; 16 – Anteon thai; 17 – A. munitum; 18 – Bocchus beketovi sp. n.; Scale bar: 0.1 mm.