Conocephalus (Anisoptera) beybienkoi Storozhenko, 1981

Myagmar, G. & Gantigmaa, Ch., 2023, Review of the genus Conocephalus (Orthoptera: Tettigoniidae) in Mongolia, Far Eastern Entomologist 479, pp. 7-12 : 9-11

Conocephalus (Anisoptera) beybienkoi Storozhenko, 1981

Figs 7 , 8

Conocephalus (Anisoptera) beybienkoi : Storozhenko, 2004: 82; Zhou et al., 2010: 51 ;

Gantigmaa & Myagmar, 2022: 327.

MATERIAL. Mongolia: Dornod Province, western shore of the Buir Lake , 47°38' N, 117°34' E, 583m, 31.VII 2015, 1 ♂ (brachyptera form), 2 ♀ (macroptera form) (Myagmar) .

REMARKS. This species was firstly recorded from Mongolia by Gantigmaa & Myagmar (2022). The species typically found in wet meadows with dense vegetation. On the western shore of Buir Lake the species habits together with C. chinensis . The long-winged form of C. beybienkoi is found for the first time and described below.

DISTRIBUTION. Mongolia ( Fig. 9 ), Russia (south of the Chita and Amur regions, Khabarovsk and Primorsky Territory), NE China, Japan (Hokkaido).

DESCRIPTION OF MACROPTERA FORM. Long-winged female ( Fig. 8 ) is similar to typical brachyptera form and characterized as follow: fastigium of vertex relatively broad, 1.5–2 times narrower than 1st segment of antennae; lateral lobes of pronotum with distinct humeral sinus; fore femora 1.1–1.2 times shorter than pronotum; hind femora ventrally with 1–2 outer rudimentary spines; subgenital plate trapezoidal; ovipositor weakly upcurved, 1.2–1.3 times shorter than hind femur, but differs by tegmina reaching the half of hind tibia and hind wings on 3mm longer than tegmina. Body in macropterous form green or greenish brown; dorsal surface of head and pronotum with a brown longitudinal strip; tegmina unicolors without spots and stripes; legs green or greenish brown; ovipositor pale brown.

MEASUREMENTS (in mm). Female, forma macroptera: length of body 16–18; pronotum 2.6–2.9; tegmen 17–18; hind femur 10.5–11; ovipositor 9–9.5.

Key to Mongolian species

1(2) Fastigium of vertex 2.4-3.3 times narrower than 1st antennal segment ( Fig. 1 ). Ovipositor straight and short, 1.5–1.7 times shorter than hind femur ( Fig. 2 ) ......... C. chinensis

2(1) Fastigium of vertex 1.3–2.1 times narrower than 1st antennal segment ( Fig. 4 ). Ovipositor longer or only 1.3 times shorter than hind femur ......................................................... 3

3(4) Posterior margin of male X tergite with short lophi directed downward ( Fig. 3 ). Ovipositor 1.2–1.3 times longer than than hind femur ................................................. C. fuscus

4(3) Posterior margin of male X tergite with elongated lophi directed horizontally ( Figs 6, 7 ). Ovipositor 1.1–1.3 times shorter than hind femur ............................................................. 5

5(6) Posterior margin of male X tergite with narrow lophi ( Fig. 6 ). Ovipositor strongly upcurved ( Fig. 5 ) ............................................................................................... C. dorsalis

6(5) Posterior margin of male X tergite with broad lophi ( Fig. 7 ). Ovipositor weakly upcurved ( Fig. 8 ) .......................................................................................................... C. beybienkoi

Figures

Figs 1–7. Conocephalus spp. 1, 2 – C. chinensis: 1 – ovipositor, lateral view, 2 - head, dorsal view; 3 – C. fuscus, apex of male abdomen, dorsal view; 4–6 – C. dorsalis: 4 – head, dorsal view, 5 – ovipositor, lateral view, 6 – apex of male abdomen, dorsal view; 7 – C. beybienkoi, apex of male abdomen, dorsal view. Scale bars = 1 mm.

Fig. 8. Conocepalus beybienkoi, long-winged female, lateral view.

Fig. 9. Distribution map of Conocephalus spp. in Mongolia.