Hebrus (Hebrus) pilipes Kanyukova, 1997

Kanyukova, E. V., Stolbov, V. A., Sheykin, S. D. & Ivanov, S. A., 2021, New data on Corixidae and Hebridae (Heteroptera) of Kazakhstan, Zoosystematica Rossica (China) 30 (2), pp. 339-345 : 342-343

Hebrus (Hebrus) pilipes Kanyukova, 1997

( Figs 4, 5 )

Material examined. Kazakhstan, Turkistan Prov. , Tulkibas Distr. , Aksu-Zhabagly Nature Reserve, Taldybulak River, 42°24′04″N, 70°28′14″E, 1450 m, 10.VIII.2019, S. Sheykin leg., 2 females ( ZMTU) .

Bionomics. The specimens of this species were found on the banks of a small mountain river with a turbulent current and rapids (Fig. 7 as Electronic supplementary material, see the “Addenda” section) and were collected from mosses among the stones using Tullgren funnels.

Judging by the dates of collection of South Russian and Middle Asian* specimens stored in the ZISP collection, H. pilipes occurs from early spring to late summer. According to Kanyukova (1997), the specimens collected in the Crimea across years are dated from 7 May to 29 August, in the Krasnodar Territory, from 24 April to 26 September, in Turkmenistan, on 19–30 October. In 1943–1944, Kiritshenko (1964) collected the species in Tajikistan along the banks of streams even in winter months, from 19 January to 29 August.

Distribution. South of Russia: Astrakhan Province, Crimea, North Caucasus: Krasnodar Territory and the Republic of Adygea. Known from Transcaucasia, Turkey and Iran. In Middle Asia, the species range extends eastward to Tajikistan ( Kanyukova, 1997, 2006). The only female from the vicinity of Kyzylorda ( Fig. 6 ), collected on 1 July 1973 by Asanova was recorded by the first author from Kazakhstan ( Kanyukova, 1997).

Note. Along with H. pilipes distributed in the south, another species of the genus, H. (Hebrus) pusillus (Fallén, 1807) , was recorded in the north (Kokshetau) and the east of Kazakhstan (Bolshaya Bukon’ River). In the southern and eastern regions of the country, a third species, H. (Hebrusella) ruficeps Thomson,1871 , is known. Before the revision of the genus, specimens of H. pilipes from the south of the former USSR, in particular from the Astrakhan Province and the Crimea ( Jakovlev, 1871, 1906), were erroneously indicated as H. pusillus , and those from Tajikistan and Turkmenistan, as H. pusillus and H. montanus Kolenati, 1857 ( Kiritshenko, 1964).

Two collected females differ in colour: one of them is dark, another is pale ( Figs 4, 5 ). Hebrus pilipes differs from the closely-related H. pusillus , which is widespread in northern Kazakhstan, in the yellow colour of the first and second segments of the antennae and legs, as well as in the structural characters of the tibia of the male hind legs, which are noticeably thickened in the middle and densely pubescent, they have a row

E.V. Kanyukova et al. New data on Corixidae and Hebridae of Kazakhstan of long setae on the upper side, and several rows of shorter and thicker setae on the inner side ( Kanyukova, 1997). In H. pusillus , the antennae and legs are mostly brown, the hind tibiae are not thickened and do not have dense pubescence.

Figures

Figs 6. Collecting localities of new and adittional records of water bugs in Kazakhstan.

Figs 4, 5. Hebrus pilipes Kanyukova,1997 from Aksu-Zhabagly Nature Reserve, dark (4) andpale (5)forms.