First record of the ant-loving cricket Myrmecophilus crenatus Gorochov, 1986 (Orthoptera, Myrmecophilidae) in Kazakhstan

The ant-loving cricket Myrmecophilus crenatus Gorochov, 1986 was found in the Turkestan oblast of southern Kazakhstan. This is the first species record for this area. Thus, the current fauna of ant-loving crickets in Kazakhstan includes three species – Myrmecophilus crenatus, M. acervorum (Panzer, 1799) and Bothriophylax semenovi (Miram, 1930).


Introduction
Ant-loving crickets (Myrmecophilidae Saussure, 1874) are the obligate inquilines within ant and termites nests or burrows of various rodent and other vertebrate species. The crickets are very small, wingless and flattened, yellow, brown or nearly black in color. Ant-loving crickets do not produce sound and lack both wings and tympanal organs on the front tibia. Two subfamilies -Botryophilacinae Miram, 1934 (vertebrates guest) and Myrmecophilinae Saussure, 1874 (ant and termites guest). They containing 6 genus and fewer than 100 species. In Kazakhstan, the fauna of ant-loving crickets has not been studied enough. Up to the present time only 2 species -Bothriophylax semenovi (Miram, 1930) and Myrmecophilus acervorum (Panzer, 1799) (Childebaev & Storozhenko 2004;Childebaev et al. 2014) were known in Kazakhstan fauna.
Ant-loving cricket Myrmecophilus crenatus Gorokhov, 1986 belongs to the subgenus Paramyrmecophilus Gorochov, 1986 of the genus Myrmecophilus Borowiec, 1984 of the subfamily Myrmecophilinae of the family Myrmecophilidae. The male body length is 2.4 mm, female is 2.6 mm long; pronotum of male is 0.8; female is 0.9; hind femur is 1.5 in both sexes; ovipositor is 1.1 mm. Coloring is light, yellowish. Head with small dark eyes. The width of the antennal cavities is approximately 1.5 times less than the distance between them. The apical segment of the maxillary palps is almost 2 times longer than the 3rd segment and approximately 2.5 times longer than the 4th segment. The width of the hind femur is almost 1.5 times less than its length. Hind tibia about 1.4 times shorter than hind femur. The upper edge of the hind tibia is almost straight, and the lower one is arched. On the outside of the hind tibia there are 1 spike and 3 spurs. The longest of them is superior, equal in length to half of the hind tibia. The spike is almost 2 times shorter than it. The average spur is 1.5 times shorter than the spike. The lower spur is almost 2 times shorter than the average. A slightly darker transverse strip extends along the posterior edge of the tergites of the chest and abdomen. Cerci more or less elongated, equal in length to the hind tibia. Ovipositor slightly longer than hind tibia. The top of the internal folds of the ovipositor is wide, with almost identical large teeth. The view was described by A.V. Gorokhov from the Mogoltau mountains on Uzbekistan-Tajikistan border (Gorochov 1986, Cigliano et al. 2019. Like many other members of the family, it is an obligate inquiline of ants.

(2)
The body is not disc-shaped.

Material and methods
The material was collected in the Turkestan region (formerly South Kazakhstan) within the project "Comprehensive assessment of the state of the environment and the health of the population of the city of Kentau and surrounding settlements" section "Assessment of the State of the Fauna of the Kentau City Agglomeration". The species was determined by I.I. Temreshev. For the identification, clarification of the biology and distribution of the cricket ant we referred to Gorochov (1980, 1986), Storozhenko (2004, and Cigliano et al. (2019). To determine the social insects in the nests of which M. crenatus was found, sources from the list of literature were used (Dlussky 1981, Seifert 2012, Zhuzhikov 1979. Material is stored in the personal collection of authors.  (Figs 1-3).

Discussion
We discovered the ant-loving cricket in the nest of T. erraticum that allows us to more accurately evaluate its hosts, since the original description (Gorochov 1986) Gorochov, 1986 from Kazakhstan simply indicates "anthill" for the holotype. We supposed that the occurrence of antloving cricket in the nest of the Turkestan termite A. turkestanicus, was rather accidental, since there were anthills of different ant species T. erraticum, Messor aralocaspius (Ruzsky, 1902), and Cataglyphis aenescens (Nylander, 1849). It is possible that a female of ant-loving cricket was found in a nest of Turkestan termite due to resettlement (sort of "transshipment base" during migration).
The ant-loving cricket was not previously observed in Kazakhstan (Childebaev & Storozhenko 2004). We suggested that the M. crenatus probably inhabit the Kentau city agglomeration (the Turkestan region, Kazakhstan), but was not found due to its rarity. This is its main difference from another ant cricket M. acervorum, which is invasive species in Kazakhstan (Childebaev et al. 2014) and neighboring Uzbekistan (Lebedeva 2017). In future, additional finds of M. crenatus are possible in other areas of the south Kazakhstan. Thus, now Myrmecophilidae family in the Republic of Kazakhstan includes 3 species -M. crenatus, M. acervorum and B. semenovi.