Eharius (Eharius) kostini (Kolodochka, 1979)

Kolodochka, L. A., 2023, The Predatory Mites (Phytoseiidae, Parasitiformes) In The Fauna Of Ukraine: Genera Paragigagnatus, Carinoseius, Kampimodromus, Eharius, Typhlodromips, And Euseius, Zoodiversity 57 (6), pp. 477-506 : 492-494

Eharius (Eharius) kostini (Коlоdосhka, 1979) ( fig. 6 )

Kampimodromus kostini Ко 1оdосhka, 1979 a: 8; Begljarov, 1981: 8; Karg, 1993: 178.

Eharius (Eharius) kostini : Коlоdосhka, 1995 a: 86; Chant & McMurtry, 2006: 98, 2007: 39.

Material. Type. Holotype}: #1793 b, Ukraine: Crimea, Razdolnensky, northwestern part of the Crime- an Peninsula , seaside steppe, Marrubium vulgare , 29.05.1976 (Kolodochka) ( SIZK); paratype: 1 {, same slide and locality.

Nоn-type. 275 specimens (180}, 95 {) — Crimea and Mykolayiv Region .

R e d e s c r i p t i o n. F e m a l e. Dorsal shield ( fig. 6 , 1 ) well sclerotised, ovoid, with small lateral emarginations, with convex sculpture, longitudinal folding is pronounced on the sides of the shield; 2 pairs of solenostomes (iv deep crater-shaped, ic good visible) ( fig. 6 , 10 ). Dorsal setae short, thin, flexible, smooth with exception PM 3, which are longer than the rest, thickened and slightly serrated, often pointed, occasionally ending with a tiny club. Setae AM 1 extend beyond bases of setae AL 1. Other setae of dorsal shield much shorter than distance from their thecae to thecae of subsequent setae. Peritremes short, not reaching level of seta AS ( fig. 6 , 5 ). The ventrianal and genital shields are well sclerotised, the sternal shield is much weaker. Setae MSt located on separate scutes, sometimes merging with sternal shield with narrow bridge. Genital shield narrow, long; genital valve wider than posterior part of shield proper. Opistoventral setae of pairs MV 1 and MV 2 are absent. Ventrianal shield ( fig. 6 , 2 ) pear-shaped, wider in posterior half than genital shield, covered with distinct striation; anal pores small, widely spaced. There are specimens with additional setae on the shield ( fig. 6 , 11) or with an anomalous arrangement of preanal setae V 2 displaced on the membrane ( fig. 6 , 12, 13). Metapodal scutes narrow, elongated, curved anteriorly, smaller than posterior ones ( fig. 6 , 3 ). Posterior end of peritremal shield crescent-shaped, peritremes short, not reaching level of setae AS ( fig. 6 , 4 ). Gnathobase noticeably elongated. The ratio of its length, measured from the base to the end of the cornicula, to the width of the base is 1.75:1. For example, in species of a close genus, Kampimodromus aberrans , this ratio is 1:1. The second basal segment of the chelicerae is strongly elongated.

Measurements. Lds 344, Wds 189, Lvas 85; Wvas 60; Lian 31, Ltar IV 58; длина щетинок: AD 1 12; AD 2 12; AD 3 12; AD 4 12; PD 2 15; PD 4 5; AM 1 25; AM 2 12; AL 1 25, AL 3 27; AL 4 26; PL 1 23; PL 3 10; PM 1 22; PM 3 22; PM 4 37; AS 25; PS 16; PV 17.

Male. Ventrianal shield with reticulate sculpture; preanal setae 3 pairs; anal pores small, round ( fig. 6 , 8 ). Spermatodactyl is massive, curved ( fig. 6 , 9 ). Lds 270.

D i a g n o s i s. In addition to the characters indicated in the key, E. (E.) kostini is characterized by the following features: the presence of thickened and longest, slightly serrate, often pointed or occasionally ending in a tiny club setae PM 4 on the dorsal shield; ventrianal shield wider in it posterior half than genital shield; seta AL 1 is shifted laterally with respect to the common arc of setae of row AL.

D i s t r i b u t i o n, h a b i t a t, o c c u r r e n c e. Europe ( Ukraine), Central Asia ( Kyrgyzstan). In Ukraine: steppe Crimea, grasses (one chance finding of a female on a coniferous shrub Biota orientalis in a decorative planting); reaches a high abundance on Marrubium vulgare , with which it is closely related; frequent.

Notes. 1. Description, illustrations and morphometry are based on the holotype.

2. Concentrated in the inflorescences of the host plant. Judging by the structure of the chelicera as a whole and by the position of the teeth in particular, the probability of pollenophagy in E. kostini is very high (see also the note in the essay by E. kuznetzovi ).

Subgenus Zavicus Arutunjan

Zavicus Arutunjan, 1973: 115 .

T y p e s p e c i e s: Amblyseius marzhaniani, Arutunjan, 1969: 42 .

Eharius (Zavicus) : Kolodochka, 1995: 92.

Figures

Fig. 6. Eharius (Eharius) kostini (Коlоdосhka)} (1–7, 11), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — seta AS, peritreme with peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil; 10 — solenostome iv; 11–13 — samples of aberrations in the placement of preanal setae.

Fig. 1. Paragigagnathus insuetus (Livschitz & Kuznetzov, 1972)} (1–7), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil; 10 — seta PM4; 11 — seta PD4; 12 — гнатосома (seta no shown), Gb — gnathobrachium.

Fig. 10. Euseius ucrainicus (Ко1оdосhkа, 1979)} (1–8), {(9, 10): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plate; 4 — posterior part of peritremal shield; 5 —chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 5. Kampimodromus karadaghensis Kolodochka 2005} (1–7, 11), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil; 10 — macroseta on tarsus of leg IV.

Fig. 2. Carinoseius improvisus (Kolodochka, Bondarev, & Gwiazdowicz, 2015), comb. n.} (1–11): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — seta AS and peritreme; 8 — solenostome iv; 9 — solenostome il; 10 — solenostome is; 11 — solenostome ic.

Fig. 3. Kampimodromus aberrans (Oudemans, 1930 a)} (1–7), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 4. Kampimodromus corylosus Kolodochka 2003} (1–7), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicerae with spermatodactil.

Fig. 8. Typhlodromips mistassini (Chant & Hansell)} (1–8), {(8, 9): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plates;4 — caudal part of peritremal shield;5 — chelicera; 6 — spermatheca;7 — fragment of leg IV; 8 — ventrianal shield; 9 — Dm of chelicerae with spermatodactil.

Fig. 9. Euseius finlandicus (Oudemans, 1915)} (1–8), {(9, 10): 1 — dorsal shield; 2 — ventral body surface; 3 — metapodal plate; 4 — posterior part of peritremal shield; 5 — chelicera; 6 — spermatheca; 7 — fragment of leg IV (only macrosetae shown); 8 — ventrianal shield; 9 — chelicerae with spermatodactil.