Leptotrombidium bochkovi, STEKOLNIKOV, 2013

STEKOLNIKOV, ALEXANDR A., 2013, <strong> <em> Leptotrombidium </ em> (Acari: Trombiculidae) of the World </ strong>, Zootaxa 3728 (1), pp. 1-173 : 57-60

91. Leptotrombidium bochkovi sp. nov.

( Figs. 13–14 )

Diagnosis. SIF = 7B-B-3-2111.0000; fPp = N/N/BNN; Pc = 3; Gn = 2; fSc: PL> AM = AL; SB-PL; fCx = 1.1.1; fSt = 2.2; fD = 2H-8-6-6-4-2; DS = 27–28; VS = 27–32; NDV = 55–60; Ip = 720–749. Standard measurements are given in Table 6.

Description (larva). IDIOSOMA. Eyes 2 + 2. One pair of humeral setae; 26 dorsal idiosomal setae arranged 8- 6-6-4-2 (7 setae in 1 st row in one specimen); dorsal idiosomal setae sparsely covered with 3 rows of strong squarrose barbs (spiked tripectinala); 4 sternal setae and 27–32 ventral setae; total number of idiosomal setae excluding coxal and sternal 55–60.

GNATHOSOMA. Cheliceral blade with tricuspid cap; cheliceral base moderately covered with puncta; gnathobase with dense puncta and 1 pair of branched setae; palpal femur with few puncta; galeala branched; palpal claw with 3 prongs; setae on palpal femur and genu nude; dorsal palpal tibial seta branched; lateral and ventral palpal tibial setae nude; palpal tarsus with 7 branched setae and tarsala.

SCUTUM. Nearly rectangular, with posterior margin almost straight in centre and sinuous laterally, moderately covered with rather large puncta; AM base posterior to level of ALs; SB at level of PLs (PSB–P-PL = –1–2, mean 0.3); PL> AM = AL; all scutal setae barbed similarly to dorsal idiosomal setae; flagelliform sensilla with about 8– 9 branches in distal half.

LEGS. All 7-segmented, with pair of claws and claw-like empodium. Leg I: coxa with 1 non-specialized branched seta (1B); trochanter 1B; basifemur 1B; telofemur 5B; genu 4B, 2 genualae, microgenuala; tibia 8B, 2 tibialae, microtibiala; tarsus 22B, tarsala (21–22 long), microtarsala distal of tarsala, subterminala, parasubterminala, pretarsala. Leg II: coxa 1B; trochanter 1B; basifemur 2B; telofemur 4B; genu 3B, genuala; tibia 6B, 2 tibialae; tarsus 16B, tarsala (16–17 long), microtarsala near and slightly proximal of tarsala, pretarsala. Leg III: coxa 1B; trochanter 1B; basifemur 2B; telofemur 3B; genu 3B, genuala; tibia 6B, tibiala; tarsus 15B.

Hosts. Hylomys megalotis Jenkins and Robinson, 2002 ( Erinaceomorpha : Erinaceidae ) and Laonastes aenigmamus Jenkins, Kilpatrick, Robinson and Timmins, 2005 ( Rodentia : Diatomyidae ).

Type material. Holotype larva (L-316, T-Tr.-60) ex Hylomys megalotis , LAOS: Khammouane Province, 18 km N from Thakhek, Ban Doy village, 140 m a.s.l., 9 November 2008, coll. A. V. Abramov and A.N. Tikhonov, mites collected by A. V. Bochkov. 25 paratypes larvae (Nos. L-230 to L-353) ex Hylomys megalotis and Laonastes aenigmamus , 9, 11, and 16 November 2008, other data same. Holotype and paratypes are deposited in ZIN.

Etymology. The species is named in honor of Dr. Andre Bochkov (ZIN), who collected the mites from their hosts.

Remarks. The new species is similar to L. kawamurai in the shape of scutum and scutal setae, but differs in a lower number of dorsal idiosomal setae (fD = 2H-8-6-6-4-2 vs. 2H-8-6-8-6-4-2, DS = 27–28 vs. 36, NDV = 55–60 vs. 64–76) and in longer legs (Ip = 720–749 vs. 640).

Species group silvaticum

Diagnosis. fPp = N/N/BNN; Pc = 3; Gn = 2; fSc: PL> AM> AL; SB-PL or SB/PL, rarely PL/SB; fCx = 1.1.1; fSt = 2.2; fD = 2H-8-6(8)-6-6-4(6)-…; DS = 30–39; VS = 22–39; NDV = 52–74; Ip = 710–890; AW 66–79, PW 72– 92, SB 30–38, ASB 23–35, PSB 14–18, SD 39–51, AP 20–32, AM 48–65, AL 36–54, PL 51–74, S 63–94, H 54– 72, D min 34–53, D max 50–72, V min 22–40, V max 45–60, pa 232–307, pm 222–274, pp 244–309. Corners of posterior scutal margin rounded. Philippines, China (Fujian Province, Xizang Autonomous Region), India, South Korea, Japan, Pakistan, Iran, and Ukraine.

Figures

FIGURE 13. Leptotrombidium bochkovi sp. nov. A, scutum and eyes; B, dorsal idiosomal seta of 1st row; C, preanal ventral idiosomal seta; D, arrangement of dorsal idiosomal setae; E, arrangement of ventral idiosomal setae. Scale bars: 50 µm (A), 20 µm (B, C), 100 µm (D, E).

FIGURE 14. Leptotrombidium bochkovi sp. nov. A, dorsal aspect of gnathosoma (holotype); B, ventral aspect of gnathosoma (holotype); C, palpal tibia of a specimen with clearly trifurcate palpal claw, dorsal aspect; D, leg I; E, leg II; F, leg III. Scale bars: 25 µm (A–C), 50 µm (D–F).