Leptotrombidium laoense STEKOLNIKOV 2013, sp. nov.
Creators: name: STEKOLNIKOV, ALEXANDR A.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Actinedida
Trombiculidae
Leptotrombidium
Leptotrombidium laoense

description: 200. Leptotrombidium laoense sp. nov.    
(Figs. 15–16)  
 Diagnosis. SIF = 7B-B-2-2111.0000; fPp = N/N/BNN(b); Pc = 2; Gn = 2; fSc: PL> AM> AL; PL/SB; fCx = 1.1.1; fSt = 2.2; fD = 2H-10-8-6-4; DS = 29–30; VS = 25–26; NDV = 54–56; Ip = 668–675. Standard measurements of holotype and paratype (in parentheses): AW 65 (64), PW 71 (70), SB 33(32), ASB 26 (26), PSB 14 (14), SD 40(40), P-PL 20(20), AP 18 (17), AM 41 (42), AL 32(31), PL 44 (45), S 54(59), H 47(50), D min 41(43), D max 58(58), V min 29(29), V max 49(50), pa 230(223), pm 200(202), pp 245(243), Ip 675(668), DS 29(30), VS 25(26), NDV 54 (56), TaIII 56(56), TaW 14(16).   
 Description (larva). IDIOSOMA. Eyes 2 + 2. One pair of humeral setae; 27–28 dorsal idiosomal setae arranged 10-8-6-4 (in holotype, 10-7-6-4); dorsal idiosomal setae covered with 4 rows of moderate barbs (barbed tetrapectinala); 4 sternal setae and 25–26 ventral setae; total number of idiosomal setae excluding coxal and sternal 54–56.   
GNATHOSOMA. Cheliceral blade with tricuspid cap; cheliceral base densely covered with puncta; gnathobase with dense puncta and 1 pair of branched setae; palpal femur with dense puncta; galeala with few branches; palpal claw with 2 prongs; setae on palpal femur and genu nude; dorsal palpal tibial seta branched; lateral palpal tibial seta nude; ventral palpal tibial seta nude or having 1 branch; palpal tarsus with 7 branched setae and tarsala.  
SCUTUM. Nearly rectangular, with posterior margin straight in centre and rounded laterally, densely covered with small puncta; AM base posterior to level of ALs; SB clearly posterior to level of PLs (PSB–P-PL = –6); PL> AM> AL; all scutal setae barbed similarly to dorsal idiosomal setae, except AL having somewhat longer barbs; sensilla flagelliform and nude.  
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 7–8B, 2 tibialae, microtibiala; tarsus 22B, tarsala (20 long), microtarsala proximal 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 (14 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.  
 Host. Laonastes aenigmamus Jenkins, Kilpatrick, Robinson and Timmins, 2005 (Rodentia: Diatomyidae).   
 Type material. Holotype (L-30, T-Tr.-61) and one paratype larva (L-151) ex Laonastes aenigmamus, LAOS: Khammouane Province, 18 km N from Thakhek, Ban Doy village, 140 m a.s.l., 12 November 2008, coll. A. V. Abramov and A.N. Tikhonov, mites collected by A. V. Bochkov. Holotype and paratype are deposited in ZIN.   
 Etymology. Species name refers to the Lao People’s Democratic Republic where the type locality is situated.   
 Remarks. Within the Leptotrombidium species having fD = 2H-10-8-6-4-…, L. laoense is most similar to L. peromysci and differs from it in the palpal claw with 2 (vs. 3) prongs, galeala with few branches vs. heavily branched, f 1 situated proximal of S 1 vs. distal, nude sensilla vs. heavily branched, shorter legs (Ip = 668–675 vs. 698–720), and in somewhat shorter setae (AM = 41–42 vs. 50–54, PL = 44–45 vs. 54–62, H = 47–50 vs. 52–58).
description: Published as part of STEKOLNIKOV, ALEXANDR A., 2013,   Leptotrombidium  (Acari: Trombiculidae) of the World , pp. 1-173 in Zootaxa 3728 (1) on pages 90-92, DOI: 10.11646/zootaxa.3728.1.1, http://zenodo.org/record/5267733