Doloisia (Doloisia)
Creators: name: Antonovskaia, Anastasia A.
name: Stekolnikov, Alexandr A.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Trombiculidae
Doloisia

description: Doloisia (Doloisia) alata Schluger, Grochovskaja, Ngu, Hoe and Tung, 1961
(Figs. 15A, B, 16–18)
Doloisia alata Schluger, Grochovskaja, Ngu, Hoe and Tung, 1961: 448, figs. 1–7.
Doloisia alata: Wen 1984: 302; Li et al. 1997: 333, fig. 2-23-2; Kudryashova 2004: 37.
Doloisia (Doloisia) alata: Vercammen-Grandjean 1968: 97; Chau et al. 2007: 142, fig. 67.
Diagnosis. SIF = 3B1b-N-3-2110.0000; fsp = 7.7.7; fCx = 3.5.10; fSt = 2.2; fPp = B/B/NNB; fSc: PL >> AM> AL; Ip = 688–741; fD = 4H-10-8-6-6-2; DS = 36–40; V = 38–41; NDV = 75–80. Eyes absent. Standard measurements of type series given in Table 6.
Description (larva) [based on lectotype and 4 paralectotypes]. IDIOSOMA (Figs. 15A, B, 16). Eyes absent; 36–40 dorsal idiosomal setae covered with long thin barbs, including two pairs of humeral setae; 4 sternal setae; 38–41 ventral setae; NDV = 75–80.
GNATHOSOMA (Fig. 17A, B). Cheliceral blade with two large hooks; gnathobase with moderate puncta and 1 pair of branched setae; galeala nude; palpal claw with 3 prongs, internal prong long and strongly curved; setae on palpal femur and genu branched; dorsal and lateral palpal tibial setae nude, ventral palpal tibial seta branched; palpal tarsus with 1 small dorsal seta having 1 branch, 3 heavily branched ventral setae, and tarsala.
SCUTUM (Fig. 15A, 17C). Trapezoidal, wider than long, with straight posterior margin, moderately covered with small puncta, with 1 AM covered with short barbs, 1 pair of nude ALs and 1 pair of PLs covered with long thin barbs; AM anterior to level of ALs; PLs much longer AM, ALs shorter AM; sensilla bulbous, covered with spikes; sensillum bases situated at equal distances from levels of ALs and PLs.
LEGS (Fig. 17D–F).All 7-segmented, with 1 pair of claws and claw-like empodium. Leg I: coxa with 3 branched setae (3B); trochanter 1B; basifemur 1B; telofemur 5B; genu 4B, 2 genualae, microgenuala; tibia 8B, 2 tibialae, microtibiala; tarsus 21B, tarsala, microtarsala distal to tarsala, subterminala, parasubterminala, pretarsala. Leg II: coxa 5B; trochanter 1B; basifemur 2B; telofemur 4B; genu 3B, genuala; tibia 6B, 2 tibialae; tarsus 18B, tarsala, microtarsala near and proximal to tarsala, pretarsala. Leg III: coxa 10B; trochanter 1B; basifemur 2B; telofemur 3B; genu 3B, genuala; tibia 6B; tarsus 15B.
Hosts. Leopoldamys edwardsi [= Rattus grochovskii D. Tien (nomen nudum)] (Schluger et al. 1961), Rattus losea (Wen 1984).
Distribution. China (Wen 1984; Li et al. 1997), Vietnam.
Type material examined (Fig. 18). Lectotype (here designated): larva ZMMU Tdt-3174 (specimen 1) ex L. edwardsi No 44 [labeled as “ Rattus sp. n. (Rattus grochovskii)”], Vietnam, Quang Ninh Province, Ha Lam District, Ha Long (= Hon Gai), 6 February 1956, coll. I.M. Grochovskaja. Paralectotypes: four larvae, ZMMU Tdt-3157 (specimen 2), ZMMU Tdt-3171 (specimen 1), ZMMU Tdt-3173 (specimen 2), ZMMU Tdt-3176 (specimen 1), same collection data as for lectotype.
Remarks. According to the original description, D. alata is similar to D. synoti Oudemans, 1910 and differs from it “by the absence of eyes, greater number of dorsal setae, and by other characters” (Schluger et al. 1961). In our opinion, D. alata is more similar to D. hopuensis Hsu and Chen, 1964 than to D. synoti, and differs from it by a slightly lower number of idiosomal setae (fD = 4H-10-8-6-6-2 vs. 4H-12-10-8-6-4-2, DS = 36–40 vs. 46–48) and by longer legs (Ip = 688–741 vs. 546) (Li et al. 1997).
description: Published as part of Antonovskaia, Anastasia A. & Stekolnikov, Alexandr A., 2021, Redescriptions of ten chigger mite species (Acariformes: Trombiculidae) from Vietnam, pp. 1-53 in Zootaxa 4969 (1) on pages 23-27, DOI: 10.11646/zootaxa.4969.1.1, http://zenodo.org/record/4745657