Trisetica knighti, comb. n.
Creators: name: Stekolnikov, Alexandr A.
name: Quetglas, Juan
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Trombiculidae
Trisetica
Trisetica knighti

description: Trisetica knighti (Radford, 1954) comb. n.
Figs 2–8
Trombicula knighti – Radford (1954): 298, fig. 49; Kolebinova (1966): 74, figs 1–5.
Trombicula (Anomalaspis) knighti
– Vercammen-Grandjean and Nadchatram (1963): 385.
Sasatrombicula (Rudnicula) knighti
– Vercammen-Grandjean (1965): 68.
Rudnicula knighti – Brown et al. (1988): 17.
Sasatrombicula (Rudnicula) balcanica
– Kolebinova (1966): 74, figs 6–11, syn. n.;
Kolebinova (1992): 69, fig. 36.
Rudnicula balcanica – Brown et al. (1988): 17.
H o l o t y p e d e p o s i t i o n: National Museum of Natural History, Washington, DC, USA (Radford 1954, Goff 1989).
D i a g n o s i s: SIF = 4B-N(b)-3(4)-3111.0000; fsp = 7.7.7; fCx = 1.1.1; fSt = 2.2; fPp = B/B/NNB; fSc: AM ≥ PL> AL; Ip = 817–952; fD = 2H-10-14(15)-9(11)-8(7)+(5–11); DS = 47–54; VS = 48–62; NDV = 102–109. Standard measurements are given in Table 1. The re-description is based on one paratype from ZIN, one paratype from NHM (1952.7.23.9), and five additional specimens (ZIN 11168–11172).
Re - de s c ri p ti on (la rv a)
Idiosoma Figs 2–4
Eyes 2 + 2. One pair of humeral setae and 45–52 barbed dorsal idiosomal setae; always 10 setae in 1 st row, 14 (15 in one additional specimen) setae in 2 nd row, 11 (in two additional specimens) or 9 (in one paratype and two additional specimens) setae in 3 rd row, 8 (in two additional specimens) or 7 (in one paratype and two additional specimens) setae in 4 th row, next 5–11 setae with ambiguous distribution by rows; four sternal setae; 48–62 ventral setae; total number of idiosomal setae (NDV), excluding coxal and sternal, 102–109.
Gnathosoma Fig. 5
Cheliceral blade with tricuspid cap; gnathobase sparsely covered with rather large puncta and bears one pair of branched setae; galeal setae nude or having small cilium (in specimen ZIN 11169); palpal claw with 3 visible prongs (4 prongs in specimen ZIN 11168); palpal femoral and genual setae with long branches, dorsal and lateral palpal tibial setae nude, ventral palpal tibial seta branched; palpal tarsus with 4 branched setae and basal tarsala.
A
0
Notes: * – according to Kolebinova (1992); ** – our measurements based on the figures in original descriptions (Kolebinova 1966).
Abbreviations:AW – distance between anterolateral scutal setae; SB – distance between sensillary bases; ASB – distance from the level of sensillary bases to extreme anterior margin of scutum; PSB – distance from the level of sensillary bases to extreme posterior margin of scutum; SD – length of scutum (ASB + PSB); AM – length of anteromedian scutal seta;AL – length of anterolateral scutal setae; PL – length of posterolateral scutal setae; H – length of humeral setae; D min – length of the shortest dorsal idiosomal seta; D max – length of the longest dorsal idiosomal seta; V min – length of the shortest ventral idiosomal seta; V max – length of the longest ventral idiosomal seta; pa – length of leg I (including coxa); pm – length of leg II (including coxa); pp – length of leg III (including coxa); Ip – sum of leg lengths (pa + pm + pp); DS – number of dorsal idiosomal setae (including humeral); VS – number of ventral idiosomal setae (excluding coxal and sternal); NDV – number of idiosomal setae (DS + VS); TaIIIL – length of leg tarsus III; TaIIIW – width of leg tarsus III.
Scutum Figs 3, 6, 7
Nearly hexagonal, with broadly rounded posterior margin and sparse large puncta; AM at level of ALs; PLs off scutum (peniscutum); anterior scutal angles with ALs tend to reduce; AM ≥ PL> AL; all scutal setae with pointed apices and covered with long barbs; sensilla densely covered with scale-like barbs in proximal half, slightly expanded and covered with large spikes in distal half.
Legs Fig. 8
All legs 7-segmented, with 1 pair of claws and claw-like empodium. Leg I: coxa with 1 non-specialised branched seta (1B); trochanter 1B; basifemur 1B; telofemur 5B; genu 4B, 3 genualae, microgenuala; tibia 8B, 2 tibialae, microtibiala; tarsus 22B, tarsala 20 μm long, microtarsala distal to tarsala, subterminala, parasubterminala, pretarsala. Leg II: coxa 1B; trochanter 1B; basifemur 2B; telofemur 4B; genu 3B, genuala; tibia 6B, 2 tibialae; tarsus 16B, tarsala 24 μm long, microtarsala proximal to tarsala, pretarsala. Leg III: coxa 1B; trochanter 1B; basifemur 2B; telofemur 3B; genu 3B, very long genuala; tibia 6B, very long tibiala; tarsus 16B.
description: Published as part of Stekolnikov, Alexandr A. & Quetglas, Juan, 2019, Bat-infesting chiggers (Acariformes: Trombiculidae) of the Balearic Islands and new data on the genus Trisetica Traub et Evans, 1950, pp. 1-10 in Folia Parasitologica (017) (017) 66 on pages 2-5, DOI: 10.14411/fp.2019.017, http://zenodo.org/record/8178885