Siculobata (Paraleius) trinidadensis, Ermilov & OConnor, 2020
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publication ID |
https://doi.org/ 10.17109/AZH.66.4.329.2020 |
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persistent identifier |
https://treatment.plazi.org/id/0F270749-FFF0-FFE2-FEC6-FF221E6DFB69 |
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treatment provided by |
Felipe |
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scientific name |
Siculobata (Paraleius) trinidadensis |
| status |
sp. nov. |
Siculobata (Paraleius) trinidadensis View in CoL sp. n.
( Figs 5–8 View Fig View Fig View Fig View Fig )
Diagnosis. Body size: 298–315 × 166–182. Rostrum pointed. Prolamella, sublamella and lateral keel-shaped ridge present. Rostral, lamellar, interlamellar and exobothridial setae comparatively long, setiform, barbed. Bothridial seta fusiform, barbed. Notogastral seta short, setiform, with attenuate tip, roughened. Epimeral and anogenital setae short, setiform, slightly barbed. Pedotectum II absent. Circumpedal carina of medium size. Leg pretarsi I, II with one modified (specifically curved) claw, leg pretarsi III, IV normal, not modified.
Description. Measurements. Body length: 298 (holotype, female), 298, 315 (two paratypes, one male and one female); notogaster width: 166 (holotype), 166, 182 (two paratypes).
Integument. Body color light brown. Surface microfoveolate (visible only under high magnification in dissected specimens). Humeral region of notogaster slightly microtuberculate. Region between lamella and sublamella slightly striate.
Prodorsum ( Figs 5A View Fig , С; 8A–C). Rostrum distinctly protruding, triangular, pointed. Lamella as long as half of prodorsum (measured in lateral view). Prolamella complete, thin, often poorly visible in mediodistal part. Sublamella present. Sublamellar porose area rounded (4) or oval (4 × 2). Lateral keel-shaped ridge developed. Rostral (45–49), lamellar (53–61), interlamellar (65–73) and exobothridial (28–36) setae setiform, barbed. Bothridial seta (45–49) fusiform, with long, roughened stalk and shorter, barbed, clearly pointed apically head. Dorsosejugal porose area not observed.
50 Μm (A), 20 Μm (B, D), 10 Μm (C)
Notogaster ( Figs 5A, C View Fig ; 6A View Fig ). Anterior notogastral margin distinctly convex medially. Ten pairs of notogastral setae (14–16) setiform, with attenuate tip, roughened. Four pairs of sacculi with small opening and slightly elongate chamber. Distance S1–S1 little shorter than S2–S2. Notogastral lyrifissure (ia, im, ip, ih, ips), opisthonotal gland opening and circumgastric sigillar band distinct. Circumgastric scissure present, no often slightly visible.
Gnathosoma ( Figs 6B–D View Fig ). Subcapitulum longer than wide (65–69 × 53–57). Subcapitular (a, 12–14; m, 10–12; h, 16–20) and adoral (6) setae setiform, barbed. Palp (length 45–49) and genu of leg III, right, paraxial view; D = leg IV, right, paraxial view. Scale bar 20 Μm with typical setation 0-2-1-3-9(+ω). Postpalpal seta (6) spiniform. Chelicera (length 73–77) with two setiform, barbed setae (cha, 24–28; chb, 14–16). Trägårdh’s organ elongate triangular.
Epimeral and lateral podosomal regions ( Figs 5B, C View Fig ; 8D View Fig ). With typical epimeral setal formula: 3-1-3-3. Epimeral setae (1b, 1c, 3b, 18–20; 1a, 2a, 3a, 3 С, 4a, 4b, 4c, 14–16) setiform, slightly barbed, 1a, 2a, 3a thicker and more barbed. Pedotectum I represented by small lamina, pedotectum II not developed. Discidium distinct, rounded. Humeral porose area Ah represented by saccule, Am absent. Circumpedal carina of medium size, directed to discidium.
Anogenital region ( Figs 5B, C View Fig ; 6A View Fig ). Four pairs of genital (8), one pair of aggenital (8–10), two pairs of anal (14–16) and three pairs of adanal (14–16) setae setiform, thin, roughened. Adanal lyrifissure distinct. Adanal seta ad
1
posterior, ad
2
lateral, ad
3
anterior to anal aperture. Marginal porose area poorly visible, complete, band-like, very thin. Preanal organ of typical, goblet-like form. Ovipositor elongated (98 × 28), blade (45) shorter than length of distal section (beyond middle fold; 53). Each of the three blades with four smooth setae, ψ 1 ≈ τ 1 (32) setiform, ψ 2 ≈ τ a ≈ τ b ≈ τ c (14) thorn-like. Six coronal setae (2) spiniform.
Leg ( Figs 7A–D View Fig ; 8E, F View Fig ). Monodactylous. Claw of pretarsi I, II modified, specifically curved, sparsely barbed on dorsal side. Claw of pretarsi III, IV evenly, semi-oval, curved (not modified), sparsely barbed on dorsal side. Dorsoparaxial porose area on all femora and on trochanters III, IV present. Ventroproximal porose area on all tarsi and ventrodistal porose area on all tibiae not observed. Formulas of leg setation and solenidia: I (1-5-3-4-18) [1-2-2], II (1-5-2-4-15) [1-1-2], III (2-3-1-3-15) [1-1-0], IV (1-2-2-3-12) [0-1-0]; homology of setae and solenidia indicated in Table 1. Famulus of tarsus I short, straight, slightly swollen distally, located between solenidion ω 2 and seta ft”. Solenidion ω 1 on tarsus I, ω 1 and ω 2 on tarsus II bacilliform, other solenidia setiform.
Material examined. Holotype (female) and two paratypes (one male and one female): Trinidad, no further locality, active phoresy on a specimen of Pantophthalmus heydeni ( Diptera , Pantophthalmidae ), 16 June 1956 (collector not known) ( BMOC 75-0530 - 001 ).
Type deposition. The holotype and one paratype are deposited in the collection of the University of Michigan Museum of Zoology, Ann Arbor, MI, USA ; one paratype is deposited in the collection of the Tyumen State University Museum of Zoology , Tyumen, Russia . All specimens are stored in ethanol with a drop of glycerol.
Etymology. The specific name trinidadensis refers to the place of origin, Trinidad.
Remarks. The new species is morphologically similar to Siculobata (Paraleius) americana sp. n. in having one claw on all leg pretarsi and short notogastral setae with attenuate tip, but differs from the latter by the presence of sublamella (versus absent), pointed apically bothridial head (versus rounded) and normal claw (not modified) on leg pretarsi III, IV (versus modified), and the absence of pedotectum II (versus present).
NORTON (1980) noted this species as “ Metaleius sp. D ” (located mostly laterally and ventrally on thorax of P. heydeni) based on specimens from the same host insect specimen provided to him by the junior author.
Like other insects with which S. ( Paraleius ) species are associated, larvae of the dipteran family Pantophthalmidae inhabit galleries in wood ( AUSTEN 1923).
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