Guimaraesiella (Guimaraesiella) sphagmotica Gustafsson & Bush 2022, new species
Creators: name: Gustafsson, Daniel R.
name: Bush, Sarah E.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Guimaraesiella
Guimaraesiella sphagmotica

description: Guimaraesiella (Guimaraesiella) sphagmotica Gustafsson & Bush, new species
(Figs 83–84, 87, 89, 95–97)
Type host. Coracina caeruleogrisea strenua (Schlegel, 1871) – stout-billed cuckooshrike.
Type locality. Mount Bosavi, Southern Highlands Province, Papua New Guinea.
Other host. Coracina caeruleogrisea adamsoni Mayr & Rand, 1936 – stout-billed cuckooshrike.
Diagnosis. Head shape indicates that the closest relative of Gu. sphagmotica new species is Gu. nouankaoensis new species, as this differs from all known species of the “core group” of Guimaraesiella, except Guimaraesiella amsel (Eichler, 1951) and Guimaraesiella haftorni (Balát, 1958). In both Gu. amsel and Gu. haftorni the dorsal preantennal suture reaches the ads, which is not the case in Gu. sphagmotica and Gu. nouankaoensis.
Guimaraesiella sphagmotica can be separated from Gu, nouankaoensis by the following characters: frons more angular and lateral margins of preantennal head straight in Gu. sphagmotica (Fig. 87), but frons more rounded and lateral margins of preantennal head convex in Gu. nouankaoensis (Fig. 88); ps present on abdominal segment III in both sexes in Gu. sphagmotica (Figs 83–84), but absent in Gu. nouankaoensis (Figs 85–86); female subgenital plate more angular in Gu. sphagmotica (Fig. 89) than in Gu. nouankaoensis (Fig. 90); proximal mesosome, ventral sclerite of mesosome, and gonopore all differ in shape between the two species (Figs 96, 99); parameres longer in Gu. sphagmotica (Fig. 97) than in Gu. nouankaoensis (Fig. 100).
Description. Both sexes. Head broad, flat dome-shaped (Fig. 87), lateral margins of preantennal area more or less straight, frons slightly rounded to flattened. Marginal carina broad, narrowing conspicuously near dsms, interrupted submedianly. Dorsal preantennal suture reaches dsms but not ads or lateral head margin, and does not separate dorsal anterior plate posteriorly. Ventral anterior plate crescent-shaped. Head chaetotaxy as in Fig. 87. Preantennal nodi very large, bulging. Preocular nodi larger than postocular nodi. Marginal temporal carina slender, of more or less even width. Gular plate with concave lateral margins converging into median point. Thoracic and abdominal segments as in Figs 83–84; ps present on abdominal segment III in both sexes. All examined specimens stained prior to mounting, and true pigmentation unknown.
Male. Thoracic and abdominal chaetotaxy as in Fig. 83. Basal apodeme with rounded proximal end, and concave lateral margins (Fig. 95). Proximal mesosome rounded trapezoidal, with concave anterior margin (Fig. 96). Mesosomal lobes convex, convergent. Ventral sclerite as in Fig. 96, with deep median concavity on distal margin. Gonopore somewhat elongated, with rugged proximal margin. Parameres and pst1–2 as in Figs 95, 97. Measurements as in Table 1.
Female. Thoracic and abdominal chaetotaxy as in Fig. 84. Subgenital plate angular, broad distally, with broad lateral submarginal bulges (Fig. 89). Vulval margin gently rounded, with 2 short, slender vms and 1–2 short, thornlike vss on each side; 4–6 short, slender vos on each side of subgenital plate; distal 1 vos median to vss. Measurements as in Table 1.
Etymology. The species epithet is derived from “ sphagmos ”, Greek for “pulse”, referring to the rather regularly undulating median margin of the marginal carina.
Type material. Ex Coracina caeruleogrisea strenua: Holotype ♂, Mt. Bosavi, Southern Highlands Province, Papua New Guinea, 16 May 1973, 103199 (NHML). Paratypes: 4♂, 5♀, same data as holotype (NHML).
Additional material examined (non-types): Ex Coracina caeruleogrisea adamsoni: 7♂, 4♀, 10 km W of Bulolo, elev. 780 m, Morobe Province, Papua New Guinea, 19 Aug. 1967, A.C. Ziegler, BBM-NG-54058 (BPBM); 1♂, 3♀, 6 km NW of Wau, elev. 1070 m, Morobe Province, Papua New Guinea, 12 Sep. 1967, A.B. Mirza, BBM-NG-54489 (BPBM); 2♀, Wakata Ridge, elev. 5000 ft., Wau, Morobe Province, Papua New Guinea, 8 May 1963, P.J. Shanahan, BBM-NG-27783 (BPBM); 2♀, Wau Creek, elev. 3800 ft., Morobe Province, Papua New Guinea, 11 Mar. 1963, H. Clissold, BBM-NG-20397 (BPBM).
Remarks. Specimens from the type host are larger in all measurements than specimens from C. c. adamsoni. Otherwise, specimens from the two host subspecies are similar but, since most specimens from C. c. adamsoni are poorly preserved, examination of fresh specimens is needed to confirm that the same species of Guimaraesiella occurs on both host subspecies.
description: Published as part of Gustafsson, Daniel R. & Bush, Sarah E., 2022, Chewing lice of the Brueelia-complex (Phthiraptera: Ischnocera) parasitic on members of the Campephagidae (Aves: Passeriformes), with description of a new subgenus and 14 new species, pp. 1-55 in Zootaxa 5165 (1) on page 37, DOI: 10.11646/zootaxa.5165.1.1, http://zenodo.org/record/6825547