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Acanthocyrtus

Handschin, 1925

GBIF:194444124

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Descriptions(1)

Type species: Acanthocyrtus spinosus (Schött, 1917) These characters are shared by all Acanthocyrtus species so are not repeated in the species descriptions following: Tergal mac heavily ciliate apically, strongly or lightly foot-shaped or acuminate; smooth mic apically ramificate or not (Fig. 1). Eyes 8 + 8 (Figs 3 F and 9 D). Four prelabral chaetae smooth (Fig. 3 D); labral formula with 4 (a 1 – 2), 5 (m 0 – 2), 5 (p 0 – 2) smooth chaetae. Labial palp with five main papillae (A – E) plus one hypostomal papilla (H) with 0, 5, 0, 4, 3 (e 6 absent), 2 guard appendages, respectively. Sublobal plate with 4 smooth appendages, 3 inner subquals and 1 minute distally (Fig. 4 B). Labium with 5 proximal chaetae smooth and subequals in length (Fig. 4 C). Basolateral and basomedian labial field with chaetae a 1 – 5 smooth (Fig. 4 C). Th II – Abd V with ms and sens formula 1, 0 | 1, 0, 1, 0, 0 and 2, 2 | 1, 2, 2, +, 3, respectively (Figs 5 and 10); Abd II – IV bothriotrichal formula 2 (a 5, m 2), 3 (a 5, m 2, m 5), 2 (T 2, T 4) (Figs 5 and 10); bothriotricha with accessory lance-shaped chaetae (Fig. 1). Mucro bidentate, apical tooth subequal to proximal tooth, basal spine surpassing the apex of the proximal tooth (Fig. 7 E).

Cipola, Nikolas Gioia, Greenslade, Penelope (2022): Two new species of Acanthocyrtus Handschin, 1925 (Collembola, Entomobryidae Entomobryinae) from Western Australia. Zootaxa 5124 (3): 341-358, DOI: 10.11646/zootaxa.5124.3.4

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AnimaliaArthropodaCollembolaEntomobryomorphaEntomobryidaeAcanthocyrtus

Acanthocyrtus

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Child Taxa(2)

Acanthocyrtus necropolitanusCipola & Greenslade, 2022

species

Acanthocyrtus pallidusCipola & Greenslade, 2022

species

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FIGURE 1. Symbols used in the chaetotaxy descriptions of Acanthocyrtus species.

Imageimage/png© Cipola, Nikolas Gioia;Greenslade, PenelopeCipola, Nikolas Gioia;Greenslade, Penelope

FIGURE 4A–D. Acanthocyrtus necropolitanus sp. nov., ventral head (right side); A, labial papillae E (right side); B, maxillary palp and sublobal plate (right side); C, basomedian and basolateral labial fields and proximal chaetae; D, complete postlabial chaetotaxy.

FIGURE 5A–C. Acanthocyrtus necropolitanus sp. nov., dorsal chaetotaxy (left side); A, Th II–III; B, Abd I–III; C, Abd IV–V.

FIGURE 7A–E. Acanthocyrtus necropolitanus sp. nov., abdominal appendages; A, collophore (lateral view); B, distal manubrium (ventral view); C, manubrial plate (dorsal view), arrow indicates chaeta present or absent; D, dens spines chaetotaxy (dorsal view), E, distal dens and mucro (dorsal view).

FIGURE 9A–F. Acanthocyrtus pallidus sp. nov., antennae and head; A, chaetotaxy (mac and elongated sens) of left Ant III–I (dorsal view, from left to right), respectively; B, chaetotaxy of clypeus (dorsal view); C, labral papillae (ventral view); D, head dorsal chaetotaxy and eyes (dorsal view, left side); E, labial papillae E (ventral view, right side); F, complete postlabial chaetotaxy (ventral view, right side).

FIGURE 10A–C. Acanthocyrtus pallidus sp. nov., dorsal chaetotaxy (left side); A, Th II–III; B, Abd I–III; C, Abd IV–V.

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Descriptions(1)

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Media Files(7)

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