Australosagola rugicornis Choi & Chandler & Park 2025, comb. nov.

Australosagola rugicornis (Oke, 1932) comb. nov. Figs 1 C, 2 B, 4, 13 Sagola rugicornis Oke, 1932: 149, fig. 3. Type locality: Warburton, Mt. Donna Buang, Victoria. Holotype male (MVMA). Chandler 2001: 52, figs 32, 196, both A. tasmaniae. Type material. Holotype. Australia: Victoria: • ♂ (MVMA), “ WARBURTON, Vic. / 18.2.81 / C. OKE. 4088 ’ // 1081 Type ♂ // MUS. VIC. ENTO 2015-1 L ”. Other material examined (n = 23; 9 ♂♂, 14 ♀♀). See Suppl. material 1. Diagnosis. Adult specimens of A. rugicornis comb. nov. can be separated from other species in Australosagola by the distinct form of antennomeres with antennomeres 4–8 being strongly constricted at their middle (Fig. 4 A, B, G). Male description. Length 2.8–3.3 mm. Body reddish-brown. Head. Head in dorsal view with large impression at base of frontal rostrum around frontal fovea. Vertexal foveae well-developed (Fig. 4 C, H). Antennomere 1 subconical and longer than wide, slightly curved; 2 rounded and transverse; 3 smallest and subconical, slightly constricted at middle; 4–8 distinctly constricted at middle and as long as wide; 9 and 10 distinctly constricted at middle and transverse (Fig. 4 A, G). Thorax. Prothorax slightly broader than long, widest at midpoint (Fig. 4 I). Elytra with two subbasal elytral foveae, three basal elytral foveae (1 being fovea at base of sutural stria), discal elytral foveae with short discal striae, and fovea in sutural striae. Hind wings fully developed. Metatrochanter with angulate ventral margin (Fig. 4 E, J). Abdomen. Abdominal sternites 4 and 5 (VI – VII) both strongly impressed medially (Fig. 4 E). Abdominal sternite 5 (VII) with large lateral preapical and apical rows of setae at middle (Fig. 4 E, K). Genitalia. Length 0.57 mm, aedeagus symmetrical, with pair of long dentate projections near midpoint of median lobe, projections curved medially at apices in basoventral view (Fig. 4 M) and acutely pointed in lateral view (Fig. 4 N). Projections at basal part of median lobe strongly curved apically (Fig. 4 L, M). Female sexual characters. Antennomere 1 stout, subconical and longer than wide; 2 transverse and subquadrate; 3 smallest, subconical and slightly transverse; 4 and 5 distinctly constricted at middle and as long as wide; 6–9 distinctly constricted at middle and transverse; 10 slightly constricted at middle and transverse (Fig. 4 B). Metatrochanter with ventral margin convex (Fig. 4 F). Abdominal sternites 4 and 5 (VI – VII) convex, lacking thick setae at apex of abdominal sternite 5 (VII; Fig. 4 F). Comments. The aedeagi of A. rugicornis and A. tasmaniae comb. nov. are similar, but the aedeagus of A. rugicornis is notably larger (length of A. tasmaniae aedeagus 0.37 mm, for A. rugicornis it is 0.57 mm) (Figs 3 O – Q, 4 L – N), and the projections from the midpoint of the median lobe are longer and differently formed for A. tasmaniae (Figs 3 P (white arrow), Q (white arrow), 4 M, N). The temples of A. tasmaniae are rounded, whereas those of A. rugicornis are angular (Figs 3 I, 4 H). Additionally, the setal cluster on abdominal sternite 5 (VII) is medially open in A. rugicornis, whereas it is complete in A. tasmaniae (Figs 3 N, 4 K). Distribution. Victoria and New South Wales (Fig. 13, red triangles). Habitat. Specimens of this species were collected using flight intercept traps (F. I. T.), by sifting leaf, log, and forest floor litter, and found in debris under a rock in Eucalyptus forests, or by spraying pyrethrin on Eucalyptus logs. Taken primarily in Nothofagus cunninghami and Eucalyptus regnans wet sclerophyll forests.

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Zenodo (CERN European Organization for Nuclear Research)
Published
2025-07-15
DOI
https://doi.org/10.5281/zenodo.15930422
Primary Topic
Diatoms and Algae Research
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article

Australosagola rugicornis Choi & Chandler & Park 2025, comb. nov.

Zenodo (CERN European Organization for Nuclear Research)
Diatoms and Algae Research
article

Australosagola rugicornis Choi & Chandler & Park 2025, comb. nov.

article en

Abstract

Australosagola rugicornis (Oke, 1932) comb. nov. Figs 1 C, 2 B, 4, 13 Sagola rugicornis Oke, 1932: 149, fig. 3. Type locality: Warburton, Mt. Donna Buang, Victoria. Holotype male (MVMA). Chandler 2001: 52, figs 32, 196, both A. tasmaniae. Type material. Holotype. Australia: Victoria: • ♂ (MVMA), “ WARBURTON, Vic. / 18.2.81 / C. OKE. 4088 ’ // 1081 Type ♂ // MUS. VIC. ENTO 2015-1 L ”. Other material examined (n = 23; 9 ♂♂, 14 ♀♀). See Suppl. material 1. Diagnosis. Adult specimens of A. rugicornis comb. nov. can be separated from other species in Australosagola by the distinct form of antennomeres with antennomeres 4–8 being strongly constricted at their middle (Fig. 4 A, B, G). Male description. Length 2.8–3.3 mm. Body reddish-brown. Head. Head in dorsal view with large impression at base of frontal rostrum around frontal fovea. Vertexal foveae well-developed (Fig. 4 C, H). Antennomere 1 subconical and longer than wide, slightly curved; 2 rounded and transverse; 3 smallest and subconical, slightly constricted at middle; 4–8 distinctly constricted at middle and as long as wide; 9 and 10 distinctly constricted at middle and transverse (Fig. 4 A, G). Thorax. Prothorax slightly broader than long, widest at midpoint (Fig. 4 I). Elytra with two subbasal elytral foveae, three basal elytral foveae (1 being fovea at base of sutural stria), discal elytral foveae with short discal striae, and fovea in sutural striae. Hind wings fully developed. Metatrochanter with angulate ventral margin (Fig. 4 E, J). Abdomen. Abdominal sternites 4 and 5 (VI – VII) both strongly impressed medially (Fig. 4 E). Abdominal sternite 5 (VII) with large lateral preapical and apical rows of setae at middle (Fig. 4 E, K). Genitalia. Length 0.57 mm, aedeagus symmetrical, with pair of long dentate projections near midpoint of median lobe, projections curved medially at apices in basoventral view (Fig. 4 M) and acutely pointed in lateral view (Fig. 4 N). Projections at basal part of median lobe strongly curved apically (Fig. 4 L, M). Female sexual characters. Antennomere 1 stout, subconical and longer than wide; 2 transverse and subquadrate; 3 smallest, subconical and slightly transverse; 4 and 5 distinctly constricted at middle and as long as wide; 6–9 distinctly constricted at middle and transverse; 10 slightly constricted at middle and transverse (Fig. 4 B). Metatrochanter with ventral margin convex (Fig. 4 F). Abdominal sternites 4 and 5 (VI – VII) convex, lacking thick setae at apex of abdominal sternite 5 (VII; Fig. 4 F). Comments. The aedeagi of A. rugicornis and A. tasmaniae comb. nov. are similar, but the aedeagus of A. rugicornis is notably larger (length of A. tasmaniae aedeagus 0.37 mm, for A. rugicornis it is 0.57 mm) (Figs 3 O – Q, 4 L – N), and the projections from the midpoint of the median lobe are longer and differently formed for A. tasmaniae (Figs 3 P (white arrow), Q (white arrow), 4 M, N). The temples of A. tasmaniae are rounded, whereas those of A. rugicornis are angular (Figs 3 I, 4 H). Additionally, the setal cluster on abdominal sternite 5 (VII) is medially open in A. rugicornis, whereas it is complete in A. tasmaniae (Figs 3 N, 4 K). Distribution. Victoria and New South Wales (Fig. 13, red triangles). Habitat. Specimens of this species were collected using flight intercept traps (F. I. T.), by sifting leaf, log, and forest floor litter, and found in debris under a rock in Eucalyptus forests, or by spraying pyrethrin on Eucalyptus logs. Taken primarily in Nothofagus cunninghami and Eucalyptus regnans wet sclerophyll forests.

Zenodo (CERN European Organization for Nuclear Research)
University of New Hampshire (US), Chungbuk National University (KR)
Openalex Percentile: Top 69%
Diatoms and Algae Research
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