Vicirionessa ignota Wiśniewski & Wesołowska, 2024, sp. nov.

Vicirionessa ignota sp. nov. urn:lsid:zoobank.org:act: 5D002862-7447-4820-B168-717BA9B06968 Fig. 102 Diagnosis The female can be distinguished from its congeners by the form of the epigyne, especially by the middle part of the copulatory ducts, which are highly sclerotized and run mesially. Etymology The specific name is Latin, meaning ‘unknown’ and referring to the fact that the species has remained undiscovered for so long. Material examined Holotype UGANDA • ♀; Masindi distr., Budongo Forest; 1°45′ N, 31°25′ E; dry season; 15–21 Jan. 1997; T. Wagner leg.; ZFMK 2959. Paratypes UGANDA • 1 ♀; same collection data as for holotype; ZFMK 2937 • 2 ♀♀; same collection data as for holotype; ZFMK 2890 • 1 ♀; same locality as for holotype; 21–30 Jul. 1995; ZFMK 3034. Description Male Unknown. Female General appearance as in Fig. 102A. MEASUREMENTS. Cephalothorax length 3.0–3.3, width 2.3–2.6, height 1.5. Eye field length 1.8–2.0, anterior width 2.1–2.3, posterior width 1.9–2.1. Abdomen length 3.1–4.0, width 2.1–2.3. CARAPACE. Moderately high, pear-shaped, widest posteriorly. Anterior median eyes relatively large, their diameter more than twice diameter of anterior laterals. Distance between anterior lateral eyes slightly greater than between posterior laterals. Carapace light brown, eyes with black ring, a pair of black tearshaped spots laterally from fovea. White hairs laterally from eye field, also encircling anterior eyes, long thin transparent bristles on eye field. ABDOMEN. Ovoid, slightly elongated, yellowish white, in some specimens with silver patches formed by translucent guanin crystals (Fig. 102B), venter light. Spinnerets whitish. LEGS. Light brown, long, especially femora and metatarsi. Leg hairs thin, long, colourless, spines brown. EPIGYNE. With large anterior depression (Fig. 102C–E). Inlet part of copulatory ducts very broad, distal part narrow, strongly sclerotized, spermathecae two-chambered (Fig. 102F–G).

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2024-09-04
DOI
https://doi.org/10.5281/zenodo.13784955
Primary Topic
Diatoms and Algae Research
Type
article
Field-Weighted Citation Impact
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article

Vicirionessa ignota Wiśniewski & Wesołowska, 2024, sp. nov.

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

Vicirionessa ignota Wiśniewski & Wesołowska, 2024, sp. nov.

article en

Abstract

Vicirionessa ignota sp. nov. urn:lsid:zoobank.org:act: 5D002862-7447-4820-B168-717BA9B06968 Fig. 102 Diagnosis The female can be distinguished from its congeners by the form of the epigyne, especially by the middle part of the copulatory ducts, which are highly sclerotized and run mesially. Etymology The specific name is Latin, meaning ‘unknown’ and referring to the fact that the species has remained undiscovered for so long. Material examined Holotype UGANDA • ♀; Masindi distr., Budongo Forest; 1°45′ N, 31°25′ E; dry season; 15–21 Jan. 1997; T. Wagner leg.; ZFMK 2959. Paratypes UGANDA • 1 ♀; same collection data as for holotype; ZFMK 2937 • 2 ♀♀; same collection data as for holotype; ZFMK 2890 • 1 ♀; same locality as for holotype; 21–30 Jul. 1995; ZFMK 3034. Description Male Unknown. Female General appearance as in Fig. 102A. MEASUREMENTS. Cephalothorax length 3.0–3.3, width 2.3–2.6, height 1.5. Eye field length 1.8–2.0, anterior width 2.1–2.3, posterior width 1.9–2.1. Abdomen length 3.1–4.0, width 2.1–2.3. CARAPACE. Moderately high, pear-shaped, widest posteriorly. Anterior median eyes relatively large, their diameter more than twice diameter of anterior laterals. Distance between anterior lateral eyes slightly greater than between posterior laterals. Carapace light brown, eyes with black ring, a pair of black tearshaped spots laterally from fovea. White hairs laterally from eye field, also encircling anterior eyes, long thin transparent bristles on eye field. ABDOMEN. Ovoid, slightly elongated, yellowish white, in some specimens with silver patches formed by translucent guanin crystals (Fig. 102B), venter light. Spinnerets whitish. LEGS. Light brown, long, especially femora and metatarsi. Leg hairs thin, long, colourless, spines brown. EPIGYNE. With large anterior depression (Fig. 102C–E). Inlet part of copulatory ducts very broad, distal part narrow, strongly sclerotized, spermathecae two-chambered (Fig. 102F–G).

Zenodo (CERN European Organization for Nuclear Research)
Evolutionary Genomics (United States) (US)
Openalex Percentile: Top 63%
Diatoms and Algae Research
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