Mikrus ugandensis Wesolowska, 2001 Wesolowska 2001

Mikrus ugandensis Wesołowska, 2001 Fig. 46 Mikrus ugandensis Wesołowska, 2001: 586, figs 1–7. Diagnosis of female The shape of body and colouration as in male; two pairs of round white spots on abdomen. The female may be distinguished by the strongly sclerotized of posterior part of epigyne (Fig. 46B), and the arrangement of copulatory ducts that are parallel to posterior rim of epigyne in their initial part. Material examined UGANDA • 1 ♂; Mt Elgon, Mbale, Bublo; Eucalyptys; 28 Jul. 2015; K. Vanderhaegen leg.; MRAC 245 141 • 1 ♂, 1 ♀; same locality as for preceding; Grevillea; 28 Jul. 2015; MRAC 245 190 • 1 ♂; Entebbe, Botanic Gardens; 0°04′ N, 32°28′ E; in long grass; 12 May 1991; A. Russell-Smith leg.; MRAC 211 430 • 1 ♂, 4 ♀♀; Kampala, Namulonge Research Station; 0°34′ N, 34°50′ E; grass; 12 Oct. 1987; A. Russell-Smith leg.; MRAC 236 126. Redescription Description of male in Wesołowska (2001). General appearance in Fig. 46A. Characteristic white scales on palpal tibia. Female MEASUREMENTS. Cephalothorax length 1.2, width 1.0, height 0.4. Eye field length 0.5, anterior and posterior width 0.6. Abdomen length 1.5, width 1.2. Tiny spider. CARAPACE. Dark brown with black eye field, bearing translucent hairs. Mouthparts and sternum brown. ABDOMEN. Rounded, dark grey, clothed in greyish hairs, with two pairs of round light spots composed of white scales. Dorsum of abdomen clothed in brown hairs. Spinnerets grey. LEGS. Light brown with darker hairs. EPIGYNE. Strongly sclerotized (Fig. 46B–C). Copulatory openings placed laterally, near posterior border; copulatory ducts short, parallel to epigynal border, further directed anteriorly; spermathecae big, globular, thick-walled (Fig. 46D). Distribution Known from Kenya and Uganda. Remarks The female of this species is described here for the first time. Remarks Only one female is available, whose features show close relationship to other thiratoscirtines. However, due to the unusual dentition of chelicerae, we decided to create a new genus for it. This will need confirmation in the future, when males are discovered. The dentition of chelicerae does not reflect all relationships within the Salticidae, but remains a good diagnostic feature for some taxa.

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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.13752561
Primary Topic
Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
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article
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article

Mikrus ugandensis Wesolowska, 2001 Wesolowska 2001

Zenodo (CERN European Organization for Nuclear Research)
Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
article

Mikrus ugandensis Wesolowska, 2001 Wesolowska 2001

article en

Abstract

Mikrus ugandensis Wesołowska, 2001 Fig. 46 Mikrus ugandensis Wesołowska, 2001: 586, figs 1–7. Diagnosis of female The shape of body and colouration as in male; two pairs of round white spots on abdomen. The female may be distinguished by the strongly sclerotized of posterior part of epigyne (Fig. 46B), and the arrangement of copulatory ducts that are parallel to posterior rim of epigyne in their initial part. Material examined UGANDA • 1 ♂; Mt Elgon, Mbale, Bublo; Eucalyptys; 28 Jul. 2015; K. Vanderhaegen leg.; MRAC 245 141 • 1 ♂, 1 ♀; same locality as for preceding; Grevillea; 28 Jul. 2015; MRAC 245 190 • 1 ♂; Entebbe, Botanic Gardens; 0°04′ N, 32°28′ E; in long grass; 12 May 1991; A. Russell-Smith leg.; MRAC 211 430 • 1 ♂, 4 ♀♀; Kampala, Namulonge Research Station; 0°34′ N, 34°50′ E; grass; 12 Oct. 1987; A. Russell-Smith leg.; MRAC 236 126. Redescription Description of male in Wesołowska (2001). General appearance in Fig. 46A. Characteristic white scales on palpal tibia. Female MEASUREMENTS. Cephalothorax length 1.2, width 1.0, height 0.4. Eye field length 0.5, anterior and posterior width 0.6. Abdomen length 1.5, width 1.2. Tiny spider. CARAPACE. Dark brown with black eye field, bearing translucent hairs. Mouthparts and sternum brown. ABDOMEN. Rounded, dark grey, clothed in greyish hairs, with two pairs of round light spots composed of white scales. Dorsum of abdomen clothed in brown hairs. Spinnerets grey. LEGS. Light brown with darker hairs. EPIGYNE. Strongly sclerotized (Fig. 46B–C). Copulatory openings placed laterally, near posterior border; copulatory ducts short, parallel to epigynal border, further directed anteriorly; spermathecae big, globular, thick-walled (Fig. 46D). Distribution Known from Kenya and Uganda. Remarks The female of this species is described here for the first time. Remarks Only one female is available, whose features show close relationship to other thiratoscirtines. However, due to the unusual dentition of chelicerae, we decided to create a new genus for it. This will need confirmation in the future, when males are discovered. The dentition of chelicerae does not reflect all relationships within the Salticidae, but remains a good diagnostic feature for some taxa.

Zenodo (CERN European Organization for Nuclear Research)
Evolutionary Genomics (United States) (US)
Openalex Percentile: Top 50%
Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
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