Chrysotus capellarii Soares & Carvalho-Filho, 2023
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publication ID |
https://doi.org/10.12741/ebrAsilis.v16.e1070 |
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publication LSID |
lsid:zoobank.org:pub:F969B111-49F7-4299-8FC0-862953AA8855 |
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DOI |
https://doi.org/10.5281/zenodo.15879523 |
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persistent identifier |
https://treatment.plazi.org/id/243B87FA-303F-FF85-D580-F9D0FC6A079E |
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treatment provided by |
Felipe |
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scientific name |
Chrysotus capellarii Soares & Carvalho-Filho |
| status |
sp. nov. |
Chrysotus capellarii Soares & Carvalho-Filho View in CoL sp. nov.
urn:lsid:zoobank.org:act:277E92B5-09C8-470B-81CB-C83B3FECCF98
( Figure 1 View Figure 1 )
Type examined material. HOLOTYPE ♂ ( Figure 1 View Figure 1 ) labelled as: " COLOMBIA, Córdoba, Paso Nuevo [ca 9°19′35.7"N 76°05′17.2"W] | vegetation at the edge of the beach | sweeping, 22.vi.2023, Y. Ramos- | Pastrana col." "HOLOTYPE | Chrysotus capellarii | Soares & Carvalho-Filho [red label]". Specimen in good condition, not dissected, left IIt 2-5, IIIt 2-5 and right IIIt 3-5 broken off. GoogleMaps
Diagnosis (males). Antenna wholly dark brown ( Figures 1A, B View Figure 1 ). Palpus long and narrow, about 2x longer than eye height, silvery, somewhat translucent and covered with short pubescence, ending in a wide and oval black lamella ( Figures 1A, B View Figure 1 ). Femora I and II yellow with basal 1/2 brownish, femur III yellow with apical 1/2 brownish ( Figures 1A, B View Figure 1 ).
Description of male ( Figure 1 View Figure 1 ). Body length, 1.4 mm. Wing length, 1.4 mm, width, 0.5 mm. Head: Frons rectangular, 1.5x wider than high, dark metallic green, with strong bluishpurple reflections ( Figures 1A, B View Figure 1 ); face dark brown, narrower than anterior ocellus at narrowest point ( Figure 1C View Figure 1 ); antenna wholly dark brown, postpedicel subtriangular, covered with long pale pubescence; arista-like stylus covered with short microtrichia, slightly longer than eye height ( Figures 1B, C View Figure 1 ); proboscis dark brown covered with short pale setae; palpus long and narrow, about 2x longer than eye height, silvery, somewhat translucent and covered with short pubescence, ending in a wide and oval black lamella, about 1/5 as long as the total length of palpus (MSSC) ( Figures 1A, B View Figure 1 ). Thorax: Mesonotum and scutellum mostly metallic green with weak coppery and purple reflections, acrostichals setae short, biseriate, ending at level of the third posterior dorsocentral seta, five pairs of strong dorsocentrals setae increasing in length posteriorly ( Figures 1A, D View Figure 1 ); pleuron dark brown with weak greenish reflections, metepimeron concolor with pleuron ( Figure 1A View Figure 1 ). Wing ( Figure 1F View Figure 1 ): Membrane hyaline, veins pale brown; CuAx: 0.3. Halter yellow, calypter brownish at apex. Legs ( Figures 1A, E View Figure 1 ) I: 56, 54, 25/10/8/6/5. II: 65, 65, 30/15/10/6/5. III: 70, 73, 17/20/?/?/? (all IIIt 3-5 broken off). Legs yellow except all brown coxae, basal 1/2 of femora I and II, apical half of femur III and IIt 3-5 brown, It 2-5 and basal 1/2 of tibia III dark yellow. Chaetotaxy: Setae on coxae black. Femur II with 1-2 anterior preapical seta, with ventral row of short and slender setae from base to basal 1/2, posteroventral row of conspicuous setae from base to apex ( Figure 1E View Figure 1 ). Tibia II with 1 short anterodorsal seta at basal 1.5/6, 1 anterior and 1 ventral conspicuous setae at apex. Femur III with 3 strong anteroventral preapical setae, with ventral row of short and slender setae from base to apical 2/3, 1 long posteroventral preapical seta. Tibia III with 3 short dorsal setae at: 2/6, 4/6 and apex, 1 anteroventral and 1 ventral apical short setae. IIIt 1-2 with ventral row of short and erect setae. Abdomen ( Figure 1A View Figure 1 ). Dark brown with bluish and purple reflections. Hypopygium ( Figure 1G View Figure 1 ): Capsule and cercus brownish, both covered with brownish setae.
Female. Unknown.
Etymology. Named after Dr. Renato Soares Capellari (Instituto Federal de EducaÇÃo, Ciência e Tecnologia de SÃo Paulo-IFSP, Brazil) for his essential contribution to the knowledge of Neotropical Dolichopodidae , including his review of the C. longipalpus species group.
Remarks. The longipalpus species group of Chrysotus presents a wide range of male palpus shapes, including species with a long and homogeneously narrow palpus (i.e., Chrysotus xiphostoma Robinson, 1975 and Chrysotus zumbadoi Capellari, 2015 ), somewhat wide and oval (i.e., C. crosbyi ), wide basally and abruptly narrowing towards apex (i.e., Chrysotus coquitos Capellari, 2015 ; Chrysotus miripalpus Parent, 1928 and Chrysotus pachystoma Capellari, 2015 ). However, C. capellarii sp. nov. presents a unique and apomorphic condition, with the palpus extremely long (about 2x longer than eye height), and largely transparent (palpus opaque in the other species) and with a wide apical lamella (the only known species in the group with this characteristic), besides the femora I and II yellow with basal 1/2 darkened. All these mentioned characters prevent us from establishing any close phyletic relationship of C. capellarii sp. nov. with the other species in the group.
Natural history. The holotype was collected at a height of about 40 cm from the ground on a leaf of a low tree in an herbaceous coastal sand-dune habitat of an Atlantic oceanic beach ( Figures 2A, B View Figure 2 ).
Distribution. The new species is known to occur only in the type locality in Córdoba, Colombia and as mentioned in the introduction, this species has also been collected in Costa Rica, demonstrating a wide distribution across the Atlantic Coast ( Figure 3 View Figure 3 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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