Epicypta peterngi Amorim & Oliveira & Balbi & Ang & Torres & Yeo & Srivathsan & Meier 2025, sp. n.
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2025
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| author | Amorim, Dalton De Souza Oliveira, Sarah Siqueira Balbi, Maria Isabel P. A. Ang, Yuchen Torres, Ambrosio Yeo, Darren Srivathsan, Amrita Meier, Rudolf |
| author_facet | Amorim, Dalton De Souza Oliveira, Sarah Siqueira Balbi, Maria Isabel P. A. Ang, Yuchen Torres, Ambrosio Yeo, Darren Srivathsan, Amrita Meier, Rudolf |
| contents | <p><i>Epicypta peterngi</i> Amorim & Oliveira sp. n.</p><p>(Fig. 139A–E)</p><p>https://singapore.biodiversity.online/species/A-Arth-Hexa-Diptera-000794</p><p>urn:lsid:zoobank.org:act: 6F1F1B69-94C1-421B-A172- BA3756255029</p><p><b>Diagnosis</b></p><p>Head ochre-yellowish with large brownish areas, antennal scape, pedicel, and first flagellomere yellowish-brown, remaining flagellomeres light greyish-brown. Scutum dark brown, with ochre-yellowish band at anterior end; scutellum blackish-brown; thoracic pleural sclerites dark greyish-brown. Coxae whitish, hind coxa with a light brown basal tinge, tip of mid and hind femora with a brown mark. Wing membrane light brownish fumose, area along anterior margin on basal half of wing more yellowish. C not extending beyond tip of R 5; M 1+2 about half of r-m length. Dorsal macrotrichia on posterior veins M 1, M 2, and posterior half of M 4, no macrotrichia on anal lobe membrane. Abdominal tergite 1 dark brown, tergites 2–5 greyish-brown medially with a cream-yellow lateral band, larger on tergites 3–4, connecting each other medially on tergite 5, tergites 6–7 greyish-brown. Gonocoxites with a long lateral lobe and a long digitiform dorsal lobe; gonostylus bifid at base, with a short, digitiform internal lobe and a longer outer lobe; aedeagus with a pair of parallel projections distally; paramere with a pair of strong spines on a triangular projection distally; tergite 9 with a pair of long projections slender towards apex.</p><p><i>Epicypta_peterngi _ ZRCBDP 0047888_hapZRCBDP0047888_SMH_holotype</i> [19: A, 149: G, 151: C, 226: C, 229: T, 238: G] cctttcttctactattgcAcatgcaggagcatcagtaga tttagctattttttctcttcatttagcaggaatttcttctattttaggggctattaactttatt acaacaattattaatatacgagctccaggaattacatttgatcgaGtCcctttatttg tttgatctgttttaattactgccgttttattattactatctttaccagtattagcaggggct atCacTatattattGacagatcgaaatttaaatacatcattttttgatccagcagga ggaggagaccctattttatatcaacatttattt</p><p><b>Description</b></p><p>Male. Wing length, 2.56; width, 0.93. Head. Light brownish-yellow medially, ochre-yellowish laterally. Scape and pedicel greyish ochre-yellow, flagellomeres ochre-yellow. Face and clypeus light brownish-yellow, palpomeres 1–3 light brownish-yellow, palpomeres 4–5 lighter, labella whitish-yellow. Occiput with four longer setae dorsally to eye anteriorly to lateral ocellus, two dorsally to ocellus, ten posteriorly to ocellus. Scape about 2.0× pedicel length; flagellomere 4 1.5× longer than wide. Palpomere 4 1.5× palpomere 3 length, palpomere 5 1.9× palpomere 4 length. Thorax. Scutum dark brown, anterior end ochre-yellow, scutellum blackish-brown with ochre-yellow anterolateral corners. Antepronotum, proepisternum, anepisternum, katepisternum, mesepimeron, laterotergite, and metepisternum dark greyish-brown, katepisternum slightly lighter, dark brown. Haltere light ochre-yellowish, no larger setae. Pleural membrane ochre-yellow. Scutum with nine supra-alars and three pairs of prescutellar bristles, two pairs of scutellar bristles and one outer pair of long setae. Proepisternum with three bristles, anepisternum with five bristles along posterior margin. Mesepimeron with two small bristles and 18 small setae, laterotergite with three bristles, one long seta and 18 small setae. Metepisternum with 18 fine setae. Legs. Fore coxa whitish with an orangish tinge, mid and hind coxae whitish, hind coxa with a light brownish tinge at basal end; femora whitish with a light brown tinge, mid and hind femora darker at tip; tibiae and tarsi light brownish-yellow, tibia and each tarsomere with a yellowish tinge at tip. Fore tibia with two lateral bristles medially; mid tibia with 2–3 irregular rows of 4–6 small bristles dorsally, one bristle on inner face medio-distally and three long setae along ventral edge; hind tibiae with two irregular rows of six small bristles dorsally and four longer setae at inner face medio-distally. Fore leg tarsomere 1 as long as tibia, 1.4× tarsomere 2 length. Hind tibial inner spur 4.4× tibia width at apex. Wing (Fig. 139B). Membrane fumose light brown, darker along anterior margin. Sc barely produced. C not produced beyond tip of R 5. R 1 reaching C on distal sixth of wing; R 5 reaching C before level of tip of M 1. First sector of Rs oblique, 0.63× r-m length; r-m oblique. M 1+2 0.61× r-m length; bM 4.6× r-m length; first sector of CuA 0.29× length of second sector of CuA. Cubital pseudovein not produced, CuP extending slightly beyond level of origin of M 4. Anal fold almost reaching wing margin. Posterior veins M 1 and M 2 almost entirely with dorsal macrotrichia, M 4 with macrotrichia on distal half, CuA with macrotrichia on distal fourth of wing; a few macrotrichia on anal lobe membrane. Abdomen. Abdominal tergite 1 greyish-brown medially, ochre-yellowish laterally, tergites 2–5 light brown medially, with cream-yellow areas laterally and anteriorly, wider on posterior segments, tergite 6 almost entirely brownish, an ochre-yellow tinge lateroanteriorly, tergite 7 cream-yellow; sternites 1–7 light ochre-yellowish. Sternite 2 with a pair of strong brown bristles. Terminalia (Fig. 139C, D). Ochre-yellowish. Gonocoxites fused medially, no suture present, bare ventrally, a medioventral projection slightly wider at base than at tip, about half of gonostylus length, with four setulae at distal end, sided by a pair of shorter digitiform projections with three distal small setae, a pair of long laterodistal extensions slightly shorter than gonostylus. Gonostylus simple, elongate, slightly clavate, dorsoventrally compressed, with fine setae along inner margin. Aedeagus large, oblong, ejaculatory apodeme slender at anterior end, wide midway to apex, then divided distally into a pair of lobes extending posteriorly and pointed at tip, extending beyond tip of laterodistal projections of gonocoxite, gonopore dorsally to base, between these lobes; parameres present as a triangular sclerite extending distally, medial short beak at tip with a pair of subapical small setae close to each other and a pair of strong curved spines close to tip, laterally with a pair of long, digitiform projections extending beyond tip of gonocoxite lateral lobes, five setae along most of their length. Gonocoxal bridge not evident. Tergite 9 present as a pair of long laterodistal digitiform extensions, about as long as gonocoxite lateral extensions, setose at tip. Cerci weakly sclerotized between tergite 9 elongate lateral lobes.</p><p>Female (Fig. 139A). As male, except for the following. Wing length, 2.75; width, 1.01 mm. Head. Occiput with four longer setae dorsally to eye anteriorly to lateral ocellus, one dorsally to ocellus, 8 posteriorly to ocellus. Thorax. Scutum with eight supra-alar bristles and three pairs of prescutellars; three pairs of scutellar bristles, outer pair smaller. Proepisternum with four bristles directed ventrally, anepisternum with 5–6 bristles along posterior margin. Mesepimeron with three bristles and 19 small setae and setulae, laterotergite with three bristles and 17 smaller setae or setulae. Metepisternum with 20 small fine setae. Legs. Fore tibia with two bristles at outer face, mid tibia with two dorsolateral rows of 4–5 small bristles, one bristle on outer face medio-distally and four strong setae along ventral margin; hind tibia with three irregular rows of 4–6 small bristles. Terminalia (Fig. 139E). Light brownish-yellow. Sternite 8 elongate, posterior margin with a short median incision, microtrichia and setae evenly distributed, long setae at posterior margin. Sternite 9 slender, anterior apodeme extending to slightly beyond anterior end of terminalia, lateral arms ovoid, elongate, genital chamber elongate. Tergite 8 with a pair of separate large lateral lobes with microtrichia and setae. Tergite 9+10 slender, a pair of sclerotized bands connected medially. Cercomeres 1 and 2 fused, no sign of suture, elongate, wider midway to apex posterior end digitiform, distal setae longer.</p><p>Material examined</p><p>Holotype: male, ZRCBDP 0047888, Nee Soon (NS2), swamp forest, 23.oct.13, MIP leg. (slide-mounted).</p><p>Paratypes (1 male, 1 female). Male: ZRCBDP 0047907, Nee Soon (NS2), swamp forest, 30.oct.13, MIP leg. Female: ZRCBDP 0047927, Nee Soon (NS1), swamp forest, 17.jul.13, MIP leg. (website photo specimen, slide-mounted).</p><p>Etymology</p><p>The species epithet honors PETER NG KEE LIN (1960–), a prominent crustacean and fish systematist with contributions to conservation biology and aquatic ecology. He has been the Director of the Raffles Museum of Biodiversity Research since 1998, and has published over 1,000 scientific papers.</p><p><b>Remarks</b></p><p><i>Epicypta peterngi</i> <b>sp. n.</b>, <i>E. wallacei</i> <b>sp. n.</b>, and <i>E. purchoni</i> <b>sp. n.</b> seem to be part of a small clade within the genus, as suggested by the shape of the aedeagus and other features shared by a larger group of species, such as the distal spines on the parameres.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_18313220 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Epicypta peterngi Amorim & Oliveira & Balbi & Ang & Torres & Yeo & Srivathsan & Meier 2025, sp. n. Amorim, Dalton De Souza Oliveira, Sarah Siqueira Balbi, Maria Isabel P. A. Ang, Yuchen Torres, Ambrosio Yeo, Darren Srivathsan, Amrita Meier, Rudolf Biodiversity Taxonomy Animalia Arthropoda Insecta Diptera Mycetophilidae Epicypta Epicypta peterngi <p><i>Epicypta peterngi</i> Amorim & Oliveira sp. n.</p><p>(Fig. 139A–E)</p><p>https://singapore.biodiversity.online/species/A-Arth-Hexa-Diptera-000794</p><p>urn:lsid:zoobank.org:act: 6F1F1B69-94C1-421B-A172- BA3756255029</p><p><b>Diagnosis</b></p><p>Head ochre-yellowish with large brownish areas, antennal scape, pedicel, and first flagellomere yellowish-brown, remaining flagellomeres light greyish-brown. Scutum dark brown, with ochre-yellowish band at anterior end; scutellum blackish-brown; thoracic pleural sclerites dark greyish-brown. Coxae whitish, hind coxa with a light brown basal tinge, tip of mid and hind femora with a brown mark. Wing membrane light brownish fumose, area along anterior margin on basal half of wing more yellowish. C not extending beyond tip of R 5; M 1+2 about half of r-m length. Dorsal macrotrichia on posterior veins M 1, M 2, and posterior half of M 4, no macrotrichia on anal lobe membrane. Abdominal tergite 1 dark brown, tergites 2–5 greyish-brown medially with a cream-yellow lateral band, larger on tergites 3–4, connecting each other medially on tergite 5, tergites 6–7 greyish-brown. Gonocoxites with a long lateral lobe and a long digitiform dorsal lobe; gonostylus bifid at base, with a short, digitiform internal lobe and a longer outer lobe; aedeagus with a pair of parallel projections distally; paramere with a pair of strong spines on a triangular projection distally; tergite 9 with a pair of long projections slender towards apex.</p><p><i>Epicypta_peterngi _ ZRCBDP 0047888_hapZRCBDP0047888_SMH_holotype</i> [19: A, 149: G, 151: C, 226: C, 229: T, 238: G] cctttcttctactattgcAcatgcaggagcatcagtaga tttagctattttttctcttcatttagcaggaatttcttctattttaggggctattaactttatt acaacaattattaatatacgagctccaggaattacatttgatcgaGtCcctttatttg tttgatctgttttaattactgccgttttattattactatctttaccagtattagcaggggct atCacTatattattGacagatcgaaatttaaatacatcattttttgatccagcagga ggaggagaccctattttatatcaacatttattt</p><p><b>Description</b></p><p>Male. Wing length, 2.56; width, 0.93. Head. Light brownish-yellow medially, ochre-yellowish laterally. Scape and pedicel greyish ochre-yellow, flagellomeres ochre-yellow. Face and clypeus light brownish-yellow, palpomeres 1–3 light brownish-yellow, palpomeres 4–5 lighter, labella whitish-yellow. Occiput with four longer setae dorsally to eye anteriorly to lateral ocellus, two dorsally to ocellus, ten posteriorly to ocellus. Scape about 2.0× pedicel length; flagellomere 4 1.5× longer than wide. Palpomere 4 1.5× palpomere 3 length, palpomere 5 1.9× palpomere 4 length. Thorax. Scutum dark brown, anterior end ochre-yellow, scutellum blackish-brown with ochre-yellow anterolateral corners. Antepronotum, proepisternum, anepisternum, katepisternum, mesepimeron, laterotergite, and metepisternum dark greyish-brown, katepisternum slightly lighter, dark brown. Haltere light ochre-yellowish, no larger setae. Pleural membrane ochre-yellow. Scutum with nine supra-alars and three pairs of prescutellar bristles, two pairs of scutellar bristles and one outer pair of long setae. Proepisternum with three bristles, anepisternum with five bristles along posterior margin. Mesepimeron with two small bristles and 18 small setae, laterotergite with three bristles, one long seta and 18 small setae. Metepisternum with 18 fine setae. Legs. Fore coxa whitish with an orangish tinge, mid and hind coxae whitish, hind coxa with a light brownish tinge at basal end; femora whitish with a light brown tinge, mid and hind femora darker at tip; tibiae and tarsi light brownish-yellow, tibia and each tarsomere with a yellowish tinge at tip. Fore tibia with two lateral bristles medially; mid tibia with 2–3 irregular rows of 4–6 small bristles dorsally, one bristle on inner face medio-distally and three long setae along ventral edge; hind tibiae with two irregular rows of six small bristles dorsally and four longer setae at inner face medio-distally. Fore leg tarsomere 1 as long as tibia, 1.4× tarsomere 2 length. Hind tibial inner spur 4.4× tibia width at apex. Wing (Fig. 139B). Membrane fumose light brown, darker along anterior margin. Sc barely produced. C not produced beyond tip of R 5. R 1 reaching C on distal sixth of wing; R 5 reaching C before level of tip of M 1. First sector of Rs oblique, 0.63× r-m length; r-m oblique. M 1+2 0.61× r-m length; bM 4.6× r-m length; first sector of CuA 0.29× length of second sector of CuA. Cubital pseudovein not produced, CuP extending slightly beyond level of origin of M 4. Anal fold almost reaching wing margin. Posterior veins M 1 and M 2 almost entirely with dorsal macrotrichia, M 4 with macrotrichia on distal half, CuA with macrotrichia on distal fourth of wing; a few macrotrichia on anal lobe membrane. Abdomen. Abdominal tergite 1 greyish-brown medially, ochre-yellowish laterally, tergites 2–5 light brown medially, with cream-yellow areas laterally and anteriorly, wider on posterior segments, tergite 6 almost entirely brownish, an ochre-yellow tinge lateroanteriorly, tergite 7 cream-yellow; sternites 1–7 light ochre-yellowish. Sternite 2 with a pair of strong brown bristles. Terminalia (Fig. 139C, D). Ochre-yellowish. Gonocoxites fused medially, no suture present, bare ventrally, a medioventral projection slightly wider at base than at tip, about half of gonostylus length, with four setulae at distal end, sided by a pair of shorter digitiform projections with three distal small setae, a pair of long laterodistal extensions slightly shorter than gonostylus. Gonostylus simple, elongate, slightly clavate, dorsoventrally compressed, with fine setae along inner margin. Aedeagus large, oblong, ejaculatory apodeme slender at anterior end, wide midway to apex, then divided distally into a pair of lobes extending posteriorly and pointed at tip, extending beyond tip of laterodistal projections of gonocoxite, gonopore dorsally to base, between these lobes; parameres present as a triangular sclerite extending distally, medial short beak at tip with a pair of subapical small setae close to each other and a pair of strong curved spines close to tip, laterally with a pair of long, digitiform projections extending beyond tip of gonocoxite lateral lobes, five setae along most of their length. Gonocoxal bridge not evident. Tergite 9 present as a pair of long laterodistal digitiform extensions, about as long as gonocoxite lateral extensions, setose at tip. Cerci weakly sclerotized between tergite 9 elongate lateral lobes.</p><p>Female (Fig. 139A). As male, except for the following. Wing length, 2.75; width, 1.01 mm. Head. Occiput with four longer setae dorsally to eye anteriorly to lateral ocellus, one dorsally to ocellus, 8 posteriorly to ocellus. Thorax. Scutum with eight supra-alar bristles and three pairs of prescutellars; three pairs of scutellar bristles, outer pair smaller. Proepisternum with four bristles directed ventrally, anepisternum with 5–6 bristles along posterior margin. Mesepimeron with three bristles and 19 small setae and setulae, laterotergite with three bristles and 17 smaller setae or setulae. Metepisternum with 20 small fine setae. Legs. Fore tibia with two bristles at outer face, mid tibia with two dorsolateral rows of 4–5 small bristles, one bristle on outer face medio-distally and four strong setae along ventral margin; hind tibia with three irregular rows of 4–6 small bristles. Terminalia (Fig. 139E). Light brownish-yellow. Sternite 8 elongate, posterior margin with a short median incision, microtrichia and setae evenly distributed, long setae at posterior margin. Sternite 9 slender, anterior apodeme extending to slightly beyond anterior end of terminalia, lateral arms ovoid, elongate, genital chamber elongate. Tergite 8 with a pair of separate large lateral lobes with microtrichia and setae. Tergite 9+10 slender, a pair of sclerotized bands connected medially. Cercomeres 1 and 2 fused, no sign of suture, elongate, wider midway to apex posterior end digitiform, distal setae longer.</p><p>Material examined</p><p>Holotype: male, ZRCBDP 0047888, Nee Soon (NS2), swamp forest, 23.oct.13, MIP leg. (slide-mounted).</p><p>Paratypes (1 male, 1 female). Male: ZRCBDP 0047907, Nee Soon (NS2), swamp forest, 30.oct.13, MIP leg. Female: ZRCBDP 0047927, Nee Soon (NS1), swamp forest, 17.jul.13, MIP leg. (website photo specimen, slide-mounted).</p><p>Etymology</p><p>The species epithet honors PETER NG KEE LIN (1960–), a prominent crustacean and fish systematist with contributions to conservation biology and aquatic ecology. He has been the Director of the Raffles Museum of Biodiversity Research since 1998, and has published over 1,000 scientific papers.</p><p><b>Remarks</b></p><p><i>Epicypta peterngi</i> <b>sp. n.</b>, <i>E. wallacei</i> <b>sp. n.</b>, and <i>E. purchoni</i> <b>sp. n.</b> seem to be part of a small clade within the genus, as suggested by the shape of the aedeagus and other features shared by a larger group of species, such as the distal spines on the parameres.</p> |
| title | Epicypta peterngi Amorim & Oliveira & Balbi & Ang & Torres & Yeo & Srivathsan & Meier 2025, sp. n. |
| topic | Biodiversity Taxonomy Animalia Arthropoda Insecta Diptera Mycetophilidae Epicypta Epicypta peterngi |
| url | https://doi.org/10.5281/zenodo.18313220 |