Dudgeodes luntian Garces & Sartori, 2020

Garces, Jhoana M., Sartori, Michel & Freitag, Hendrik, 2020, Integrative taxonomy of the genus Dudgeodes Sartori, 2008 (Insecta, Ephemeroptera, Teloganodidae) from the Philippines with description of new species and supplementary descriptions of Southeast Asian species, ZooKeys 910, pp. 93-129 : 93

publication ID	https://dx.doi.org/10.3897/zookeys.910.48659
publication LSID	lsid:zoobank.org:pub:0D66ACB7-960D-4557-889C-5EC4528E5A40
persistent identifier	https://treatment.plazi.org/id/D13F5B81-5682-491A-AF2A-9D25D99552C3
taxon LSID	lsid:zoobank.org:act:D13F5B81-5682-491A-AF2A-9D25D99552C3
treatment provided by	ZooKeys by Pensoft
scientific name	Dudgeodes luntian Garces & Sartori
status	sp. nov.

Treatment

Dudgeodes luntian Garces & Sartori sp. nov. Figures 4A-C View Figure 4 , 9A-H View Figure 9 , 12B View Figure 12 , 15B View Figure 15 , 16B View Figure 16

Material.

Holotype: Philippines • 1 mature male nymph; Luzon, Laguna, Pangil, Brgy. Balian, Pangil River; 14°24'55"N, 121°29'36"E; c. 200 m a.s.l.; 18 Aug. 2018; leg. Amarga; GenBank: MN853796; PNM: EPH 137/ PNM 13681 in ethanol. Paratypes: Philippines • 1 nymph; same collection data as holotype; GenBank: MN853795; AdMU: EPH 136 on slide • 1 nymph; Oriental Mindoro, Roxas, Brgy. San Vicente, lower reach of Taugad River; 12°37.30'N, 121°22.97'E; 140 m a.s.l.; 8 Dec. 2018; leg. Garces; GenBank: MN853794; AdMU: EPH 127 on slide • 2 nymphs; Luzon, Laguna, Samil River; 14°08'N, 121°31'E; 370 m a.s.l.; 27 June 2018; BIO-PHIL exped.; GenBank: MN853805, MN853806; ZSM: EPH 185 in ethanol, EPH 186 on slide • 1 nymph; Camarines Sur, Lupi, Brgy. Sooc, Sooc River, Bicol National Park; c. 13°52'28"N, 122°56'38"E; 90 m a.s.l.; 20 Aug. 1996; leg. Mendoza; GenBank: MN853804; AdMU: EPH 173 in ethanol • 1 nymph; Luzon, Subic BMA, Triboa River, downstream dam; 14°46'22"N, 120°17'50"E; 60 m a.s.l.; 14 Apr. 2018; leg. Freitag; GenBank: MN853808; AdMU: EPH 247 on slide • 4 nymphs; Negros Oriental, Valencia, Casaroro River downstream; 09°18'N, 123°14'E; c. 150 m a.s.l.; 2019; leg. Garces; GenBank: MN853802, MN853803, MN853800, MN853801; AdMU: EPH 156 on slide, EPH 159 in ethanol, ZSM: EPH 153 on slide, EPH 154 in ethanol • 1 nymph; Negros Oriental, Valencia, Malaunay, small tributary; 09°18'17"N, 123°10'07"E; c. 480 m a.s.l.; 2019; leg. Garces; GenBank: MN85379; AdMU: EPH 149 on slide • 3 nymphs; Negros Oriental, Valencia, Malaunay, small river; 09°18'17"N, 123°10'07"E; c. 470 m a.s.l.; 2019; leg. Garces; GenBank: MN853799, MN853807, MN853798; AdMU: EPH 152 and EPH 239 in ethanol, ZSM: EPH 151 on slide.

Diagnosis.

Dudgeodes luntian sp. nov. can be distinguished from other Oriental Dudgeodes by the combination of the following characters: (1) antenna length shorter than head width, (2) dorsal part of male eyes blackish, (3) four prothorax tubercles, (4) two mesothorax tubercles, (5) no tarsal claw subapical teeth, (6) narrow teeth on median and lateral area of posterior margin of tergite VI, (7) tergite VII posterior margin teeth present on the entire length, (8) longest setae on cerci basal segments more than half of the corresponding segment (9) longest setae on cerci distal segments subequal to the corresponding segments, and (10) presence of brownish band every four segments of the cerci. Among the other Dudgeodes species found on Luzon and Negros islands, D. luntian sp. nov. closely resembles D. pescadori and D. freitagi sp. nov. but can be separated by the combination of the following characters: (1) antenna length shorter than head width, (2) four prothorax tubercles, (3) two mesothorax tubercles, (4) five to six tarsal medial teeth, (5) narrow teeth on median and lateral area of posterior margin tergite VI, (6) longest setae on cerci basal segments more than half of the corresponding segment (7) longest setae on cerci distal segments subequal to the corresponding segments, (8) median tubercles slightly developed on tergite segments I, II, and X, moderately developed on segments III and IX, and well developed on segment VIII, and (9) posterolateral projection on segments V-VIII slightly developed and segment IX moderately developed.

Description.

Mature nymph. Body length ♂ 5.6-5.8 mm, ♀ 6.3 mm; cerci 0.9-1.0 times body length.

Head: Antennae 0.7-0.8 times head width, flagellum with 15-17 segments. Dorsal part of male eyes blackish (Fig. 9A-H View Figure 9 ). Labrum wide, ca. 2.3-2.4 times wider than long, slightly concave in central part of anterior margin. Labial palp segment III elongated, 2.8-3.2 times as long as wide at base.

Thorax: Pronotum (Fig. 4B View Figure 4 ) with four small and round tubercles. Mesonotum (Fig. 4B View Figure 4 ) with two round tubercles; outer margin with regular row of forked thick setae.

Legs: Forefemur dilated, ca. 1.5-1.7 times longer than wide; transverse row of long and apically combed setae across dorsal face; dorsal surface, outer and inner margin sparsely with short thick setae. Fore tarsal claw hooked, bearing five blunt teeth medially and no teeth subapically. Middle and hind femora ca. 2.1-2.2 times longer than wide. Middle and hind tarsal claw hooked, bearing six blunt teeth medially and no tooth subapically.

Abdomen: Tergite with median tubercles (Fig. 4B View Figure 4 ) slightly developed on segments I, II, and X, moderately developed on segments III and IX, and well developed on segments IV-VIII. No posterolateral projections (Fig. 4C View Figure 4 ) on segments II and III, slightly developed on segments IV-VIII, and moderately developed on segment IX.

Tergites IV-VI (Fig. 15B View Figure 15 ) surface covered with short thin setae, thick setae with feathered apex and apically rounded feathered thick setae; posterior margin with long pointed thick setae, forked robust thick setae and thick setae with feathered apex and apically rounded feathered thick setae. Tergites VII-X (Fig. 16B View Figure 16 ) surface and posterior margin with short thin setae, thick setae with feathered apex and apically rounded feathered thick setae. Narrow slender teeth present on posterior margin median area of tergites I-V, posterior margin median and lateral area of tergite VI (Fig. 15B View Figure 15 ), and across entire posterior margin of tergites VII-X (Fig. 16B View Figure 16 ).

Cerci with apically blunt thick setae every segment; longest setae on basal segments more than half of corresponding segment; longest setae on distal segments subequal to corresponding segments. Brownish band present every four segments (Fig. 4A View Figure 4 ).

Etymology.

The species is named after the Filipino word ‘luntian’ meaning green, which perfectly describes the localities where this species is found.

Distribution and biology.

Dudgeodes luntian sp. nov. is so far only known from Luzon, Mindoro and Negros islands, Philippines. All material was collected at altitudes of 20-500 m a.s.l. mostly surrounded by secondary vegetation, rarely secondary forest, with few houses and farmland in some distance from the river bed. Detailed ecological information of the Mindoro locality is described in Garces et al. (2018).