Microptila genka, Ito, Tomiko, 2017
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publication ID |
https://doi.org/ 10.11646/zootaxa.4232.1.7 |
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publication LSID |
lsid:zoobank.org:pub:7C3A4400-CCA5-4E9E-82BA-F8B931BC3F9B |
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DOI |
https://doi.org/10.5281/zenodo.6020935 |
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persistent identifier |
https://treatment.plazi.org/id/9C722879-8F74-FFE6-FF20-FEFAFD54F8AD |
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treatment provided by |
Plazi |
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scientific name |
Microptila genka |
| status |
sp. nov. |
Microptila genka sp. nov.
( Figs 2 View FIGURE 2 , 4 View FIGURE 4 B, 5)
Diagnosis. The male of this species is similar to those of Microptila orienthula and the Vietnamese M. dironga Oláh and Johanson 2010 , but can be distinguished from these as follows: (1) Segment IX has a broader tegmental bridge (cf. the very narrow bridge in M. orienthula and M. dironga ), with the dorsal midline about 1/5 as long as segment IX ( Fig. 2 View FIGURE 2 B); (2) the subgenital plate is rounded caudally ( Figs. 2 View FIGURE 2 B, 2D, cf. the plate has a tiny U- or Vshaped excavation caudally in M. orienthula ); and (3) the inferior appendages are stout with thick setose ridges mesally ( Figs. 2 View FIGURE 2 A, 2C, 2E, cf. the rather slender appendages in M. dironga ). Females of this species are similar to those of M. orienthula , but can be distinguished from the latter by the presence of a triangular median process on the caudal margin of segment VII ( Fig. 2 View FIGURE 2 G, cf. the caudal margin of segment VII is wholly convex in M. orienthula ).
Male. Length of each forewing and hind wing 1.6–1.7 mm and 1.4–1.5 mm, respectively (n = 3). Antennae each 19-segmented and 0.5–0.6 mm long (n = 3).
Genitalia ( Figs. 2 View FIGURE 2 A–2F). Segment IX (IX) annular, in dorsal view ( Fig. 2 View FIGURE 2 B) excavation of anterior margin semi-circular, excavation of posterior margin broadly concave; transverse tegmental bridge broad, dorsal midline about 1/5 as long as segment IX; in ventral view ( Fig. 2 View FIGURE 2 C) excavation of anterior margin broadly triangular, excavation of posterior margin wide and shallow. Tergite X (t X) semimembranous, transparent, with lightly sclerotized lateral and caudal margins, quadrate, with deep and wide triangular excavation caudally in dorsal view ( Fig. 2 View FIGURE 2 B). Subgenital plate (sg plate) twice as long as tergite X, elongate ovate, rounded caudally, semimembranous with lightly sclerotized lateral margins ( Figs. 2 View FIGURE 2 A, 2B, 2D). Inferior appendages (inf app) large, setose, without any branches; in ventral view ( Fig. 2 View FIGURE 2 C) each with basal 2/3 stout, apical 1/3 slender, apex incurved and acute; in ventromesal view ( Fig. 2 View FIGURE 2 E) basal 2/3 with longitudinal setose ridge mesally and apical 1/3 rectangular with strongly sclerotized ridge. Phallus long with slender, elongate titillator (ti) arising near apical 1/4, titillator encircling phallus 1.5 times ( Fig. 2 View FIGURE 2 F).
Female ( Fig. 2 View FIGURE 2 ). Length of each forewing and hind wing 1.6–1.8 mm and 1.3–1.4 mm, respectively (n = 4). Antennae each 19-segmented and 0.5–0.6 mm long (n = 4).
Abdominal segments I–VII densely covered with long thick setae. Segment VII (VII) tergite and sternite fused laterally, caudal margin with triangular median process in ventral view ( Fig. 2 View FIGURE 2 G). Segment VIII almost as long as segment VII, often withdrawn into segment VII.
Holotype: male, Japan, Ryukyu Islands , Okinawa-jima , Nago-shi, Genka , hygropetric zone near Hogenhashi, 26˚36’16” N, 128˚04’29” E, 65 m a.s.l., 8.iv.2011, T. Ito (CBM-ZI 151359).
Paratypes: 2 males, 1 female, same data as holotype (CBM-ZI 151360–151362).
Other specimens examined. 1 male, same data as holotype . Japan, Ryukyu Islands , Ishigaki-jima: 2 males, 3 females, hygropetric zone beside Nagura-gawa, 18.iii.2016, T. Ito ; 1 male, 1 female, unnamed waterfall beside foot path of Mt. Omoto-dake , 20.iii.2016, T. Ito.
Habitat ( Fig. 4 View FIGURE 4 B). Adults of this species were collected at hygropetric zones and waterfalls.
Etymology. The specific name refers to the locality ( nakama , a noun) where the type specimens were collected.
Distribution ( Fig. 5 View FIGURE 5 ). Japan (Ryukyu Islands: Okinawa-jima, Ishigaki-jima).
Japanese name. Genka-mikuro-himetobikera.
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.