Colocasiomyia liae Jiao & Gao, 2020
|
publication ID |
https://dx.doi.org/10.3897/zookeys.968.56677 |
|
publication LSID |
lsid:zoobank.org:pub:3F89CD8E-549D-42DE-94C8-618FCDB62D38 |
|
persistent identifier |
https://treatment.plazi.org/id/D074B28A-894D-4B01-9D8E-537EE4140D29 |
|
taxon LSID |
lsid:zoobank.org:act:D074B28A-894D-4B01-9D8E-537EE4140D29 |
|
treatment provided by |
|
|
scientific name |
Colocasiomyia liae Jiao & Gao |
| status |
sp. nov. |
Colocasiomyia liae Jiao & Gao View in CoL sp. nov.
Figures 3F-J View Figure 3 , 5 View Figure 5
Diagnosis.
This species closely resembles C. rhaphidophorae in external morphology and structure of male and female genitalia, but can be distinguished from the latter by epandrial ventral lobe rod-like, distally slightly broadened in lateral view, apically inlaid with a relatively long, claw-like peg (Fig. 5A, B View Figure 5 ); aedeagus broader in distal half in ventral view (Fig. 5D View Figure 5 ); surstylus apically expanded, with 1 dorsosubapical, 2 ventrosubapical, minute sensilla in addition to three small setulae at apex (Fig. 5A View Figure 5 ); distal, narrow elongation of oviscapt somewhat sinuate in lateral view (Fig. 5F View Figure 5 ).
Description.
(♂, ♀). Head: Supracervical setae about 9-10 per side. Dorsomedial arm of tentorial apodeme about 1/3 as long as dorsolateral arm. Eye red, somewhat roundish, with very sparse interfacetal setulae. Frontal vitta mat, black. First flagellomere not concave on inner margin. Facial carina broad trapeziform, medially twice as wide as first flagellomere, as long as pedicel and first flagellomere combined. Palpus convex on ventrodistal portion. Cibarium posterior sensilla minute, 2 or 3 per side. Labellum with 34 pseudotracheae per side.
Thorax (Fig. 3F, H View Figure 3 ): Scutum, scutellum and thoracic pleura glossy, black. Acrostichal setulae in 6 rows.
Wing (Fig. 3I View Figure 3 ) hyaline, veins yellow. Halter grayish brown except for grayish yellow stalk.
Legs (Fig. 3F, J View Figure 3 ) blackish brow to black except for grayish yellow knee joints and tarsi: Foreleg second tarsomere with 10 pegs (Fig. 3J View Figure 3 ). Foreleg coxa large, with 1-2 long setae on underside near attachment to trochanter. Small preapical dorsal seta present only on hindleg tibiae.
Abdomen (Fig. 3F View Figure 3 ): Tergites glossy, entirely black except for anterior, narrow, grayish margins on III-VI; II to VI+VII each bearing setulae and setae in approximately 3-4 transverse rows; setae of posteriomost row largest. Sternites yellowish brown to blackish brown; VI posteriorly bilobed.
Male terminalia (Fig. 5A-E View Figure 5 ): Epandrium dorsally narrow, with prominent apodeme on anteromedial to ventral margin, unpubescent on medial and anteroventral portions; ventral portion curved inward, apically articulated to lateral arm of hypandrium; ventral lobe well developed, with two long and one medium-length, thick setae on its insertion, and 6-7 setae along ventral margin (Fig. 5A, B View Figure 5 ). Cercus somewhat trapeziform, pubescent on dorsal 2/3, with ca 29 setae on dorsal 1/3 and posterior margin (Fig. 5A View Figure 5 ). Surstylus entirely narrow sclerite, grayish yellow, elongated downward, basally articulated with epandrial ventral lobe (Fig. 5A, B View Figure 5 ). Tenth sternite medially forms vertical ridge, ventrally folded upwardly, forming a large, peripheral lobe (Fig. 5C View Figure 5 ). Hypandrium long, thin plate, distal 1/2 constricted, posteriorly T-shaped, with lateral arms fused to aedeagal basal processes (Fig. 5D, E View Figure 5 ). Paramere broad, double-layered, coalescent to hypandrium, gently curved ventrad at distal 1/3, ventrosubapically with a minute sensillum, distally hirsute (Fig. 5D, E View Figure 5 ). Aedeagus entirely unpubescent, bent dorsad gently (Fig. 5D, E View Figure 5 ); aedeagal basal processes somewhat membranous, connecting dorsobasal corners of aedeagus and lateral arms of inner and outer layers of hypandrium (Fig. 5D, E View Figure 5 ).
Female terminalia (Fig. 5F View Figure 5 ): Tergite VII mid-dorsally not constricted; VIII pubescent nearly entirely, with 3 setae in a vertical row on discolored, posteroventral portion. Oviscapt with distal, narrow elongation in addition to proximal, broad portion; proximal portion with large patch of dense, distinct warts; distal, narrow portion, with ca 2, 8 and 5 trichoid ovisensilla per side on basal 1/3 of dorsal margin, entire ventral margin, and at apex, respectively, and a tiny, peg-like ovisensillum near subapical, dorsal margin.
Measurements: BL = 2.45 (1♀ paratype: 2.60) mm, ThL = 1.10 (0.93) mm, WL = 2.08 (1.80) mm, WW = 0.91 (0.75) mm.
Indices: arb = 0/0 (1♀ paratype: 0/0), FW/HW = 0.57 (0.58), ch/o = 0.47 (0.51), prorb =1.14 (1.05), rcorb = 0.28 (0.45), orbito = 0.67 (0.86), vb = 0.34 (0.35), dcl = 0.53 (0.53), dcp = 0.97 (0.96), sterno = 0.75 (0.68), sctl = 0.56 (0.59), sctlp = 1.20 (1.03), C = 1.75 (1.64), 4c = 1.12 (1.18), 4v = 1.58 (1.70), 5x = 0.88 (0.92), ac = 3.94 (3.68), M = 0.36 (0.34), C3F = 0.82 (0.74).
Material examined.
Holotype ♂ (#10485): China: ex inflorescence of Rhaphidophora crassicaulis Engl. & Krause, Qimaba, Lüchun, Yunnan, China, 22°48.0'N, 102°15.0'E, ca 750 m, 6.vii.2020, Jian-Jun Gao and Run-Jie Jiao (KIZ) GoogleMaps . Paratype: same data as holotype (1♀: #10486) (KIZ) GoogleMaps .
Distribution.
China (Yunnan).
Host plants.
Rhaphidophora crassicaulis Engl. & Krause (Fig. 1E-H View Figure 1 ).
Etymology.
Patronym, in honor of Professor Heng Li (Kunming Institute of Botany, Chinese Academy of Sciences), who helped us with the identifications of various aroid host plants of Colocasiomyia flies.
Remarks.
Numbers of adults of this species were obtained by rearing infructescences of R. crassicaulis collected on November 1, 2018 from the type locality, indicating that this species breeds on inflorescences/infructescences of this host plant. These adults were not defined as type specimens due to obviously insufficient body pigmentation and sclerotization, though some of them were used for DNA barcoding.
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.
|
Kingdom |
|
|
Phylum |
|
|
Class |
|
|
Order |
|
|
Family |
|
|
Genus |