Terocelion terezae, Ševčík, 2012
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publication ID |
https://doi.org/ 10.5281/zenodo.5332152 |
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DOI |
https://doi.org/10.5281/zenodo.5409399 |
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persistent identifier |
https://treatment.plazi.org/id/C63087EA-9816-C128-FE67-FF10FC3EF9BC |
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treatment provided by |
Diego |
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scientific name |
Terocelion terezae |
| status |
sp. nov. |
Terocelion terezae View in CoL sp. nov.
( Figs. 2 View Figs , 4, 6 View Figs , 8 View Figs )
Type material. HOLOTYPE: J, BRUNEI: Seria , swamp forest, 14.ii.–5.iii.1982, M. C. Day leg., Malaise trap ( BMNH).
Description. Male. Body length (without antennae) 5.9 mm. Wing length 3.5 mm (holotype). Ratio of wing length to width 2.8.
Head. Compound eyes narrow, 2.2 times as high as broad in lateral view, deeply emarginated above antennae. Antenna long, about 1.6 times as long as the head and thorax together, strongly pectinate, mostly brown, with 14 flagellomeres ( Fig. 2 View Figs ). Flagellomeres 1 to 13 with a long anterior process, the longest about as long as the height of head.
For the other characters see the previous species.
Thorax. Mostly yellowish brown, the chaetotaxy and coloration similar to the previous species. Mediotergite yellowish, posteriorly protruding, with a distinct triangular subscutellar membranous area sagitally.
Wing ( Fig. 4 View Figs ) hyaline, distinctly marked ( Figs. 2 View Figs , 4 View Figs ). Wing venation as in the previous species, except R-M fusion shorter than the stem of M-fork and CuA 2 even more downcurved towards the tip which does not reach the wing margin.
Legs. Coxae dark brown. Femora yellow, basally and apically darkened. Tibiae light brown, darkened at apical ends. All tibiae with trichia arranged in dense longitudinal rows. Hind tibia ventrally (except proximal and distal ends) slightly swollen and densely covered with trichia not arranged in rows. Tibial spurs: 1, 2, 2. Mid and hind tibia with posteroventral spurs about twice as long as the anteroventral ones and apically with a transverse comb of closely set short setulae.
Abdomen relatively long, mostly dark brown, tergites 3–6 with light anterior markings ( Fig. 2 View Figs ). Sternites 1–5 yellowish with dark apical margins. Terminalia ( Fig. 6 View Figs ) brown. Tergite 9 rounded, subtriangular, about as broad as long. Gonocoxites almost completely fused, with dark setae on the posterior margin. Gonostylus 1.4 times as long as gonocoxite, 3.5 times as long as wide, dorsoventrally flattened, apically rounded, without teeth. Longitudinal furrow on gonostylus less distinct than in the previous species.
Female. Unknown.
Differential diagnosis. The strongly pectinate male antennae are diagnostic for this species, in combination with the characters stated above under the diagnosis of the genus.
Etymology. This beautiful species is named after my beautiful wife, Tereza.
Distribution. Brunei.
Comments. The completely fused gonocoxites and the more developed subscutellar membranous area are noteworthy and may be considered as apomorphic features in relation to T. melanoleucum sp. nov. Both the new species of Terocelion gen. nov. also have relatively the longest pectinate antennae (in relation to body length) among all keroplatids. Within Sciaroidea, the record holder in this respect is probably the Oriental Pectinepsia pulcherrima Ševčík & Hippa, 2010 with pectinate antennae almost as long as the entire body ( ŠEVČÍK & HIPPA 2010). Interestingly, this species like T. terezae sp. nov. also occurs in northern Borneo, which poses a question about the purpose of such strongly modified antennae in this area.
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.