Arcofaciella Fennah, 1956
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publication ID |
https://doi.org/ 10.5852/ejt.2021.748.1341 |
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publication LSID |
lsid:zoobank.org:pub:E1934A9A-AC29-4B41-84A0-56AF6F18B220 |
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DOI |
https://doi.org/10.5281/zenodo.4746327 |
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persistent identifier |
https://treatment.plazi.org/id/03F02E5B-4B6D-FFFD-4F65-FA7AC82EF809 |
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treatment provided by |
Plazi |
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scientific name |
Arcofaciella Fennah, 1956 |
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Genus Arcofaciella Fennah, 1956 View in CoL View at ENA
Type species
Arcofaciella verrucosa Fennah, 1956 View in CoL .
Diagnosis
Head including eyes ( Figs 1G View Fig , 2A View Fig , 3G View Fig , 4A View Fig , 5G View Fig , 6A View Fig ) as wide as or wider than pronotum. Vertex ( Figs 1G View Fig , 2A View Fig , 3G View Fig , 4A View Fig , 5G View Fig , 6A View Fig ) short, trapezoidal; anterior margin transverse, carinate, somewhat incised medially at areolet; posterior margin transverse; lateral margins concave. Frons ( Figs 1H View Fig , 2C View Fig , 3H View Fig , 4C View Fig , 5H View Fig , 6C View Fig ) at midline longer than wide at widest part, widest above level of ocelli; lateral margins convex; median carina forked at fastigium, areolet weakly depressed. Postclypeus ( Figs 2B–C View Fig , 4B–C View Fig , 6B–C View Fig ) in lateral view more or less at right angle or obtuse angle to base of frons; in ventral view lateral carinae straight, converging to labrum, median carina absent or present. Rostrum with apex reaching mesotrochanters. Antennae ( Figs 1H View Fig , 2C View Fig , 3H View Fig , 4C View Fig , 5H View Fig , 6C View Fig ) cylindrical, short, stout, second segment markedly longer than first segment, but both together not exceeding length of eye. Pronotum ( Figs 1G View Fig , 2A View Fig , 3G View Fig , 4A View Fig , 5G View Fig , 6A View Fig ) subequal or longer than vertex along midline, sloping anteriorly and laterally; anteriorly shallowly convex, posteriorly shallowly excavate; median carina distinct, lateral carinae developed only in anterior portion in line with lateral margins of vertex; disc with two pits on each side of median carina. Mesonotum ( Figs 1G View Fig , 2A View Fig , 3G View Fig , 4A View Fig , 5G View Fig , 6A View Fig ) strongly convex, almost gibbous, strongly sloping laterally and posteriorly, disc tricarinate with lateral carinae feeble. Mesoscutellum ( Figs 1G View Fig , 2A View Fig , 3G View Fig , 4A View Fig , 5G View Fig , 6A View Fig ) distinctly depressed, horizontal, median line of scutum obsolete posteriorly, but present on scutellum, with a distinct groove between scutum and scutellum. Forewings ( Figs 2D View Fig , 4D View Fig , 6D View Fig ) long, corium enfolding abdomen at region of node, costal margin sinuate, concave distad of node, apical margin shallowly undulate, forks of ScP-R and CuA distad of union of claval veins. Legs relatively short and stout, profemora shorter than procoxae (e.g., Figs 1F View Fig , 3F View Fig , 5C View Fig ), hind tibiae with two lateral spines (one very small at base, the other large at about one third from apex) ( Fig. 1F View Fig ) and five teeth at apex; hind tarsomere I with 7, 8 or 9 small even teeth at apex, hind tarsomere II with 5 apical teeth. Anal segment of male ( Figs 2E View Fig , 4E View Fig , 6E View Fig ) in caudal view ring-like, lateroapical angles weakly protruding caudad or not produced. Pygofer ( Figs 2G View Fig , 4H View Fig , 6G View Fig ) without medioventral process. Genital styles ( Figs 2H–J View Fig , 4I–J View Fig , 6H–I View Fig ) long. Aedeagus ( Figs 2K–M View Fig , 4K–L View Fig , 6J–K View Fig ) with phallotheca. Aedeagus tubular, apical part recurved downward. Phallotheca with valvular process, basal ⅔ quadrate.
Remarks
This genus is similar to Arcofacies Muir, 1915 but differs from it by: frons with lateral margins distinctly arched ( Figs 1H View Fig , 2C View Fig , 3H View Fig , 4C View Fig , 5H View Fig , 6C View Fig ) (vs frons with lateral margins subparallel in Arcofacies ( Chen et al. 2007: figs 2, 11, 19, 25)); antennae short, obviously not reaching frontoclypeal suture ( Figs 1H View Fig , 2C View Fig , 3H View Fig , 4C View Fig , 5H View Fig , 6C View Fig ) (vs antennae long, nearly reaching or surpassing frontoclypeal suture in Arcofacies ( Chen et al. 2007: figs 2, 11, 19, 25)); pronotum with lateral carinae not extending to hind margin ( Figs 1G View Fig , 2A View Fig , 3G View Fig , 4A View Fig , 5G View Fig , 6A View Fig ) (vs pronotum with lateral carinae extending to hind margin in Arcofacies ( Chen et al. 2007: figs 1, 10, 18, 24)); spinal formula of hind leg 5-8-5 or 5-9-5 (vs spinal formula of hind leg 5-6- 4 in Arcofacies ).
Host plant
Bambusoideae Luerss.
Distribution
Oriental region ( China, Malay Peninsula, India).
Key to species (males) of Arcofaciella Fennah, 1956
1. Frons in profile inclined anteriorly ( Figs 3I View Fig , 4B View Fig , 5I View Fig , 6B View Fig ); clypeus in profile bent at right angle to frons ( Figs 3I View Fig , 4B View Fig , 5I View Fig , 6B View Fig ), with median carina absent ( Figs 4C View Fig , 6C View Fig ) ....................................................... 2
– Frons in profile not inclined anteriorly ( Figs 1I View Fig , 2B View Fig ); clypeus in profile bent at obtuse angle to frons ( Figs 1I View Fig , 2B View Fig ), with median carina present ( Fig. 2C View Fig ) ............................................. A. indiana View in CoL sp. nov.
2. Genital styles in posterior view with an angled process medioventrally ( Fig. 4I View Fig ) ............................. ........................................................................................................... A. obflexa Guo & Liang, 2005 View in CoL
– Genital styles in posterior view without angled process medioventrally ( Fig. 6H View Fig ) ......................... 3
3. Genital styles in posterior view with hamular process at inner apical laterally ( Fig. 6H View Fig ) .................. .................................................................................................................. A. verrucosa Fennah, 1956 View in CoL
– Genital styles in posterior view with quadrate process at inner apical laterally ................................. ............................................................................................................... A. penangensis ( Muir, 1919) View in CoL
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