Genus Articrius Emeljanov, 2008

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• Articrius Emeljanov, A.F. 2008. New Genera and New Species of the Family Dictyopharidae (Homoptera), with Notes on the Systematics of the Subfamily Dictyopharinae. Entomological Review (English translation of Entomologicheskoe Obozrenie) 88(3): 296-328 [English translation of Entomologicheskoe Obozrenie, 2008, 87(2): 360–396] [304].

  Type species:

   Thanatodictya handschini Lallemand, 1935 by original designation.

Introduction

Created by Emeljanov (2008) by the transfer of Thanatodictya handschini Lallemand and based on a female "paratype". Lallemand (1935) did not designate a holotype and paratypes but merely stated "3 ex." which meant he had three syntype specimens of unknown sex. Only the one species is known.

Distribution

States

Northern Territory

IBRA and IMCRA regions

IBRA

NT: Pine Creek (PCK)

Diagnosis

Cephalic process rather thick, relatively short, prismatic, truncate at apex. Coryphe more than 4 times as long as wide, with sharper lateral carinae and sharp median carina between and in front of eyes along half length of process, slightly narrowed forward in this part. Lateral carinae forming characteristic break-bend and becoming less sharp, median carina becoming weak and narrow in this area before obtuse-angled, almost transversely truncate apex. Lateral surfaces of cephalic process at sides of coryphe in form of rather wide stripes (as those in Hyalodictyon). Surface of coryphe slightly concave in front of eyes, process slightly ascending. Metope parallel-sided, semicircularly rounded at apex; clypeal margin gently concave; all carinae developed entirely. Intermediate carinae near clypeus situated at equal distance from each other and from sides of metope, weakly diverging about as far as level of upper margins of eyes, and then running in parallel to join in form of semicircle at apex; on process in front of eyes, lateral and middle areas equal in width, lateral areas slightly deflected at margins. Apical sagittal carina long and sharp, lateral areas of metope widened before it; middle areas of metope curved upward apically and occupying lower part of apex. Metope in lateral view concave opposite anterior margins of eyes and convexly rounded at apex, cephalic process slightly narrowed toward apex (in lateral view). Postclypeus weakly concave, with sharp carinae. Anteclypeus in lateral view slightly concave in middle part, lateral carinae vanishing near its middle in area of concavity. Narrow obtuse-angularly rounded lobes visible opposite antennae (not visible in front view). Antennae small, 2nd segment approximately globose. Postocular prominences slightly swollen dorsally, with darkened depression ventrally. Posterior margin of vertex obtuse-angularly concave. Rostrum rather short, about half of ultimate segment projecting beyond hind coxae; penultimate segment about 1.5 times as long as ultimate one. Pronotum obtuseangularly roundly projecting forward, sharp depressions behind eyes absent. Median carina of disc sharp and high, lateral carinae of disc in anterior part (anterolaterodiscal carinae) sharply pronounced, arcuately deflected inwards along margin of disc anteriorly, sharply terminating posteriorly, thus, half of length of disc without carinae but with oblique weak keelshaped elevations, which are not continuations of anterior carinae. Lateral carinae of pronotum present only anteriorly, then vanishing; collateral carinae sharp along entire length. Pectoral carinae absent. Scutellum with 3 longitudinal carinae; lateral carinae bifurcating anteriorly; outer branch weakened at base, running straightly as continuation; inner branch deflected medially, but pronounced more sharply and running continuously. Tegulae without carinae. Fore wing oblong, slightly widened distally, semi-elliptically rounded at apex. Veins ScR and M forming stem slightly shorter than arculus. First branchings of M and CuA situated at about one level (on one wing of the paratype, M branching earlier than СuА; on other wing, otherwise). Stigma widened, with posterior margin angularly receding backward; stigma crossed by several not parallel veins suggesting reticulate venation. Claval veins joined in basal third of clavus, fold present between branching of MA and MP. In distal part of membrane, cross-veins numerous but regular. Legs moderately short. Hind tibia with 4 lateral teeth, 8 teeth at apex; 1st and 2nd segments with numerous teeth: 17 on 1st segment, 21 on 2nd. Ovipositor with large, elongately trapeziform postvaginal plate narrowed backward. Outer lobes of gonoplacs apparently without appendages, with capitate prominence at base on outer wall; straight elongate elevation running from this prominence basally; other elongate elevation running more dorsally, strongly curved upward and backward, bordering pit above capitulum; elongate elevations gradually weakened and vanishing. Anal tube rather wide, without setae with papillary bases.
Articrius differs from the genus Thanatodictya Kirk. in the following characters: cephalic process wide, truncate apically; intermediate and median metopal carinae entirely developed; lateral carinae of scutellum distinctly bifurcating anteriorly; and apical part of lateral areas of metope not separated from its basal part by distinct additional carina. (Emeljanov 2008)

Diagnosis References

Emeljanov, A.F. 2008. New Genera and New Species of the Family Dictyopharidae (Homoptera), with Notes on the Systematics of the Subfamily Dictyopharinae. Entomological Review (English translation of Entomologicheskoe Obozrenie) 88(3): 296-328 [English translation of Entomologicheskoe Obozrenie, 2008, 87(2): 360–396] [304–305]

History of changes