Latematium cygnetis Fieber 1877
Creators: name: Gnezdilov, Vladimir M.
name: Soulier-Perkins, Adeline
name: Bourgoin, Thierry
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Issidae
Latematium
Latematium cygnetis

description: Latematium cygnetis (Fieber, 1877)
Hysteropterum cygnetis Fieber, 1877: 27 Falcidius cygnetis (Fieber), Dlabola 1979: 280 Latematium cygnetis (Fieber), Gnezdilov 2003: 67 (Fig. 16)
Type material examined. 13 syntype (MNHN (EH)7485), with printed label: “ Mann, 1862, Spalato” and small green square (NLC). 1Ƥ syntype (MNHN (EH)7474), with small green square (PC).
Note. The species was based on a male (or males) and a female (or females) from Dalmatia (Spalato). According to Fieber’s manuscript the specimens are in NMW. This was confirmed by Gnezdilov (2003) who studied male and female syntypes deposited in NMW. We therefore prefer to leave all the specimens in NLC and PC as syntypes until a lectotype is designated from the material in NMW.
Thabenula gen. nov.
Type species: Mycterodus sulcatus Fieber, 1876: 251, [separata 1876: 241]
Diagnosis
Metope with lateral keels turned at right angle and joined to lateral margins of coryphe. Sublateral carinae present only in apical part of metope. Sublateral carinae of metope fused apically below anterior margin of coryphe. Median carina of metope distinct only in upper ¼. Clypeus with angularly convex metopoclypeal suture. Postclypeus flattened dorsally, without keels. Antennal pedicel cylindrical. Rostrum reaching hind coxae. Coryphe elongate, with triangular anterior part and with weak median carina. Pronotum with convex anterior margin and straight posterior margin. Paradiscal fields narrow. Paranotal lobes large. Mesonotum longer than pronotum, with median carina. Fore wings narrowing apically, without hypocostal plate. Radius bifurcate, media trifurcate, cubitus anterior simple (R 2, M 3, CuA 1). Radius bifurcated near to its base, media at middle of wing. Clavus 0.7 times as long as wing, with cuspidal caudo-dorsal angle. Cubitus posterior turned at obtuse angle before caudo-dorsal angle of clavus and reaching wing margin beyond claval apex. Each hind wing in shape of two equal lobes, with anterior margin concave and with deep cleft between remigium and vannus. Radius, cubitus anterior and cubitus posterior, and first anal veins simple, media and postcubitus bifurcate (R 1 M 2 CuA 1 CuP 1 Pcu 2 A1 1). Cubitus anterior and cubitus posterior fused before notch of wing margin. Hind margin of female VII sternum with large square median process. Anal tube elongate. Anal column short.
Comparison
Externally similar to the genus Mycterodus Spinola. The new genus is closely related to the Oriental genus Thabena Stål, 1866 (sensu Gnezdilov, 2009) according to the lateral keels of metope angularly turned to the anterior margin of the coryphe, the venation of fore wings, the clavus with cuspidal caudo-dorsal angle, cubitus posterior of fore wing reaching wing margin beyond claval apex, the bilobed hind wings and the hind margin of female VII sternum with a large median process. It differs from Thabena by the triangular anterior part of the coryphe and the more narrow vannus of the hind wings.
Etymology
The generic name is derived from Thabena to which it is closely related. Feminine in gender.
description: Published as part of Gnezdilov, Vladimir M., Soulier-Perkins, Adeline & Bourgoin, Thierry, 2011, Fieber's original drawings and their corresponding types for the family Issidae (Hemiptera, Fulgoromorpha) in the Muséum national d'Histoire naturelle of Paris, France, pp. 24-34 in Zootaxa 2806 on pages 32-33, DOI: 10.5281/zenodo.202303