Mygdonia milivoji, Baňař, Petr, Brailovsky, Harry, Hubáčková, Lenka & Hemala, Vladimír, 2014

Baňař, Petr, Brailovsky, Harry, Hubáčková, Lenka & Hemala, Vladimír, 2014, A new species of the genus Mygdonia (Hemiptera: Heteroptera: Coreidae) from Madagascar with a key to species, Zootaxa 3893 (3), pp. 445-450 : 445-448

Mygdonia milivoji sp. nov.

( Figs. 1 , 3–8 )

Material examined. Holotype, female: SW MADAGASCAR 2013 / ISALO N.P., Analalava for. / Antanambao vill. env., 720m / S22°35′ E45°07′; 16.–19.i. / M. Trýzna. lgt. [printed on white paper] // HOLOTYPE / Mygdonia milivoji sp. nov. / Baňař, Brailovsky, / Hubáčková & Hemala det. 2014 [printed on red paper]. Holotype is deposited in the collection of Moravian Museum in Brno, Czech Republic.

Description (based on female holotype). Measurements (in mm); L = length; W = width. Total body L —26.62. Head (without neck). Total L—2.32; distance of eye to apex of antennifer—0.83; diatone (maximum width across eyes)—2.41; dorsal synthlipsis (minimum interocular distance)—1.56; eye, L—0.64. Antenna. Segment I, L—4.44; segment II, L—3.52, segment III, L—3.33, segment IV, L—5.08. Pronotum. Total L (median)—4.91; maximum W—9.11. Scutellum. L—3.75, W—3.66. Fore leg. Femur, L—5.85; tibia, L—5.58. Middle leg. Femur, L—6.45; tibia, L—6.52. Hind leg. Femur, L—10.25; tibia, L—9.15.

Colouration. Uniformly brown ( Fig. 1 ), antennae somewhat paler, reddish brown; each connexival segment apically with yellowish spot. Abdominal tergites black.

Vestiture. Almost all body faces uniformly covered with short, whitish, appressed setae, dorsum of abdomen and hemelytral membrane bare.

Structure. Head ( Fig. 3 ). Subquadrate, slightly wider than long, ratio 1.04. Antennal tubercles robust, very wide. Eyes small, ocular index 3.68. Dorsum of head between eyes with paired preocellar sulci. Ratio of distance from anterior margin of eye to apex of antennifer to length of eye 1.30. Ocelli small. Antennae long, more than twice longer than head and pronotum together (ratio 2.24), segment I widest, antennal formula (longest segment first) IV:I:II:III. Labium thin, reaching to middle of mesosternum.

Thorax. Pronotum ( Fig. 4 ) robust, with inconspicuous longitudinal impression, widest approximately at two thirds of its length, ratio of pronotum width to its length 1.86. Posterior part of pronotum with conspicuous transverse elevation, humeral angles slightly directed posteriorly. External scent efferent system ( Fig. 8 ) well developed, consisting of ostiole, bilobate peritreme forming two auricles with anterior auricle 3 times larger than posterior auricle, and evaporatorium.

Legs. Pro- and mesofemora with two conspicuous apical teeth (basal one larger, apical one smaller) on their anteroventral faces, metafemora gradually incrassate, with single subapical ventral spine ( Fig. 5 ). Profemora with single row of minute denticles on ventral faces. Pro- and mesotibiae unarmed, metatibiae conspicuously dilated ( Fig. 5 ).

Abdomen. Posterior margin of sternite III conspicuously bifid medially, lacking tubercles. Basis of sternite VII with broadly triangular plate. Paratergites VIII with clearly visible spiracles, rhomboidal; paratergites IX of pentagonal shape, somewhat larger than paratergites VIII ( Fig. 6 ). Posterior margin of tergite VII regularly convex ( Fig. 7 ).

Etymology. Patronym, named after senior authors’ friend Miloš Trýzna (among friends called ‘Milivoj’), collector of the specimen.

Differential diagnosis. Mygdonia milivoji sp. nov. differs from females of M. tuberculosa by absence of conspicuous, large tubercles on pronotum, clavus and corium; and from females of M. elongata by different shape of pronotum; hind tibial dilatation (much broader in M. milivoji ), smaller eye (ocular index 3.68 in M. milivoji , 2.96 in M. elongata ) and other characters (see also the Key).

Distribution. M. milivoji sp. nov. is known only from single female collected in south-west Madagascar (Isalo National Park).

Figures

FIGURES 1 – 2. 1, Mygdonia milivoji sp. nov., female holotype, dorsal habitus (26.62 mm), Isalo National Park; 2, Mygdonia elongata Distant, 1879, female, dorsal habitus (25.18 mm), Ranomafana National Park.

FIGURES 3 – 8. Mygdonia milivoji sp. nov., female holotype; 3, head, dorsal view; 4, pronotum, dorsal view; 5, left hind leg, anterior view; 6, apex of abdomen, ventral view; 7, apex of abdomen, dorsal view; 8, external scent efferent system. Scale bars in mm.