Hebrus fulvinervis Horváth, 1929,

Kment, Petr, Jindra, Zdeněk & Berchi, Gavril Marius, 2016, Review of West-Palaearctic Hebridae with description of a new species and redescription of Hebrus fulvinervis (Hemiptera: Heteroptera), Zootaxa 4147 (3), pp. 201-239: 220-224

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http://doi.org/10.11646/zootaxa.4147.3.1

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scientific name

Hebrus fulvinervis Horváth, 1929
status

 

Hebrus fulvinervis Horváth, 1929 

( Figs. 40–43View FIGURES 40 – 45. 40 – 43, 46–65View FIGURES 46 – 53View FIGURES 54 – 56View FIGURES 57 – 64View FIGURES 65)

Hebrus ruficeps  (misidentification): Lindberg (1922): 16 (faunistics).

Hebrus fulvinervis Horváth, 1929: 313  (original description, comparison with H. ruficeps  ). Syntypes: 7 specimens, Romania: Cruce (1 spec.), Sibiu (2 spec.)  , Râu de Mori (1 spec.); Bosnia and Herzegovina: Jablanica (1 spec.), Sarajevo (2 spec.) ( HNHM)  .

Neogaeus fulvinervis  : Jordan (1954): 603 –604 (comparison with remaining species of Europe and Near East); Wagner (1957): 202 (comparison with H. franzi  ).

Hebrus fulvinervis: Stichel (1955): 150  –151 (key, diagnosis), Stichel (1956): 162 (catalogue), Benedek (1969): 83 (key), Benedek (1970): 43 –44 (faunistics); Andersen (1995): 80 (catalogue).

Type material examined. Syntypes: 1 ♀ (macropterous), ‘Malomviz / Pável [p, white label] // fulvinervis  [hw, underlined with red] / det. Horváth [p, white label] // TYPUS [p, red label]’ (HNHM); 1 Ƌ 1 ♀ (brachypterous), ‘Nagyszeben / Coll. Fuss [p, white label] // pusillus  [hw] Coll. Fuss [p, white label] // fulvinervis  [hw, underlined with red] / det. Horváth [p, white label] // Ƌ or ♀ [hw; respectively] / TYPUS [p, red label]’ (HNHM).

Additional material examined. BULGARIA: Blagoevgrad Province: Gara Sandanski, Struma , 20.vii.1956, 3 Ƌ 3 ♀, L. Hoberlandt lgt., P. Kment det. ( NMPC)  ; Gotse Delchev (→ Ognianovo), Mesta river banks, 500 m a.s.l., Locality No. 13B/72, 16.viii.1972, 1 Ƌ (brachypterous)  , A. Merta lgt. ( MMBC)  .

Redescription. Macropterous and brachypterous form. Colouration ( Figs. 40–43View FIGURES 40 – 45. 40 – 43). Head yellowish to reddish brown, in some specimens somewhat darker anteriorly, sometimes narrowly infuscate around ocelli. Eyes red to dark brown. Antennal segments brown, basal two thirds of segment I and basal third of segment II paler, yellowish brown. Bucculae and labium yellowish brown. Pronotum and mesoscutellum yellowish to reddish brown, in some specimens pronotum anterolaterally dark brown; metanotal elevation (‘scutellum’) darker than pronotum, brown to dark brown. Propleura and meso- and metacoxal cavities yellowish to reddish brown, remaining portions of meso- and metathorax ventrally brown. Legs yellowish to pale brown. Clavus anteriorly milky white, in its posterior one to two thirds gradually becoming brown. Veins of corium yellowish to reddish brown, concolorous with disc of pronotum, only anteriorly infuscated with dark brown; corium between veins white. Membrane of brachypterous form completely brown ( Fig. 41View FIGURES 40 – 45. 40 – 43), in macropterous form brown with conspicuous oval whitish central spot, and two indistinct paler spots anterolaterally ( Figs. 40, 42–43View FIGURES 40 – 45. 40 – 43). Abdomen dark brown, pygophore slightly paler.

Vestiture. Pubescence on head, pronotum, sides of thorax, mesoscutellum and metanotal elevation (‘scutellum’) very short, in optical microscope indistinct (see Figs. 46–53View FIGURES 46 – 53). Clavus completely bare ( Figs. 50–53View FIGURES 46 – 53). Vein of corium with distinct, short and fine pale setae ( Figs. 46, 50View FIGURES 46 – 53). Thorax and abdomen ventrally with dense silver pubescence. Antennae and legs with long pale hairs ( Figs. 48–49View FIGURES 46 – 53, 55–56View FIGURES 54 – 56).

Structure. Body elongate ( Figs. 40–43View FIGURES 40 – 45. 40 – 43, 46–47View FIGURES 46 – 53), about 2.3–2.6× longer than wide across humeral angles. Vertex with median sulcus not visible ( Figs. 48–49View FIGURES 46 – 53). Bucculae low, ventrally straight, posteriorly conically produced ( Fig. 55View FIGURES 54 – 56). Labium reaching anterior margin of metacoxae. Antennal segment I stoutest, cylindrical, slightly curved ( Figs. 42–43View FIGURES 40 – 45. 40 – 43, 48–49View FIGURES 46 – 53, 54–55View FIGURES 54 – 56); segment II clavate ( Figs. 42–43View FIGURES 40 – 45. 40 – 43, 54View FIGURES 54 – 56); segments III and IVa terete ( Figs. 4 2–43View FIGURES 4 – 12View FIGURES 1 – 3View FIGURES 13 – 16View FIGURES 17 – 22View FIGURES 23 – 28. 23 – 24View FIGURES 29 – 35View FIGURES 36 – 39View FIGURES 40 – 45. 40 – 43, 54View FIGURES 54 – 56); segment IVb narrowly fusiform ( Figs. 42–43View FIGURES 40 – 45. 40 – 43, 54View FIGURES 54 – 56). Antennal segments from longest to shortest ( Fig. 54View FIGURES 54 – 56): III> IVb ≥ I ≥ II ≥ IVa; segment I usually slightly longer than II (1.14×) and as long as compound eye ( Fig. 55View FIGURES 54 – 56), rarely as long as II; segment IV fully divided into IVa and IVb ( Figs. 54, 56View FIGURES 54 – 56). Pronotum ( Figs. 46–47, 50–51View FIGURES 46 – 53) transverselly hexagonal, anterior collar narrow, middle transverse constriction deeper and humeral angles more arcuately produced in macropterous form (pronotum humeral width 0.69–0.79 mm; Figs. 46, 50View FIGURES 46 – 53) than in brachypterous form (pronotum humeral width 0.59–0.67; Figs. 47, 51View FIGURES 46 – 53). Metanotal elevation trapezoid; in macropterous form longer (2.8× wider than long), posteriorly with wide and deep U-shaped incision ( Fig. 52View FIGURES 46 – 53), in brachypterous form shorter (3.1× wider than long), posteriorly widely truncate with only shallow U-shaped incision ( Fig. 53View FIGURES 46 – 53); disc of metanotal elevation anteriorly depressed with more or less well developed median carina, posteriorly flat ( Figs. 52–53View FIGURES 46 – 53), not turned upwards ( Fig. 54View FIGURES 54 – 56). Metapleuron only slightly gibbose, metathorax therefore not wider than pronotum. Hemelytra of macropterous form reaching ( Figs. 42–43View FIGURES 40 – 45. 40 – 43, 46View FIGURES 46 – 53) or nearly reaching ( Fig. 40View FIGURES 40 – 45. 40 – 43) apex of abdomen. Hemelytra of brachypterous form reaching posterior margin of mediotergite IV (about midlength of abdomen), veins of corium reaching only midlength of mediotergite III ( Figs. 41View FIGURES 40 – 45. 40 – 43, 47View FIGURES 46 – 53). Metafemora and metatibiae of both sexes straight, without long hairs ( Figs. 42–43View FIGURES 40 – 45. 40 – 43, 46View FIGURES 46 – 53, 54View FIGURES 54 – 56). Mediotergites I and II with two thin, submedian, posteriad slightly diverging longitudinal keels. Male genitalia: Pygophore obovate in dorsal view ( Figs. 57–59View FIGURES 57 – 64); proctiger short, posteriorly oval ( Fig. 62View FIGURES 57 – 64), only slightly protruding from pygophore outline posteriorly ( Figs. 57–59View FIGURES 57 – 64); paramere hook-shaped ( Figs. 60–61View FIGURES 57 – 64); aedeagus as in Figs. 63–64View FIGURES 57 – 64.

Measurements (mm). Brachypterous form. Male / female (n = 2 / 1). Body length: 1.51–1.74 / 1.66. Pronotum: anterior width: 0.34–0.36 / 0.36, humeral width: 0.59–0.67 / 0.65. Lengths of antennal segments: I: 0.14 / 0.14, II: 0.12–0.14 / 0.14, III:–/ 0.18, IVa:–/ 0.12, IVb:–/ 0.14. Length of metafemur: 0.44 / 0.5, metatibia: 0.52 / 0.55, metatarsus: 0.18 / –.

Macropterous form. Male / female (n = 3 / 4; median (minimum –maximum)). Body length: 1.66 (1.60–1.68) / 1.80 (1.78–1.82). Pronotum: anterior width: 0.36 (0.34–0.36) / 0.38 (0.36–0.38), humeral width: 0.71 (0.69–0.71) / 0.77 (0.75–0.79). Lengths of antennal segments: I: 0.14 (0.14–0.16) / 0.14 (0.14–0.16), II: 0.12 (0.12–0.14) / 0.13 (0.12–0.14), III: 0.20 (0.20–0.20) / 0.20 (0.20–0.22), IVa: 0.12 (0.12–0.12) / 0.12 (0.10–0.14), IVb: 0.16 (0.16– 0.16) / 0.16 (0.16–0.16). Length of metafemur: 0.50 (0.46–0.50) / 0.48 (0.48–0.50), metatibia: 0.55 (0.53–0.57) / 0.55 (0.55–0.59), metatarsus: 0.16 (0.16–0.16) / 0.16 (0.16–0.20).

Systematic placement and differential diagnosis. The complete subdivision of antennal segment IV into two (IVa and IVb—see Fig. 56View FIGURES 54 – 56) as well as other characters relating it to H. ruficeps  , justify the transfer of Hebrus fulvinervis  to the subgenus Hebrusella  as defined by Poisson (1944).

Hebrus fulvinervis  seems closely related to Euro-Siberian H. ruficeps  , both sharing the dimorphism of hemelytra development and antennal segment I as long as or only slightly longer than segment II ( Jordan 1954, Stichel 1955, Benedek 1969). All African species of the subgenus Hebrusella  are known only in the macropterous form.

However, H. fulvinervis  differs from H. ruficeps  by being slightly larger (macropterous form 1.60–1.82 mm, brachypterous form 1.51–1.74 mm) (in H. ruficeps  1.20–1.70 mm) (e.g. Benedek 1969, Savage 1989); macropterous specimens are more frequent than brachypterous specimens (in H. ruficeps  the macropterous form is rare) ( Benedek 1969), the hemelytra of macropterous form usually reaches the end of the abdomen ( Figs. 42–43View FIGURES 40 – 45. 40 – 43) (in H. ruficeps  the hemelytra of the macropterous form reaches only mediotergite VII) ( Benedek 1969); the shortwinged form is brachypterous with the hemelytra reaching the posterior margin of mediotergite IV ( Fig. 41View FIGURES 40 – 45. 40 – 43) (micropterous in H. ruficeps  , with the hemelytra reaching only to the anterior margin of mediotergite II—Fig. 44) ( Horváth 1929, Benedek 1969); the veins of the corium are yellowish brown ( Figs. 42–43View FIGURES 40 – 45. 40 – 43) (in H. ruficeps  the veins of the corium are dark reddish brown or dark brown—Fig. 45) ( Stichel 1955); and antennal segment IVb is only slightly (1.17–1.33) longer than IVa (in H. ruficeps  antennal segment IVb is more than twice longer than IVa) ( Jordan 1954).

Habitat. According to the locality database of the MMBC, the specimen from Gotse Delchev was collected on the left bank of Mesta River, most probably in a muddy habitat surrounded by Salix  spp. and Alnus glutinosa  (sunny weather, temperature 25–38°C, 10:30–15:00) (I. Malenovský, pers. comm.).

Distribution ( Fig. 65View FIGURES 65). Europe: Bosnia Herzegovina: Ilidža (= Ilidze) [43°49′51″N 18°17′56″E] ( Lindberg 1922, as H. ruficeps  ; Benedek 1970), Sarajevo [43°51′27″N 18°24′45″E], Jablanica (= Jablanitza) [43°39′27″N 17°45′38″E] ( Horváth 1929); Bulgaria: Gotse Delchev [41°34′21″N 23°43′43″E], Sandanski [41°33′34″N 23°16′23″E] (this paper); Romania: Sibiu county: Sibiu (= Cibinium, Nagyszeben) [45°47′54″N 24°07′32″E], Hunedoara county: Râu de Mori (= Malomvíz) [45°29′48″N 22°51′15″E], Suceava county: Crucea (= Cruce) [47°21′03″N 25°36′29″E] ( Horváth 1929). New species for Bulgaria.

HNHM

Hungarian Natural History Museum (Termeszettudomanyi Muzeum)

NMPC

National Museum Prague

MMBC

Moravske Muzeum [Moravian Museum]

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Hebridae

Genus

Hebrus

Loc

Hebrus fulvinervis Horváth, 1929

Kment, Petr, Jindra, Zdeněk & Berchi, Gavril Marius 2016
2016
Loc

Hebrus fulvinervis:

Andersen 1995: 80
Benedek 1970: 43
Benedek 1969: 83
Stichel 1956: 162
Stichel 1955: 150
1956
Loc

fulvinervis

Wagner 1957: 202
Jordan 1954: 603
1954
Loc

Hebrus ruficeps

Lindberg 1922: 16
1922
Loc

Hebrus fulvinervis Horváth, 1929 : 313

Horvath 1929: 313