Jordanita budensis

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Jordanita budensis
Jordanita budensis, male

Jordanita budensis , male

Systematics
Class : Insects (Insecta)
Order : Butterflies (Lepidoptera)
Family : Ram (Zygaenidae)
Subfamily : Green ram (Procridinae)
Genre : Jordanita
Type : Jordanita budensis
Scientific name
Jordanita budensis
( Speyer & Speyer , 1858)

Jordanita budensis is a butterfly fromthe ram family (Zygaenidae).

features

The moths reach a forewing length of 12.5 to 15.5 millimeters in the males and 8.0 to 11.0 millimeters in the females. The head, thorax , legs and abdomen shimmer green, gold-green or bluish green. The forehead is about 1.5 times as wide as the compound eyes . The antennae are short and have a bluish shimmer. They have a slim shaft and consist of 31 to 35 segments. The feelers are comb-shaped. The wings are translucent and only sparsely provided with narrow scales . The upper side of the forewing shimmers green, gold-green or bluish green. The upper side of the hind wing and the underside of the wing are light gray.

In the male genitalia, the uncus is short and the vinculum is narrow. The valves are longer dorsally , the ventral part is provided with a square extension distally. The aedeagus is small and narrow, slightly curved and has two almost straight, slender cornuti. The 8th sternite covers the entire segment and extends beyond the posterior margin.

In the female genitalia, the ostium is narrow and rounded. The proximal part of the ductus bursae is wide and long. It is well sclerotized, the proximal area has a smooth surface and a short ridged translucent area. The distal area of ​​the ductus bursae is straight and almost as wide as the corpus bursae. In some specimens, the ductus bursae process may be missing, but a sclerotized spot is still visible at the point where the process otherwise attaches.

The egg is light yellow.

The head and legs of the caterpillar are black, on the prothoracic segment, which is also black, there are white secondary back lines. The body is yellowish brown and drawn with reddish purple back and side lines. The warts are reddish brown, the belly is yellow. The body of the caterpillar is provided with tiny single- or multi-spined tubercles that appear as black dots when viewed with the naked eye.

The doll is light brown and shiny. The cocoon is very thin and white.

Similar species

In the range there are several species with broad wings and pointed antennae that resemble J. budensis :

  • Eastern Europe: J. budensis occurs here together with Jordanita subsolana , Jordanita globulariae and Jordanita notata .
  • Turkey: J. budensis occurs together with Jordanita subsolana , Jordanita globulariae , Jordanita notata , Jordanita paupera , Jordanita volgensis , Jordanita hector (only in southern Turkey) and Jordanita kurdica (only in eastern Turkey). A reliable differentiation of the species is only possible through a genital examination.

J. budensis flies very early in the year, but mostly a month earlier than the similar species. With less than 36 segments, it has the shortest antennae and very translucent wings.

Jordanita subsolana is more densely scaled and darker, the shine on the body and the upper side of the forewing is only weakly pronounced and is usually completely absent. In the males, the 8th abdominal sternite covers the entire segment, but does not protrude beyond the posterior margin. In females, the 7th abdominal asterisk resembles that of J. budensis .

Jordanita globulariae and Jordanita vartianae are more densely scaled and the body and the fore wing tops have a strong green or greenish tinge. The 8th abdominal sternite covers only the posterior half of the segment, so that the ventral processes of the valves, which extend slightly beyond the posterior margin, are visible. The asymmetrical ostium is clearly visible in the females.

In jordanita hispanica the front wing tops shimmer characteristic yellowish-green, the Fühlerkämmung is significantly shorter. The 8th abdominal sternite covers the entire segment, but does not extend beyond the posterior margin. In females, the 7th sternite resembles that of Jordanita budensis .

Jordanita notata has slightly narrower wings, the comb of the antennae is very short. In the males, the narrow 7th abdominal sternite extends to the rear end of the segment.

distribution

Jordanita budensis has a disjoint range with isolated populations. The species occurs in central Spain , in the south of France , Italy , in the east of Austria and in Hungary , on the Balkan peninsula , in Greece , in the Ukraine including the Crimean peninsula , in the European part of southern Russia , in the Caucasus and in Transcaucasia , in Turkey , in southern Siberia , Mongolia and the Amur region . Steppe biotopes are settled in the plains and in the mountains. In the west of the Alps , the species rises to an altitude of 2,400 meters.

biology

The females lay the eggs individually or in short rows on the food plants around noon. In Western Europe the caterpillars develop on panicley knapweed ( Centaurea paniculata ), in Central Europe on felt knapweed ( Centaurea triumfettii ) and on the Crimean peninsula on fine-leaved yarrow ( Achillea setacea ). The caterpillars pupate in the soil under the food plant in a thin cocoon. The moths hatch early in the morning and fly during the hottest time of the day. The flight time varies depending on the altitude, it begins in the flatlands at the end of March and extends to July in mountain regions.

swell

Individual evidence

  1. ↑ a b c d C. M. Naumann, WG Tremewan: The Western Palaearctic Zygaenidae . 1st edition. Apollo Books, Stenstrup 1999, ISBN 87-88757-15-3 , pp. 116 (English).

literature

  • CM Naumann, WG Tremewan: The Western Palaearctic Zygaenidae . 1st edition. Apollo Books, Stenstrup 1999, ISBN 87-88757-15-3 (English).

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