Stemmocrypta antennata
| Stemmocrypta antennata | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Stemmocryptidae | ||||||||||||
| Štys , 1983 | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Stem crypt | ||||||||||||
| Štys , 1983 | ||||||||||||
| Scientific name of the species | ||||||||||||
| Stemmocrypta antennata | ||||||||||||
| Štys , 1983 |
Stemmocrypta antennata is the only described species of the Stemmocryptidae familywithin the bedbugs suborder Dipsocoromorpha .
features
The bugs are 2.0 to 2.4 millimeters long and have an elongated, only slightly sclerotized , soft body. They are light brown in color and are somewhat reminiscent of flattened, weakly sclerotized representatives of the Cimicoidea .
Males and females essentially do not differ in their appearance. They have fully developed (macroptere) wings, their head is directed forward. The point eyes ( Ocelli ) are behind the compound eyes , where they are directly adjacent to their rear edge . The gula is long. The second part of the antennae is almost as long as the third and fourth, although these two are only slightly thinner and do not have long, thin, erect setae . The forward-facing labium is about the same length as the head. Its first link is very short, the second short, the third and fourth relatively longer. The pronotum is simply built. It is almost trapezoidal and has no dorsal collar. The front wings are membranous and have a receding wing vein . As with the Enicocephalomorpha and Discoridae , the medial interruption runs in front of the radial artery . The clavus is not demarcated. The forewings lie freely one above the other in the resting position, the clavies not adjoining each other and thus forming a seam. The legs are short and have thickened tarsi . There are three tarsal limbs on all legs, with the females' front legs only having two tarsal limbs. The pretarsus has two long, thread-like parempodia and a dorsal and ventral arolium . The scent glands on the metathorax are unpaired and have a single opening. There is an evaporation area. The stigma on the first abdominal segment lies in the membrane behind the metapostnotum. The spiracles on the second to seventh abdominal segments lie on the dorsal laterotergites. The adult animals show no remains of the dorsal abdominal scent gland openings of the nymphs . The eighth abdominal segment of the males has appendage-like laterotergites. The pygophores (the extension of the ninth abdomen segment), the ninth laterotergite and the paramers are asymmetrical. The phallus is complex. In females, the seventh sternum forms the subgenital plate, the ovipositor is plate-shaped and a spermatheca that is modified in its structure is formed.
The species has an unusual appearance and combines features of the Dipsocoromorpha, such as the asymmetrical genitalia of the males, the spermatheca, the dorsal and ventral arolium and the tegminal forewings with features of the cimicoidea, such as the body shape and the structure of the antennae.
Occurrence and way of life
The species is only known from New Guinea , where individuals were attracted in traps with UV light and caught from the litter with picking funnels . The animals are probably searching hunters. Their short, fat legs suggest they cannot hop.
supporting documents
Individual evidence
- ↑ a b c d e R. T. Schuh, JA Slater: True Bugs of the World (Hemiptera: Heteroptera). Classification and Natural History. Cornell University Press, Ithaca, New York 1995, pp. 82f.
literature
- RT Schuh, JA Slater: True Bugs of the World (Hemiptera: Heteroptera). Classification and Natural History. Cornell University Press, Ithaca, New York 1995.