Saileriolidae

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Saileriolidae
Systematics
Class : Insects (Insecta)
Order : Schnabelkerfe (Hemiptera)
Subordination : Bed bugs (heteroptera)
Partial order : Pentatomomorpha
Superfamily : Pentatomoidea
Family : Saileriolidae
Scientific name
Saileriolidae
China & Slater , 1956

The Saileriolidae are a family of bugs (Heteroptera) within the suborder Pentatomomorpha . According to a study of the Pentatomoidea from 2008 based on morphological features and DNA sequences, it was shown that the group, which has long been considered a subfamily of the Urostylididae , has family status.

features

The bugs hardly reach more than four millimeters in length. Your head is pointed strongly downwards. The compound eyes are near the base of the head. The third part of the antennae is very short. The legs are simple and not tapered. The hips ( coxes ) of the middle and rear legs are more than twice their length apart. The first and third tarsal segments are each longer than the second. The scutellum is swollen in front. The hemielytres' corium is semi-transparent. Its point reaches behind the point of the abdomen. On the third and fourth sternum of the abdomen, the Trichobothria are apparently absent in all species . The odor gland opening on the metathorax is slit-shaped and has neither a peritrema nor an area of ​​evaporation.

Occurrence

The range of the family includes the south and east of Asia.

Way of life

Little is known about the group's way of life. Several nymph stages of Ruckesona vitrella were found on a palm tree at the water's edge. This suggests that this undetermined species of palm was the host . Chloroplasts have been found in the digestive tract of both adults and nymphs, suggesting that they do not only feed on the sap of the host plants.

Taxonomy and systematics

For a long time the group was considered a subfamily of the Urostylididae . Although it was and is considered certain that the two groups are the most primitive of the superfamily, the placement of the Saileriolidae within the Urostylididae appeared problematic based on the morphological differences. According to a study by the Pentatomoidea from 2008, based on morphological features and DNA sequences, it was found that both groups should be assigned family status in order to maintain the monophyly of the taxa. The Urostylididae are the least developed group of the Pentatomoidea and are in a sister group relationship to all other families , the Saileriolidae in turn are in a sister group relationship to the remaining groups of the superfamily. This is due to the crack on the seventh sternite in the females and the two pairs or at least two individual trichobotria on the side of the urosternite of the fifth to seventh abdominal segment, the latter also being present in the Amnestinae .

The following genera are assigned to the family:

supporting documents

Individual evidence

  1. ↑ a b Jocelia Grazia, Randall T. Schuh & Ward C. Wheeler: Phylogenetic relationships of family groups in Pentatomoidea based on morphology and DNA sequences (Insecta: Heteroptera). Cladistics 24 (2008), pp. 932-976.
  2. ↑ a b c d R. T. Schuh, JA Slater: True Bugs of the World (Hemiptera: Heteroptera). Classification and Natural History. Cornell University Press, Ithaca, New York 1995, pp. 245ff.

literature

  • RT Schuh, JA Slater: True Bugs of the World (Hemiptera: Heteroptera). Classification and Natural History. Cornell University Press, Ithaca, New York 1995.