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The morphology of the preimaginal stages of Squamapion elongatum (Germar, 1817) (Coleoptera, Curculionoidea, Apionidae) and notes on its biology.

Łętowski J, Pawlęga K, Ścibior R, Rojek K - Zookeys (2015)

Bottom Line: Data on the morphology of the egg, mature larva (L3) and pupa of Squamapion elongatum (Germar, 1817) are presented.The development cycle of this species lasts 51-54 days: a 12-day egg period, a 30-day larval period, and a 12-day pupal period, on average.The larvae are attacked by parasitic hymenopterans of the superfamily Chalcidoidea.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Zoology, Animal Ecology and Wildlife Management,University of Life Sciences in Lublin, Lublin, Poland.

ABSTRACT
Data on the morphology of the egg, mature larva (L3) and pupa of Squamapion elongatum (Germar, 1817) are presented. The development cycle of this species lasts 51-54 days: a 12-day egg period, a 30-day larval period, and a 12-day pupal period, on average. The larvae are attacked by parasitic hymenopterans of the superfamily Chalcidoidea.

No MeSH data available.


Related in: MedlinePlus

Pupa, ventral view: as apical s. sls sublateral s. vs vertical setae rs rostral s. fes femoral s. pc urogomphi.
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Figure 7: Pupa, ventral view: as apical s. sls sublateral s. vs vertical setae rs rostral s. fes femoral s. pc urogomphi.

Mentions: Head (ventral view). Rostrum reaching ventrite V, with 1 distinct seta (rs) at mid-length, in front of the antennal insertion. Antennae relatively long, club with conical papillae. Antennae sub-parallel to protibia. Frons with 1 pair of setae (vs), about as long as rostral setae, situated at the level of the hind margin of the eyes (Figs 6, 7). Pronotum length greater than width, with 5 pairs of setae (as1, as2, sls, pls1, pls2) (Figs 6–8). Setae as1and as2 long and located at the apical margin. Setae sls a bit shorter, located at the external margin in the middle of the edge. Setae pls1and pls2 as long as sls, and located close to the back margin. Mesonotum short and metanotum two times longer than mesonotum. Mesonotum with clearly visible scutellar shield, metanotum with 3 pairs of short setae, medially located. All femora with 1 long, thin seta (fes1-3) located apically (Figs 6–8). Abdomen. Abdominal tergites I-III with 7 pairs of setae arranged in two rows – 2 closer to the upper edge of the segment, nearly at the external margin, 5 closer to the base. Tergites IV-VI with 5 pairs of setae arranged in two rows – 1 closer to the upper edge of the segment, nearly at the external margin, 4 closer to the base. Tergite VII with 3 pairs of setae arranged in one row, VIII with one pair. Segment IX without setae. Urogomphi (pseudocerci) (pc) on abdominal segment IX, laterally parted, crescent-shaped, narrow. Segment X reduced (Figs 6–8, 14). Spiracles on abdominal segments I-VI functional, well visible, positioned longitudinally on pleura (Fig. 6). Gonotheca visibly divided in female, single in male.


The morphology of the preimaginal stages of Squamapion elongatum (Germar, 1817) (Coleoptera, Curculionoidea, Apionidae) and notes on its biology.

Łętowski J, Pawlęga K, Ścibior R, Rojek K - Zookeys (2015)

Pupa, ventral view: as apical s. sls sublateral s. vs vertical setae rs rostral s. fes femoral s. pc urogomphi.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4591605&req=5

Figure 7: Pupa, ventral view: as apical s. sls sublateral s. vs vertical setae rs rostral s. fes femoral s. pc urogomphi.
Mentions: Head (ventral view). Rostrum reaching ventrite V, with 1 distinct seta (rs) at mid-length, in front of the antennal insertion. Antennae relatively long, club with conical papillae. Antennae sub-parallel to protibia. Frons with 1 pair of setae (vs), about as long as rostral setae, situated at the level of the hind margin of the eyes (Figs 6, 7). Pronotum length greater than width, with 5 pairs of setae (as1, as2, sls, pls1, pls2) (Figs 6–8). Setae as1and as2 long and located at the apical margin. Setae sls a bit shorter, located at the external margin in the middle of the edge. Setae pls1and pls2 as long as sls, and located close to the back margin. Mesonotum short and metanotum two times longer than mesonotum. Mesonotum with clearly visible scutellar shield, metanotum with 3 pairs of short setae, medially located. All femora with 1 long, thin seta (fes1-3) located apically (Figs 6–8). Abdomen. Abdominal tergites I-III with 7 pairs of setae arranged in two rows – 2 closer to the upper edge of the segment, nearly at the external margin, 5 closer to the base. Tergites IV-VI with 5 pairs of setae arranged in two rows – 1 closer to the upper edge of the segment, nearly at the external margin, 4 closer to the base. Tergite VII with 3 pairs of setae arranged in one row, VIII with one pair. Segment IX without setae. Urogomphi (pseudocerci) (pc) on abdominal segment IX, laterally parted, crescent-shaped, narrow. Segment X reduced (Figs 6–8, 14). Spiracles on abdominal segments I-VI functional, well visible, positioned longitudinally on pleura (Fig. 6). Gonotheca visibly divided in female, single in male.

Bottom Line: Data on the morphology of the egg, mature larva (L3) and pupa of Squamapion elongatum (Germar, 1817) are presented.The development cycle of this species lasts 51-54 days: a 12-day egg period, a 30-day larval period, and a 12-day pupal period, on average.The larvae are attacked by parasitic hymenopterans of the superfamily Chalcidoidea.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Zoology, Animal Ecology and Wildlife Management,University of Life Sciences in Lublin, Lublin, Poland.

ABSTRACT
Data on the morphology of the egg, mature larva (L3) and pupa of Squamapion elongatum (Germar, 1817) are presented. The development cycle of this species lasts 51-54 days: a 12-day egg period, a 30-day larval period, and a 12-day pupal period, on average. The larvae are attacked by parasitic hymenopterans of the superfamily Chalcidoidea.

No MeSH data available.


Related in: MedlinePlus