Leptotrema van Achterberg, 1988

Peris-Felipo, Francisco Javier, Santa, Fernando, van Achterberg, Cornelis & Belokobylskij, Sergey A., 2025, Review of the genera and subgenera of the subtribe Aspilotina (Hymenoptera, Braconidae, Alysiinae), with a new illustrated key, ZooKeys 1229, pp. 133-200 : 133-200

publication ID	https://doi.org/10.3897/zookeys.1229.142489
publication LSID	lsid:zoobank.org:pub:9EE07D11-A890-4009-BDA7-92ABF8540512
DOI	https://doi.org/10.5281/zenodo.14932158
persistent identifier	https://treatment.plazi.org/id/B795D419-168B-50CB-8D97-5474F4202BBC
treatment provided by	ZooKeys by Pensoft (2025-02-26 15:25:51, last updated 2025-02-27 00:40:52)
scientific name	Leptotrema van Achterberg, 1988
status

Treatment

Genus Leptotrema van Achterberg, 1988

Leptotrema van Achterberg, 1988: 42; Chen and Wu 1994: 94; Belokobylskij 1998 a: 219; Fischer 2002: 102; Yu et al. 2016.

Type species.

Aspilota dentifemur Stelfox, 1943 , by original designation (Figs 22 View Figure 22 , 23 View Figure 23 ).

Material examined.

( Leptotrema dentifemur ) Denmark: • ♀, Stegelykke VG , 8–15. vii. 1991 (Munk leg.) ( PFEC) . The Netherlands: • ♀, Putten (Gld.), Malaise trap, 26. ix – 2. x. 1973 (J. v. d. Vecht leg.) ( RMNH) .

Diagnosis.

Mandible small, simple, tridentate, often with upper (first) tooth diminished with respect to lower (third) tooth. Paraclypeal fovea short, not reaching more than half distance between clypeus and inner margin of eyes. Mesoscutum with or without mesoscutal pit; notauli usually present only in anterior part of mesoscutum; precoxal sulcus usually present, propodeum with different types of sculpture and sometimes with longitudinal and / or transverse carinae, rarely entirely smooth. Fore femur has a distinct apomorphic character, viz., the presence of a large obtuse tooth (flange) or two or three small teeth. In fore wing, marginal cell never shortened; vein r originating from basal quarter of pterostigma; vein 2 - SR usually present and distinctly sclerotised; veins m-cu and cu-a postfurcal; first subdiscal cell always closed postero-apically by vein CU 1 a. Metasoma of ♀ more or less distinctly compressed laterally. Ovipositor sheath usually not longer than metasoma.

Remarks.

Only three rare Leptotrema species are known from the Palaearctic, Oriental and Australasian regions, L. bovefemora (Bhat, 1979) , L. dentifemur (Stelfox, 1943) and L. wilhelmense Braet & van Achterberg, 2014 . Wharton (2002) treated Leptotrema only as subgenus of Dinotrema , but some other experts ( Fischer 2002; Belokobylskij and Tobias 2007; Braet and van Achterberg 2014) preferred to consider it as a valid genus based on its unique apomorphic character: the presence of the ventral tooth or teeth of the fore tibia. The study based on the main morphological characters show that Leptotrema deserves generic status.

References

Belokobylskij SA (1998 a) 9. Alysiinae (Alysiini). In: Lehr PA (Ed.) Key to insects of the Russian Far East. Vol. 4. Neuropteroidea, Mecoptera, Hymenoptera. Pt 3. Dal’nauka, Vladivostok, 162–298. [In Russian]

Belokobylskij SA, Tobias VI (2007) Fam. Braconidae. Subfam. Alysiinae. Group of genera closed to Aspilota. In: Lelej AS (Ed.) Key to the Insects of the Russian Far East. Neuropteroidea, Mecoptera, Hymenoptera. Vol. IV, pt 5. Dal’nauka, Vladivostok, 9–133. [In Russian]

Braet Y, van Achterberg C (2014) A new genus and two new species of Alysiinae (Hymenoptera: Braconidae) from Papua New Guinea. Zootaxa 3869 (2): 189-197. https://doi.org/10.11646/zootaxa.3869.2.9

Braet Y, van Achterberg C (2014) A new genus and two new species of Alysiinae (Hymenoptera: Braconidae) from Papua New Guinea. Zootaxa 3869 (2): 189–197. https://doi.org/10.11646/zootaxa.3869.2.9

Chen JH, Wu ZS (1994) The Alysiini of China (Hymenoptera: Braconidae: Alysiinae). China Agricultural Press, Fuzhou, 218 pp. [In Chinese, with English summary]

Fischer M (2002) Übersicht über die Gattungen der Aspilota - Genusgruppe mit Neubeschreibung von Grandilota nov. gen. sowie Redeskription von Regetus Papp (Hymenoptera, Braconidae, Alysiinae). Zeitschrift der Arbeitsgemeinschaft Oesterreichischer Entomologen 54 (3–4): 99–108.

van Achterberg C (1988) The genera of the Aspilota - group and some descriptions of fungicolous Alysiini from the Netherlands (Hymenoptera: Braconidae: Alysiinae). Zoologische Verhandelingen Leiden 247: 1-88.

Wharton RA (2002) Revision of the Australian Alysiini (Hymenoptera: Braconidae). Invertebrate Systematics 16: 7–105. https://doi.org/10.1071/IT01012

Yu DS, van Achterberg C, Horstmann K (2016) Taxapad 2016, Ichneumonoidea 2015. Database on flash-drive. Ottawa, Ontario.

Figures

Figure 22. Leptotrema dentifemur (Stelfox, 1943) (female) A habitus, lateral view B head and mesosoma, lateral view C mandible D antenna E head, front view F head and mesonotum, dorsal view.

Figure 23. Leptotrema dentifemur (Stelfox, 1943) (female) A propodeum B fore femur, lateral view C legs, metasoma and ovipositor, lateral view D first metasomal tergite, dorsal view E fore and hind wings.