Alaptus, Westwood, 1839

Huber, John T., Read, Jennifer D. & Triapitsyn, Serguei V., 2020, Illustrated key to genera and catalogue of Mymaridae (Hymenoptera) in America north of Mexico, Zootaxa 4773 (3), pp. 1-411 : 26-27

publication ID	https://doi.org/10.11646/zootaxa.4773.1.1
publication LSID	lsid:zoobank.org:pub:B1D8D67C-4FDC-477E-872F-E8BCD4D027FB
DOI	https://doi.org/10.5281/zenodo.3845059
persistent identifier	https://treatment.plazi.org/id/038A0765-FFCF-B96A-48D5-FA2B8888FE98
treatment provided by	Plazi (2020-05-12 07:43:02, last updated 2024-11-25 22:15:37)
scientific name	Alaptus
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Treatment

ALAPTUS Westwood, 1839 View in CoL View at ENA

( Figs 31–60 View FIGURE 31 View FIGURES 32–34 View FIGURES 35–38 View FIGURES 39, 40 View FIGURES 41, 42 View FIGURES 43–48 View FIGURES 49–54 View FIGURES 55–60 )

Alaptus Westwood, 1839: 79 View in CoL . Type species: Alaptus minimus Westwood, 1839 View in CoL , by monotypy.

Parvulinus Mercet, 1912: 332 View in CoL . Type species: Parvulinus auranti Mercet, 1912 , by monotypy. Synonymy by Girault, 1913 [127]: 221.

Metalaptus Malenotti, 1917: 339 View in CoL . Type species: Metalaptus torquatus Malenotti, 1917 , by monotypy. Synonymy by Girault 1917 [330]: 1.

Diagnosis. Body length 205–555 μm; 210–580 μm in Triapitsyn (2017). Antenna with funicle 5-segmented ( Figs 35, 36 View FIGURES 35–38 ), exceptionally with a minute additional segment between fu 1 and fu 2 ( Fig. 33 View FIGURES 32–34 ); supraorbital trabecula with alternating sclerotized and unsclerotized sections ( Figs 32, 34 View FIGURES 32–34 , 41 View FIGURES 41, 42 ); mandible with 2 teeth ( Figs 47, 48 View FIGURES 43–48 ); head posteriorly with curved horizontal sulcus medially above foramen ( Fig. 44 View FIGURES 43–48 ); fore wing posterior margin with an abrupt, recurved notch behind venation and, thereafter, posterior margin almost straight and gradually diverging from anterior margin ( Fig. 39 View FIGURES 39, 40 ) almost to wing apex; petiole much wider than long and almost indistinguishable from propodeum or gt 1 ( Figs 49, 50, 54 View FIGURES 49–54 ); mesophragma projecting into gaster; gt 1 longitudinally divided medially ( Fig. 40 View FIGURES 39, 40 ). Male with flagellum 8-segmented ( Fig. 37 View FIGURES 35–38 ).

Discussion. Alaptus belongs to the Alaptus group of genera, together with Callodicopus , Dicopomorpha , Dico- pus and Litus . Its species are among the smallest Mymaridae in the Nearctic; only some Camptoptera , Dicopus and Dicopomorpha species are as small.

Nearctic hosts. Psocoptera. Despite the numerous records from species of Hemiptera (Coccoidea) catalogued by Peck (1951, 1963), Thompson (1958), Herting (1972), and Noyes (2019) additional, careful rearings are needed to be sure of the associations. Triapitsyn (2017) listed only Psocoptera as reliable host records.

Important reference. Triapitsyn (2017).

References

Herting, B. (1972) Homoptera. In: A catalogue of parasites and predators of terrestrial arthropods. Section A. Host or Prey / Enemy. Vol. 1. Commonwealth Agricultural Bureaux, Slough, 210 pp.

Malenotti, E. (1917) Metalaptus torquatus n. gen. e n. specie di calcidite. Redia, 12, 339 - 341, pl. V.

Mercet, R. G. (1912) Mimaridos nuevos de Espana. Boletin de la Real Sociedad Espanola de Historia Natural, 12, 331 - 337.

Noyes, J. S. (2019) Universal Chalcidoidea Database. World Wide Web electronic publication. [https: // www. nhm. ac. uk / our-science / data / chalcidoids / database /]

Peck, O. (1951) Superfamily Chalcidoidea. In: Muesebeck, C. F. W., Krombein, K. V. & Townes, H. K. (Eds.), Hymenoptera of America north of Mexico-synoptic catalog. United States Department of Agriculture, Agriculture Monograph, 2, pp. 410 - 594.

Peck, O. (1963) A catalogue of the Nearctic Chalcidoidea (Insecta: Hymenoptera). Canadian Entomologist, Supplement 30, 1 - 1092.

Thompson, W. R. (1958) A catalogue of the parasites and predators of insect pests. Section 2. Host parasite Catalogue, Part 5, Hosts of the Hymenoptera (Microgasteridae to Trigonalidae), Lepidoptera and Strepsiptera. Commonwealth Institute of Biological Control, Ottawa. pp. 562 - 698.

Westwood, J. O. (1839) Appendix: Synopsis of the genera of British insects. In: Introduction to the modern classification of insects; founded on the natural habits and corresponding organisation of the different families. Vol. 2. Longman, Orme, Brown, Green, and Longmans, London, pp. 1 - 158 pp.

Figures

FIGURE 31. Alaptus sp., habitus. Canada, Quebec, Cloridorme, 49°11.22'N 64°51.28'W, 26.vii.2008, fallow field, H. Goulet, C. Boudreault, A. Badiss. Scale bar=500 μm.

FIGURES 32–34. Alaptus spp. 32a, head, anterior; 32b, head, anterior (internal), showing ocular apodeme; 33, antenna (note small additional segment between fu2 and fu3); 34, head, anterodorsal. Scale bars=100 μm.

FIGURES 35–38. Alaptus iceryae Girault. 35, left antenna; 36, right antenna; 37, male antenna; 38, prosoma + fore leg. Scale bars=100 μm.

FIGURES 39, 40. Alaptus sp., male. 40, wings; 41, mesosoma (except prothorax) + metasoma, dorsal. Scale bars=100 μm.

FIGURES 41, 42. 41, Alaptus sp. body, dorsal, showing mesophragma and male genitalia. 42, Alaptus klonx Triapitsyn, body, lateral. Scale bars=100 μm.

FIGURES 43–48. Alaptus sp., head. 43, anterior; 44, posterior; 45, lateral; 46, dorsal; 47, ventral, 48, mouthparts. Scale bars=20 μm.

FIGURES 49–54. Alaptus sp., mesosoma. 49, dorsal; 50, dorsal (different specimen); 51, lateral; 52, ventral; 53 anteroventral; 54, scutellum–gt1. Scale bars=20 μm.

FIGURES 55–60. Alaptus sp., metasoma. 55, dorsal; 56, ventral; 57, lateral; 58, apex of gaster, male dorsal (genitalia exserted); 59, apex of gaster, male, lateral; 60, apex of gaster, male, ventral. Scale bars=20 μm.

FIGURES 35–38. Alaptus iceryae Girault. 35, left antenna; 36, right antenna; 37, male antenna; 38, prosoma + fore leg. Scale bars=100 μm.

FIGURES 41, 42. 41, Alaptus sp. body, dorsal, showing mesophragma and male genitalia. 42, Alaptus klonx Triapitsyn, body, lateral. Scale bars=100 μm.

FIGURES 43–48. Alaptus sp., head. 43, anterior; 44, posterior; 45, lateral; 46, dorsal; 47, ventral, 48, mouthparts. Scale bars=20 μm.

FIGURES 39, 40. Alaptus sp., male. 40, wings; 41, mesosoma (except prothorax) + metasoma, dorsal. Scale bars=100 μm.

FIGURES 49–54. Alaptus sp., mesosoma. 49, dorsal; 50, dorsal (different specimen); 51, lateral; 52, ventral; 53 anteroventral; 54, scutellum–gt1. Scale bars=20 μm.