New genera and species of Braconidae, mostly Malayan
D.T. Fullaway, entomologist at the Hawaiian Board of Agriculture and Forestry, published this taxonomic paper in 1919 describing three new genera and twenty-four new species of Braconidae (parasitic wasps) drawn from a collection assembled in the Malay Archipelago and surrounding regions between 1906 and 1911. The specimens originated from a systematic search for natural enemies of the cane borer (Rhabdocnemis obscura) conducted under the auspices of the Hawaiian Sugar Planters’ Experiment Station, with field work carried out by Frederick Muir and the late Frank W. Terry.
Summary
The paper is a straightforward taxonomic treatment organized by subfamily, covering eight of the recognized braconid subfamilies: Brachoninae, Doryctinae, Rhogadinae, Sigalphinae, Cheloninae, Agathinae, Cardiochilinae, and Opiinae. Each new species is described in full morphological detail—head, thorax, abdomen, legs, and wing venation—with emphasis on diagnostic characters such as ocellar arrangement, antennal segmentation, abdominal sculpturing, and the configuration of the cubital and discoidal cells. The three new genera (Heterogamoides, Muriella, and Laminitarsus) are each established with a brief generic diagnosis distinguishing them from their nearest relatives.
The geographic spread of the material reflects the itinerant nature of the original collecting campaign: specimens come from the Malay Peninsula, Java (Roban, Buitenzorg), Amboina, Borneo, Celebes, Ceram, Fiji, Papua (Laloki), Hong Kong, and the Philippine Islands (Los Banos). Most species are described from single specimens, a common limitation of the period, though a few—Platybracon distinctus (five specimens), Austroopius amboinensis (five), and Euagathis hongkongensis (three)—are based on slightly larger series. The types remain in the H.S.P.A. Experiment Station collections in Honolulu (p. 39).
The work sits within the broader early-twentieth-century programme of biological pest control, in which parasitoid wasps were sought as agents against agricultural pests of sugar cane. Fullaway’s descriptions, while taxonomic in form, implicitly serve that applied purpose by documenting the diversity of potential biocontrol agents available in the region.
Key Findings
- Three new genera are erected: Heterogamoides (type muirii), Muriella (type concisa), and Laminitarsus (type muirii) (pp. 43, 47, 57).
- Twenty-four new species are described across eight subfamilies, with the Agathinae yielding the largest number (eight species across four genera: Beognatha, Euagathis, Biroia, Braunsia, Microdus) (pp. 49–57).
- The collecting campaign spanned 1906–1911 and covered at least ten distinct localities across the Malay Archipelago, the Philippines, and the Pacific (pp. 39–59).
- Heterogamoides muirii was bred from spiny lepidopterous pupae at Buitenzorg in July 1907, providing one of the few host-association records in the paper (p. 44).
- Laminitarsus muirii is distinguished by a broad leaf-like expansion on the inner side of the metatarsus and flattened, apically expanded tibiae—characters giving the genus its name (p. 57).
- The majority of species are described from single specimens; only Platybracon distinctus (4♀ + 1♂) and Austroopius amboinensis (1♀ + 4♂) are based on multiple individuals of both or one sex (pp. 39, 58–59).
Conclusion
Fullaway’s paper documents a substantial increment to the known braconid fauna of the Malay region and adjacent islands, establishing three new genera and twenty-four species from a single applied-entomology collection. Its primary historical value lies in recording the biodiversity encountered during the Hawaiian Sugar Planters’ biological control programme and in preserving type material in a single institutional repository, thereby anchoring the nomenclature for subsequent regional faunal work.
Context
- The collection was assembled for the Hawaiian Sugar Planters’ Experiment Station as part of a biological control programme targeting the cane borer; Fullaway’s role was that of a specialist taxonomist processing the braconid component of a broader entomological survey (p. 39).
- The paper draws exclusively on the Muir–Terry field collection (1906–1911); no other archival or literature sources are cited, and the work represents a primary description of material rather than a synthesis of existing knowledge.