Stephanocampta masoni ( Yoshimoto, 1990 )

Aquino, Daniel A. & Triapitsyn, Serguei V., 2014, New World Stephanocampta (Hymenoptera: Mymaridae) — descriptions of a new species from Argentina and of the male of S. masoni, Zootaxa 3866 (3), pp. 446-450 : 448-449

Stephanocampta masoni ( Yoshimoto, 1990)

( Figs 4–11 )

Hadromymar masoni Yoshimoto 1990: 86 .

Stephanocampta masoni (Yoshimoto) : Huber & Lin 1999: 40.

Non-type material examined. Costa Rica, Heredia: Estación Biológica La Selva: 50–150 m, iv–v.1993, P. Hanson [1 ♀, UCRC]; 10°43'N 84°02'W, 16.viii.1995, ALAS [1 ♀, UCRC]. 16 km SSE of La Virgen, 10°16'N 84°05'W, 1050–1150 m, INBio-OET-ALAS Transect, ii.2001, M. Sharkey [2 ♂, UCRC].

Taxonomic notes. Yoshimoto (1990) described S. masoni from three females: the holotype from Costa Rica (Reserva Biológica Bosque Nuboso Monteverde, Puntarenas, 1500 m elevation), one paratype from Ecuador (Sacha [Lodge], Napo), and one paratype from Panama (15 km NW of El Hato de Volcán, Chiriquí, 1200 m elevation). The type series is deposited in the Canadian National Collection of Insects, Arachnids and Nematodes, Ottawa, Ontario, Canada ( CNC).

While sorting UCRC Neotropical specimens of Stephanocampta , the second author of this communication noticed that more than one species appeared to be represented by specimens from Costa Rica, and that these did not appear to be conspecific with the S. masoni paratype from Ecuador. John T. Huber ( CNC) was requested to check the type series of S. masoni and measure the length of its holotype (indicated in the original description as 2.0 mm) and the number of funicular segments (originally described as 6-segmented). Dr. Huber informed us that the correct body length of the holotype is 0.455 mm, that the funicle is 7-segmented (F2 is very short, about as long as wide). The body length of a drymounted, critical point-dried non-type female from Estación Biológica La Selva is 0.528 mm. Moreover, the female paratype from Ecuador is not a Stephanocampta but a Camptoptera sp. (J.T. Huber, personal communication). An antenna and a fore wing that were imaged in Yoshimoto (1990, fig. 17 and fig. 61, respectively) are mounted on a slide; these had been removed, along with one hind wing, from the paratype from Panama, which is conspecific with the holotype (J.T. Huber, pers. comm.). The specimen of S. masoni used for the scanning electron micrograph ( Yoshimoto 1990, fig. 131) must have been yet another specimen, which was not part of the type series because it has both pairs of wings.

To facilitate recognition of S. masoni , we illustrate both sexes based on the UCRC non-type specimens from Costa Rica. Images of the female from Estación Biológica La Selva (head: Fig. 4 , antenna: Fig. 5 , mesosoma and metasoma: Fig. 6 , and fore and hind wings: Fig. 7 ) were kindly compared by Dr. Huber with the holotype and the paratype from Panama. We also provide a brief description of the male because it was unknown previously, though Huber & Lin (1999) had mentioned one undetermined male of a Stephanocampta sp.

Description. MALE. Body length of a dry-mounted, critical point-dried specimen 0.3 mm, that of a slide-mounted specimen 0.578 mm. Head dark brown to black, rest of body dark brown; appendages light brown to brown. Antenna ( Fig. 8 ) with scape 5.2× as long as wide; flagellum 10-segmented, F1 about 0.8× length of F3, F2 ring-like (much wider than long). Mesosoma ( Fig. 9 ) longer than metasoma ( Fig. 10 ). Fore wing ( Fig. 11 ) 7.7× as long as wide; hind wing ( Fig. 11 ) about 18× as long as wide. Genitalia ( Fig. 10 ) length 60 µm.

Figures

FIGURES 4 – 7. Stephanocampta masoni ♀ (Estación Biológica La Selva, Heredia, Costa Rica): 4, head (frontal view); 5, antenna; 6, mesosoma and metasoma; 7 fore and hind wings.

FIGURES 8 – 11. Stephanocampta masoni ♂ (16 km SSE of La Virgen, Heredia, Costa Rica): 8, antenna; 9, mesosoma; 10, metasoma; 11, fore and hind wings.