Zadbimyia browni, Jaschhof, Mathias & Jaschhof, Catrin, 2014

Jaschhof, Mathias & Jaschhof, Catrin, 2014, Zadbimyia, a new genus of asynaptine Porricondylinae (Diptera: Cecidomyiidae) with twenty-two new species from the cloud forest of Costa Rica, Zootaxa 3866 (1), pp. 1-29 : 8

Zadbimyia browni sp. n.

Figs 2 A, E, 5A–D

Diagnosis. Zadbimyia browni resembles Z. costaricensis in the parameres having a seemingly two-pointed apex and a single pair of apically curved processes. As a difference, the paramere shoulders are pronounced, almost rectangular in Z. browni ( Fig. 5 B) but smooth in Z. costaricensis ( Fig. 4 B). Also, the gonocoxal emargination in Z. browni is evenly U- rather than V-shaped, and densely setose laterally ( Fig. 5 C).

Other male characters. Body length 1.8 mm. Head. Eye slightly narrowed ventrally, eye bridge 9–10 ommatidia long dorsally. Scape twice as long as pedicel. With 24 flagellomeres. Fourth flagellomere ( Fig. 5 D): neck length 0.4 × node length, neck completely covered with microtrichia. Palpus 4-segmented, as long as length of head, fourth segment about as long as first to third segments combined. Thorax. Anepisternal setae sparse. Legs. Claws with tiny ancillary tooth subapically ( Fig. 2 E). Terminalia. Posterior margin of tergite IX concave medially. Gonocoxites ( Fig. 5 C): setae ventromedially sparse, antGA thick. Gonostylus slightly curved, on basal two thirds parallel-sided, then tapered toward apex, excavated dorsomedially ( Fig. 5 A, C). Ejaculatory apodeme as long as parameres, equally wide even beyond accessory gland ducts ( Fig. 5 B). Parameres ( Fig. 5 B): basal portion subtrapezoidal, with rather long apodemes, apicomedial portion 1.5 times longer than wide.

Etymology. This species is named after Brian V. Brown, a world authority in the systematics of phorid flies and principle investigator of the ZADBI project.

Types. Holotype. Male, Costa Rica, San José province, Moravia, Zurquí de Moravia, 1600 m, 20 Oct. 2012, mercury vapor light trap, ZADBI Project (ZADBI #145, INBio #105253). Paratypes. 1 male, same data as the holotype, pan light trap (ZADBI #147, INBio #105256); 1 male, same locality, 24 Sep. 2012, bucket light trap, ZADBI Project (ZADBI #43, INBio #105056).

Figures

FIGURE 2. Morphology of male Zadbimyia spp. A: basitarsus of foreleg, dorsolateral, of Z. browni. B: head, lateral, of Z. artborkenti. C: ditto, of Z. anniae. D: ditto, of Z. spinapiscis. E: fifth tarsomere of foreleg, lateral, of Z. browni. F: ditto, of Z. aberrans. Scale for A, E – F, 0.05 mm; B – D, 0.1 mm. clp = clypeus, eye br = eye bridge, fd chnl = food channel, lbl = labellum, lbr = labrum, mx prtb = maxillary protuberance, pfr = postfrons, plp = palpus, prfr = prefrons.

FIGURE 4. Zadbimyia costaricensis, male. A: ejaculatory apodeme and parameres, ventral. B: ditto. C: terminalia, ventral. D: fourth flagellomere, lateral. Scale 0.05 mm. ej ap = ejaculatory apodeme, par = paramere, par ap = parameral apodeme, par pr = paramere process.

FIGURE 5. Zadbimyia browni, male. A: gonostylus, ventral. B: ejaculatory apodeme and parameres, ventral. C: terminalia, ventral. D: fourth flagellomere, lateral. Scale 0.05 mm. acc gl dc = accessory gland duct, antGA = anterior portion of gonocoxal apodeme, lat shld = lateral shoulder, vtr em = ventral emargination.