Zadbimyia spinapiscis, 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 : 24-25

Zadbimyia spinapiscis sp. n.

Figs 2 D, 22A–C

Diagnosis. This species is unmistakable for paramere processes that are reminiscent of a fish’s backbone ( Fig. 22 C).

Other male characters. Body length 1.9 mm. Head ( Fig. 2 D). Eye bridge 7–8 ommatidia long dorsally. Scape length 1.5 × pedicel length. With 20 flagellomeres. Fourth flagellomere ( Fig. 22 B): neck as long as node, with microtrichia basally, circumfilum extremely pale, barely visible. Clypeus unsclerotized, asetose. Labrum larger than usual in Zadbimyia . Maxillary protuberance prolonged. Palpus 2-segmented, second segment longer than first, setae very sparse. Terminalia. Gonocoxites ( Fig. 22 A): ventral emargination large, broadly V-shaped, with broad pigmented collar. Gonostylus slender, evenly, strongly curved, markedly tapered toward apex ( Fig. 22 A). Ejaculatory apodeme slightly shorter than parameres, apically tapered ( Fig. 22 C). Parameres ( Fig. 22 C): basal portion subrectangular, processes with 12–14 spinelike lateral extensions pointing laterad, apex with short, sclerotized process.

Remarks. A specimen from Zurquí , listed separately below, is tentatively assigned to this species. It is smaller (1.4 mm); the ejaculatory apodeme is truncate apically; the paramere processes have fewer (6–7) lateral extensions; and the gonostylus is possibly more strongly curved.

Etymology. The species name spinapiscis , a noun in apposition, is the Latin word for the backbone of fish, in reference to the unusual paramere processes.

Types. Holotype. Male, Costa Rica, Cartago province, Paraíso, Tapantí National Park, 1600 m, 2–9 Dec. 2012, Malaise trap, ZADBI Project (ZADBI #331, INBio #105651). Paratype. Male, Costa Rica, Heredia province, 9 km NE Vara Blanca (10°14´N, 84°06´W), 1500 m, 14–21 Feb. 2005, Malaise trap, INBio-OET-ALAS Transect (sample 15/M/04/004).

Other non-type specimen studied. Male, Costa Rica, San José province, Moravia, Zurquí de Moravia, 1600 m, 3–11 Jan. 2013, Malaise trap, ZADBI Project (ZADBI #378, INBio #105705).

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 22. Zadbimyia spinapiscis, male. A: terminalia, ventral. B: fourth flagellomere, lateral, only basal pores of circumfilum shown. C: ejaculatory apodeme and parameres, ventral. Scale 0.05 mm.