Calycomyza rolandrae, Monteiro & Esposito, 2017

Monteiro, Nilton Juvencio Santiago & Esposito, Maria Cristina, 2017, New species and new records of Calycomyza Hendel (Diptera: Agromyzidae) in Brazil, Zootaxa 4338 (3) : -

Calycomyza rolandrae sp. nov.

Fig. 1–11

Description. Wing length 2mm in male and 2.1mm in female. Penultimate section of CuA1 0.57 times the length of the last section; transversal vein r-m situated at middle level of the discal cell. Gena-to-eye ratio 0.14. Acrostichal setae in six rows; dorsocentral setae 0+3 (anterior only a little longer than acrostichals).

Coloration. Ocellar triangle brown; fronto-orbital plate grayish to lower orbital seta, distinctly yellow below; face grayish; frons grayish in upper half, distinctly yellow below; escape brown; pedicel predominantly brown, yellow in basal border; first flagellomere predominantly brown, yellow apically; palpus brown; gena yellow. Mesonotum brown; notopleuron yellow; anepisternum brown with border yellow; anepimeron brown with border yellow; legs brown with apex of femur and base of tibia yellow in the fore leg. Calypter grayish; fringe pale brown. Halteres white.

Male genitalia ( Fig. 1 to 5). Epandrium with 10 to 15 spines at hind corner; surstylus subtriangular with 9 to 12 spines and some slender setae apically; hypandrium V-shaped, without apodeme; basiphallus membranous; mesophallus slender with two plate-like extensions basally and distal end bent ventrally in lateral view; distiphallus conic with two medial processes long, fused and about the same length as the distiphallus; ejaculatory apodeme short, enlarged apically.

Female genitalia ( Fig. 6 to 10). Ninth abdominal sternite V-shaped, wider apically and with many small sensilla; three pairs of marginal setae equidistant from each other, the apical pair of marginal setae twice the length of the others; ninth abdominal tergite slender, ending before the apex of the ninth abdominal sternite and with a pair of long setae apically; cercus oval with four tactile sensilla; spermatheca rounded with spermatic duct widely in apex; eggs guide subtriangular; ventral receptacle T-shaped.

Host-plants. Rolandra fruticosa (L.) Kuntze ( Asteraceae ). Larvae forming blotch-like mines on the adaxial leaf surface ( Fig. 11 ).

Type material. Holotype BRAZIL, Pará, Belém: ♂, Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), 1º26’06.4’’S, 48º26’58.1’’W, 25-IV-94, mining leaves of Rolandra fruticosa, M.C. Esposito [collector] . Paratypes: BRAZIL, Pará, Belém: ♂, Universidade Federal Rural da Amazônia ( UFRA), 1º27’13.8’’S, 48º26’43.8’’W, 14-I-94, M.C. Esposito [collector] ; 2 ♂, same location as holotype, 25-II-94, M.C. Esposito [collector] ; 2 ♀, same location as holotype, 18-III-94, M.C. Esposito [collector] ; 2 ♀, same location as holotype, 25-II-94, M.C. Esposito [collector].

Etymology. The specific epithet is based in the host-plant genus ( Rolandra Rottb. ).

Distribution. Brazil (Pará).

Remarks. The male genitalia of Calycomyza rolandrae sp. nov. is similar to male genitalia of Calycomyza michiganensis Steyskal and Calycomyza chilena Spencer , but C. rolandrae sp. nov. is distinguishable by the mesophallus curving downward apically and the projections of the distiphallus. Only Melanagromyza compositoides Spencer is known to mine leaves of Rolandra ( Benavent-Corai et al. 2005) , being C. rolandrae sp. nov. the first species of Calycomyza mining Rolandra species.

Figures

FIGURES 1 – 5. Male genitalia of Calycomyza rolandrae sp. nov. 1. Male genitalia, ventral view. 2. Aedeagus, lateral view. 3. Aedeagus, ventral view. 4. Epandrium, cercus and surstylus, posterior view. 5. Ejaculatory apodeme, ventral view. Scale = 0.1 mm. Abbreviations: bas = basiphallus, cer = cercus, dis = distiphallus, epa = epandrium, hyp = hypandrium, mes = mesophallus, phapod = phallapodeme, sur = surstylus.

FIGURES 6 – 11. Female genitalia and mines of Calycomyza rolandrae sp. nov. 6. Ninth abdominal sternite, ventral view. 7. Ninth abdominal tergite, ventral view. 8. Spermatheca, lateral view. 9. Eggs guide, ventral view. 10. Ventral receptacle, ventral view. 11. Mines in Rolandra fruticosa. Scale = 0.1 mm., except Fig. 11 = 1 cm. Abbreviations: 9 st = ninth abdominal sternite, 9 tg = ninth abdominal tergite, cer = cercus, nsm = marginal setae of segment 9, ts = tactile sensilla.