Hyperomyzus (Neonasonovia) niger ( Baker (J.M.), 1934 )

Nieto Nafría, Juan M., Hidalgo, Nicolás Pérez, García-Tejero, Sergio, López Ciruelos, Sara I. & Durante, M. Pilar Mier, 2017, Contribution to the knowledge of North-American species Hyperomyzus subgenus Neonasonovia (Aphididae, Aphidinae, Macrosiphini), Zootaxa 4294 (2), pp. 241-255 : 250-251

Hyperomyzus (Neonasonovia) niger ( Baker (J.M.), 1934)

Amphorophora nigra was described by Baker (J.M.) (1934: 216) and was transferred to Neonasonovia , when this taxon had genus rank, by Hille Ris Lambers (1974: 133) and finally to Hyperomyzus (in the subgenus Neonasonovia ) by Eastop & Hille Ris Lambers (1976: 121). Apterous viviparous females were the only morph described; they were extensively redescribed by Hille Ris Lambers (1974). They have smooth swollen part of siphunculi. Its host plant genus is Stevia (Asteraceae) . The species is known from Morelos and Sinaloa ( Mexico) . Studied specimens. Mexico: Durango, Tepehuanes , on Stevia sp., 12-X-1980, 1 al ; Guanajuato, San Miguel de Allende , on unidentified Asteraceae , on Stevia sp. and on Stevia viscida , 7-X-1980, respectively 4 apt, 20 apt & 2 al, and 16 apt & 2 al ; Hidalgo, Pachuca , on Stevia sp., 1-X-1980; all of them Remaudière leg. & det., and Muséum national d’Histoire naturelle collection.

Apterous viviparous females ( Figure 4 A), complementary data. The studied specimens usually have small marginal tubercles on prothorax, on abdominal segments 3 to 5 and sometimes on segment 2, and usually exhibit smoother siphunculi.

Alate viviparous females ( Figure 4 B), description from 4 specimens. Head brown to dark brown, like thorax. Antennae brown to dark brown; segments I and II with scales and other segments imbricated. Most part of legs as dark as antennae (only coxae, trochanters and most proximal part of femora paler). Marginal tubercles on prothorax and abdomen like apterae. Abdominal segments 2 to 6 with marginal sclerites that are paler than the intersegmental and spiracular sclerites, and segments 7 and 8 with individual transverse bands. Siphunculi as dark as femora, with wrinkled peduncle and smooth swollen part to the apex. Genital plate as dark as siphunculi, and darker than anal plate and cauda, which is relatively slender. Quantitative characteristics in table 2.

Comments. The previously known distribution of the species is extended to three other Mexican states: Durango, which is a northern state east of Sinaloa, and Guanajuato and Hidalgo, which are located in central Mexico, in proximity to Morelos.

Figures

FIGURE 4. Hyperomyzus (Neonasonovia) niger; A, apterous viviparous female; B, alate viviparous female. Scale bar: 1 mm.