Fig. 9 | Scientific Reports

Fig. 9

From: Integrative approach to the systematics of the endemic Svalbard aphid specis Macrosiphum calvulum (Hemiptera, Aphididae) using molecular morphological and reproductive system analysis

Fig. 9

SEM images of general morphology of Macrosiphum calvulum male detected on Svalbard archipelago. (A) antennal segments I and II with visible campaniform sensillum (arrow). (B) antennal segment III. (C) antennal segment IV. (D) antennal segment V. (E) antennal segment VI. (F) type II trichoid sensilla on the tip of antennal segment VI. (G) antennal segment III with rounded placoid sensilla, lying in cuticle cavities with gentle edge. (H) apical part of antennal segment V with two big multiporous placoid sensilla (primary rhinaria) surrounded by sclerotic ring with long, thick single or forked projections (arrow) and adjoining one small rounded placoid sensillum (secondary rhinarium). (I) base of antennal segment VI with big (yellow), small (green) multiporous placoid sensilla and mushroom-shaped type I (pink) and type II (blue) sunken coeloconic sensilla.

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