Rasnitsynaphis coniuncta, Homan, Agnieszka & Wegierek, Piotr, 2011

Homan, Agnieszka & Wegierek, Piotr, 2011, A new family of aphids (Hemiptera, Sternorrhyncha) from the Lower Cretaceous of Baissa, Transbaikalia, ZooKeys 130, pp. 167-174 : 170-171

Rasnitsynaphis coniuncta sp. n. Fig. 2

Material.

Holotype: PIN 3064/2209; Baissa, Transbaikalia; Zaza Formation, bed 31.

Etymology.

From the Latin term coniunctus for “joined” in reference to the joined rows of rhinaria.

Diagnosis.

Antenna rather long; segment III four times as long as wide; segments IV–VIII of about the same length, rectangular, longer than wide.

Description.

Length of the body about 2.4 (Fig. 2b). Head with epicranial suture. Antennae 0.88 long, about 2/3 of thorax height (Figs 2a, c). Length of antennal segments: II 0.12; III 0.24; IV 0.09; V 0.08; each of VI–VII 0.09; VIII 0.08; IX 0.07 to 0.08. Antennal segment III with 11 rows of rhinaria, with at most 7 rhinaria arranged in one row. Segments IV–VIII at most with 6 rows of rhinaria. Femur of fore legs 0.74 long, tibia 1.06. Middle tibia 1.14 long. Hind femur 0.87 long, tibia 1.34. The second segment of hind leg tarsus 0.24 (Fig. 2d). The distance between bases of cubital veins CuA1 & CuA2 0.13.