A new species of Xerobion Nevsky, 1928 (Hemiptera: Aphidoidea, Aphididae) from Kazakhstan, with a key to apterous viviparous females of the genus

R.Kh Kadyrbekov

doi:10.25221/fee.431.2

Abstract

A new species Xerobion ulytavicum Kadyrbekov sp. n. from host plant Galatella biflora is described from Karaganda region (Kazakhstan). New species differs from the most similar X. caspicae Bozhko, 1963 by the shape of the ultimate rostral segment, the ratio of the length of the siphunculi and the cauda (0.4–0.75 vs 0.7–1.0, respectively), the proportion of frontal setae to the diameter of the third antennal segment at the base (1.0–1.2 vs 0.7–1.0) and a hair on the trochanter of hind legs to the diameter of the trochanter-femoral suture (0.5–0.6 vs 0.25), as well as a host plant belonging to another genus. A key to apterous viviparous females of all known species of the genus Xerobion is given.

Highlights

APTEROUS VIVIPAROUS FEMALES OF THE GENUSA new species Xerobion ulytavicum Kadyrbekov sp
The aphids genus Xerobion consists of 21 species distributed in the South Palaearctic region (Blackman & Eastop, 2006; Favret, 2019)
The body is dark green with weak gray bloom, head, upper half of the 3rd, 4–6th antennal segments, clypeus, coxae, trochanter, femur except the base, base and top of the legs, tarsi, subgenital plate – are light brown, siphunculi are black, the cauda is green

Summary

APTEROUS VIVIPAROUS FEMALES OF THE GENUS

A new species Xerobion ulytavicum Kadyrbekov sp. New species differs from the most similar X. caspicae Bozhko, 1963 by the shape of the ultimate rostral segment, the ratio of the length of the siphunculi and the cauda (0.4–0.75 vs 0.7–1.0, respectively), the proportion of frontal setae to the diameter of the third antennal segment at the base (1.0–1.2 vs 0.7–1.0) and a hair on the trochanter of hind legs to the diameter of the trochanter-femoral suture (0.5–0.6 vs 0.25), as well as a host plant belonging to another genus. Кадырбеков Новый вид рода Xerobion Nevsky, 1928 (Hemiptera: Aphidoidea, Aphididae) из Казахстана с определительной таблицей видов рода по бескрылым живородящим самкам // Дальневосточный энтомолог. Из Карагандинской области Казахстана описан новый для науки вид Xerobion ulytavicum Kadyrbekov, sp. Составлена определительная таблица видов рода Xerobion по бескрылым живородящим самкам

INTRODUCTION

MATERIAL AND METHODS