Dicyphus caycumensis, Sanchez & Cassis, 2018

DICYPHUS CAYCUMENSIS SP. NOV.

( FIGS 2, 12 D, 23 A, 32, 34)

L S I D: u r n: l s i d:z o o b a n k. o r g: a c t: 3 5 5 2 7 B6 B - 0785-4713-B2AF-DEF83071D51F

Material examined

Holotype. ♂ ( IMIDA _ ENT 00000200 ), Caycuma in the region of Zonguldak, Turkey; 41.4297ºN 32.0775ºE; ex. Solanum lycopersicum, Sanchez and Cassis coll. ( IMIDA) GoogleMaps . Paratypes 4♂♂, 15♀♀ ( IMIDA _ ENT 00000201 , IMIDA _ ENT 00000248 - IMIDA _ ENT 00000266 ) ( IMIDA) . Same location and host plant as holotype (IMIDA).

Etymology

This species is named after the village of Caycuma in Turkey where the species was collected.

Diagnosis

Dicyphus caycumensis is recognized by the following combination of characters: macropterous males and females ( Fig. 2); body length, males 3.37–3.80 mm, females 3.52–4.12 mm; body with head, pronotum, thoracic pleura and abdomen mostly shiny black, remainder stramineous to translucent pale grey; antennae mostly dark brown to black, AII uniformly so; pronotum short, a little shorter than head length; AII a little longer than posterior width of pronotum in males and subequal in females; left paramere with short and robust apophysis ( Fig. 23A); aedeagus with two large straight endosomal lobal sclerites, subequal in size ( Fig. 12D).

Description

Males. Macropters only known.

Coloration ( Fig. 2): Dorsum mostly dark brown to black, with minor stramineous markings. Head: frons+vertex shiny with a X-shaped black marking, with lateral regions and midline stramineous, sometimes with minor orange highlighting; posterior region of head black; postocular margins broadly black; clypeus, maxillary plate and bucculae black; mandibular plate stramineous; gula mostly black with either a broad yellow stripe or a pair of yellow stripes either side of midline. Antennae: mostly fuscous to black; AI and AII dark brown to black; AIII and AIV entirely dark brown to black. Pronotum: collar black and shiny; calli shiny, dark brown to black, narrowly yellow-brown medially; disk shiny, black with midline white to stramineous. Thoracic pleura and sterna: propleuron black, anterior half of ventral margin whitish; mesobasisternum uniformly shiny black; mesepimeron whitish; metepisternum and metathoracic glands dull black. Mesoscutum: uniformly black. Scutellum : dull black with anterolateral angles white. Hemelytra : translucent, with faint pale-yellow hue, usually with three small dark-brown to fuscous spots, at corial fracture, middle of apical margin of endocorium and tip of cuneus; corium also with minor brown spots, often associated with setae; membrane veins embrowned. Abdomen: venter either uniformly fuscous to black, or mostly black with medial region stramineous.

Structure: Head: interocular distance 1.13–1.42× greater than eye width. Antennae: AI short, 1.24–1.64× longer than interocular distance; AII 1.06–1.19× longer than posterior width of pronotum. Pronotum: disk region 1.28–1.52× the callosite region. Male genitalia: genital opening of pygophore oval, without tergal processes; left paramere with robust and short apophysis, with outer margin of apex spatulate ( Fig. 23A); aedeagus with two well-developed endosomal lobes, each with a straight and distally tapered sclerites; lobal sclerites subequal in size ( Fig. 12D).

Females. Macropters only known. Coloration, vestiture, texture and structure mostly as in males. Body length 3.52–4.12 mm; interocular distance 1.16–1.53× greater than eye width; AI 1.24–1.49× longer than interocular distance; AII 0.86–0.95× longer than the posterior pronotal width. Pronotal disk 1.39–1.88× than the callosite region.