Fig. 4 in Scanning the Hyocephalidae: details of their external morphology with respect to phylogenetic relationships within Eutrichophora (Hemiptera: Heteroptera)*

Fig. 4. Ultrastructure of thoracic spiracles in Hyocephalidae. A–C – Hyocephalus aprugnus Bergroth, 1906, male: A – mesothoracic spiracle (magnifi- cation 400×); B–C – metathoracic spiracle (B – 200×, C – 500×). D – Maevius luridus Brailovsky, 2002: metathoracic spiracle (500×). Scale bars: 0.1 mm (A, C–D), 0.2 mm (B).Published as part of Kment, Petr, Hemala, Vladimír & Malenovský, Igor, 2019, Scanning the Hyocephalidae: details of their external morphology with respect to phylogenetic relationships within Eutrichophora (Hemiptera: Heteroptera)*, pp. 423-441 in Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 59 (2) on page 428, DOI: 10.2478/aemnp-2019-0032, http://zenodo.org/record/534080