Cylapus stellatus
Creators: name: Wolski, Andrzej
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Miridae
Cylapus
Cylapus stellatus

description: Cylapus stellatus (Distant, 1883)   
(Figs 48, 49, 62, 110–114)  
 Valdasus stellatus Distant, 1883: 243 (new species).   
 Valdasus stellatus: ATKINSON (1890): 49 (list).   
 Cylapus stellatus POPPIUS (1909): 43 (list, new combination); BERGROTH (1920):71 (list); CARVALHO & FONTES (1968): 275 (list); SCHUH (1995): 24 (catalog); GORCZYCA (2006b): 16 (catalog); SCHUH (2013) (online catalog).   
 Cylapus (Cylapus) stellatus: CARVALHO (1957): 31 (catalog).   
 Type material examined. GUATEMALA: VERA CRUZ: LECTOTYPE (designated by CARVALHO & DOLLING 1976): ♀, “Cubilguitz, Vera Paz, Champion; B.C.A., Hem. I Cylapus stellatus; BMNH(E) 1705767; Lectotype [round label with violet border]” (BMNH). PARALECTOTYPE: J, “San Juan, Vera Paz, Champion; Distant Coll. 1911–383.; Paralectotype [round label with blue border]” (BMNH).   
 Diagnosis. Recognized by the following set of features: antennal segment II in both sexes thinner than segment I (Fig. 49); pronotum with two thin yellow stripes, each bordering lateral margin and a thin, yellow, longitudinal stripe medially (Figs 48, 49); scutellum with three yellow patches: two situated basolaterally and one situated apically (Figs 48, 49); corium with four yellow patches: one basally, two medially and one apically (Figs 48, 49); sclerite es1 with both margins strongly sinuate, apical one fifth broadened and serrate; es2 broadened toward apex with apical one fourth round and serrate; es3 with basal two thirds gradually becoming thicker toward apex, its apical one third strongly broadened, nearly triangular; es4 thin, nearly cylindrical, weakly tapering apically (Fig. 110); left paramere with sensory lobe weakly developed (Figs 111, 112).   
 Most similar to C. marginicollis in sharing the yellow swelling along lateral margin of pronotum (Figs 45, 48, 49). It can, however, be distinguished by the antennal segment II thinner than segment I (Fig. 49) and the male genitalia (Figs 110–114). With C. striatus and C. tenuicornis it shares three patches on scutellum and four patches on corium (Figs 48–53) but can be easily distinguished by the male genitalia.   
  Redescription. Female. Coloration  (Figs 48, 49, 62). Dorsum dark brown with yellow areas. Head dark brown with broad, yellow areas posterolaterally and medially; frons, maxillary and mandibular plates, clypeus, and buccula dark brown, weakly tinged with yellow; gula mostly yellow; antennal segment I blackish; segment II narrowly blackish basally, rest of basal half dirty yellowish, apical half (except for yellow extreme apex) dark brown; segments III and IV brown; labium dark brown.  Thorax.  Pronotum dark brown with three yellow stripes: two, occupying basal three fourths, situated along posterior margins and one, originating from posterior margin of pronotal calli and reaching posterior margin, situated medially. Mesoscutum and scutellum dark brown; scutellum with three yellow patches: two situated posterolaterally and one apically. Thoracic pleura. Proepisternum and anterior one third of proepimeron dark brown, posterior two thirds dark red; remaining pleura blackish; metathoracic scent gland evaporative area fuscous, broadly dark with yellow. Hemelytron dark brown; corium with four yellow patches: one situated on R+M vein basally, two situated medially, and one apicolaterally; clavus with two small yellow patches: basally and apically; cuneus dark brown, apical angle dark yellow, inner angle yellow; membrane fuscous. Legs. Coxae, pro- and mesofemora (hind leg lacking) blackish; mesofemur with yellow patch medially; protibia blackish with yellow annulation medially; mesotibia dark yellow at basal half with yellow annulation medially and blackish apical half; pro- and mesofemora brown. Abdomen blackish, weakly tinged basally.   
  Male.  Similar to female in coloration, structure, texture, and vestiture. Male genitalia (Figs 110–114). Aedeagus (Fig. 110). Endosoma with four endosomal sclerites (es1–es4): es1 with both margins strongly sinuate, apical one fifth broadened and serrate; es2 broadened toward apex with apical one fourth round and serrate; es3 with basal two thirds gradually becoming thicker toward apex, its apical one third strongly broadened, nearly triangular; es4 thin, nearly cylindrical, weakly tapering apically. Left paramere (Figs 111–113). Apical process in dorsal view with proximal two thirds with dorsal margin broadly concave medially, ventral margin straight, apex tapering; paramere body in dorsal view weakly arcuate, in lateral view strongly arcuate; sensory lobe weakly developed. Right paramere (Fig. 114). Apical process moderately developed, sharply pointed; paramere body relatively thin, outer margin nearly straight, inner margin weakly sinuate, sensory lobe weakly developed.   
 Measurements (in mm).J / ♀. Body. Length: 5.90 / 6.50, width 2.10 / 2.60. Head. Length: 0.52 / 0.55, width: 1.20 / 1.25, interocular distance: 0.52 / 0.45. Antenna. Length of segment I: 1.40 / 1.00, II: 2.75 / 2.50, III 3.70 / missing, IV 3.15 / missing. Labium. Length of segment I: 0.67 / 0.65, II–IV (obscured by glue and immeasurable in both specimens). Pronotum. Length: 1.00 / 1.10, width of anterior margin: 1.15 / 1.30, length of lateral margin: 0.90 / 1.10, width of posterior margin: 2.00 / 2.35.   
 Biology. Collected on fallen trees covered with black fungi (DISTANT 1883).   
 Distribution. Guatemala (Vera Paz) (DISTANT 1883).
description: Published as part of Wolski, Andrzej, 2017, Taxonomic review of the plant bug genera Amapacylapus and Cylapus with descriptions of two new species and a key to the genera of Cylapini (Hemiptera: Heteroptera: Miridae), pp. 399-455 in Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) (Acta. Ent. Mus. Natl. Pragae) 57 (2) on pages 438-440, DOI: 10.1515/aemnp-2017-0084, http://zenodo.org/record/5315312