Discozercon Berlese 1910

Klompen, Hans & Gerdeman, Beverly S., 2023, Genus-level revision of the Heterozerconoidea (Parasitiformes: Mesostigmata), Zootaxa 5322 (1), pp. 1-66 : 19

Discozercon Berlese 1910

Discozercon Berlese 1910a: 374

[type species: Discozercon mirabilis Berlese 1910 , by monotypy].

Discozercon .— Trägårdh 1911: 2; Domrow 1956: 193; Lekveishvili & Klompen 2004: 6; Seeman & Baker 2013: 131.

( Figs 1 , 23–24 , 44 , 53–54 , 78 , 87 ).

Diagnosis: Anterior dorsal setae j1 minute (<5 µm) (28); sclerotized areas near sternal setae st 3 in female separate platelets (40); sclerotized areas near sternal setae st 5 in female separate from genitiventral shield (43); sclerotized areas near sternal setae st 2 in male separate platelets or area not sclerotized (50); sclerotized areas near sternal setae st3 area in male separate platelets or no shield (52); paranal setae inserted anterior to anus (72); setae S 5 in male elongate (75); elongate, equally spaced marginal setae absent (76).

Included species –

Figures

FIGURES 1–3. Chelicera females: 1, Discozerconidae, Discozercon derricki., female (OSAL 052739); 2, Heterozerconidae, Amyzozercon chocoensis, female (OSAL 106741); 3, Al. (Philippinozercon) makilingensis, female (OSAL 053222; blue arrow: brush like structure on inside movable digit). Abbreviations: pd: pilus dentilus. Red arrows: thin, strap-like extensions on the movable digit.

FIGURES 23–26. Gnathosoma, adults: 23, Discozerconidae, Discozercon derricki, female (OSAL 052739); 24, Discozercon derricki, male (OSAL 004889); 25, Heterozerconidae, Amyzozercon chocoensis, female (OSAL 106787); 26, Amyzozercon chocoensis, male (OSAL 106721). Insets gnathotectum and labrum + salivary stylets. Abbreviations: LL, lateral lips.

FIGURES 43–44. Discozerconidae, idiosoma dorsal: 43, Discomegistus sp., male (FMNH); 44, Discozercon derricki. Inset: patterning dorsal cuticle.

FIGURES 53–54. Discozerconidae, Discozercon derricki, idiosoma venter: 53, female (OSAL 052738); 54, male (OSAL 004891).

FIGURES 78–81. Leg I, male: 78, Discozerconidae, Discozercon derricki (OSAL 004889); 79, Heterozerconidae, Ecuazercon cushuimensis, (FMNH-INS 4449621); 80, Amheterozercon amphisbaenae (OSAL 052763); 81, Narceoheterozercon ohioensis, redrawn from Gerdeman & Klompen (2003).

FIGURES 87–92. Leg II, male, antero-dorsal view: 87, Discozerconidae, Discozercon derricki (OSAL 004889); 88, Discomegistus sp., male, basitarsus IV (FMNH; red arrow: mid-dorsal sensillum); 89, Heterozerconidae, Ecuazercon cushuimensis, (FMJK 71–1118); 90, Amheterozercon amphisbaenae (OSAL 052763); 91 Narceoheterozercon ohioensis, redrawn from Gerdeman & Klompen (2003); 92, Afroheterozercon mahsbergi (OSAL 003042, published).