Amheterozercon amphisbaenae ( Flechtmann & Johnston 1990 )

Klompen, Hans & Gerdeman, Beverly S., 2023, Genus-level revision of the Heterozerconoidea (Parasitiformes: Mesostigmata), Zootaxa 5322 (1), pp. 1-66 : 27

Amheterozercon amphisbaenae ( Flechtmann & Johnston 1990)

Zeterohercon amphisbaenae Flechtmann & Johnston 1990: 145 .

Amheterozercon amphisbaenae .— Lindquist et al. 2009b: 137.

( Figs 8–9 , 29–30 , 59–60 , 80 , 90 ).

Type depository. Holotype deposited at OSAL, accession no. OSAL 106933 .

Material examined. Brazil: S„o Paulo, S„o Jose do Rio Preto, 20.8083 S 49.3811 W, 29–Mar-1990, Rizzo, A., ex Amphisbaena alba, AL 007865, 1 female, OSAL 052750 ; same collection data , 1 female OSAL 052751 , 1 female OSAL 052752 , 1 female F OSAL 052753 , 1 female OSAL 052754 , 1 male OSAL 052755 , 1 male OSAL 052756 , 1 male OSAL 052757 , 1 male OSAL 052758 , 1 male OSAL 052759 , 1 male OSAL 052760 , 1 male OSAL 052761 , 1 male OSAL 052763 , 1 male OSAL 106933

Remarks. Based on females and males ex Amphisbaena alba (Linnaeus) (Amphisbaenidae) , from S„o Paulo state, Brazil ( Flechtmann & Johnston 1990).

Resolution of relationships among the remaining five genera could not be resolved with any confidence, effectively leaving a polytomy of Narceoheterozercon , Afroheterozercon , Maracazercon , Heterozercon , and Allozercon . The grouping is characterized by the following state changes: anterior margin gnathotectum not serrate (16, reversed in some Heterozercon ); posterior extension of lateral lips long, extending distinctly past hyp 2 (20, exception Heterozercon ); sternal lyrifissures iv 3 in male present (54.0, reversed in a few Allozercon ); insertion paranal setae (pa) posterior to the anus (72, exception some Heterozercon ); femora II seta pv in male spine (108, reversed in Narceoheterozercon ); trochanters III seta al in male distinct spine (112, reversed in Narceoheterozercon ex Auburn C, Afroheterozercon pachybolus , and a few Heterozercon ).

In general, the genera in this group can be distinguished by a set of characters involving the shape of setae, including the marginal opisthosomal setae (77, 78), the lateral and ventral setae on femora II of the male (105–107), ventral seta pv on genua and tibiae II of the male (109–110), and tarsi II seta pl1 (111).

Figures

FIGURES 8–11. Heterozerconidae, chelicera males, photograph (top) and composite drawing (bottom): 8–9, Amheterozercon amphisbaenae (OSAL 052760); 10–11, Narceoheterozercon ohioensis (OSAL 001221).

FIGURES 27–30. Heterozerconidae, gnathosoma, adults: 27, Ecuazercon cushuimensis, female (FMJK 71–1118); 28, Ecuazercon cushuimensis, male (FMJK 71–1114); 29, Amheterozercon amphisbaenae, female (OSAL 052751; red arrow: sclerotized axial extension of palp trochanter); 30, Amheterozercon amphisbaenae, male (OSAL 052761). Inset: gnathotectum and labrum + salivary stylets. Abbreviations: LL, lateral lips.

FIGURES 59–60. Heterozerconidae, Amheterozercon amphisbaenae, idiosoma venter: 59, female (OSAL 052751); 60, male (OSAL 052761).

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).