Montistrongylus kaindiensis, Smales, 2015

Durette-Desset, Marie-Claude & Digiani, María Celina, 2023, Revision of the genera of Heligmonellidae (Nematoda, Heligmosomoidea), parasitic in Muridae from New Guinea, Parasite (Paris, France) 30 (63), pp. 1-34 : 13-14

3.3.1.4 Montistrongylus kaindiensis ( Figs. 3L–3O )

3.3.1.4.1 Synlophe (number of worms studied not specified). Sections analyzed herein are within proximal body: male (Fig. 28/3L), female (Fig. 27/3M) and at midbody: male (Fig. 30/3N) and female (Fig. 31/3O); lateral cords not illustrated; ridges numbered in Figure 31/3O.

Within proximal body: Figure 3L (male), judging from drawing, is made at level of esophagus; 13 small ridges irregularly spaced; large gap on right-dorsal quadrant (arrowhead); left ridges oriented from dorsal to ventral side; orientation of other ridges uncertain.

Figure 3M (female): judging from drawing, section made at level of intestine; 18 small ridges irregularly spaced; ridges separated into two groups by two large gaps (arrowheads).

At midbody: in both sections, ridges grouped into three sets alternating with three ridge-free spaces (arrowheads). Position of ridge sets and that of ridge-free spaces differing between both sexes.

Figure 3N (male): ridge set 1 situated on left-ventral quadrant, made up of seven small to medium sized ridges (not numbered) of which two ventral ones more developed and spaced, ridges oriented from ventral to left; ridge set 2 situated on mid-dorsal side, made up of five small ridges similar in size, oriented from dorsal to left (2 ridges) and from dorsal to right (3 ridges); ridge set 3 situated on mid-right side, made up of five minute ridges similar in size and oriented apparently perpendicularly to body surface.

Figure 3O (female): ridge set 1 situated on left side, made up of five minute ridges (2’, 1’ and 1 to 3) regularly spaced and oriented perpendicularly to body surface; ridge set 2 situated on dorsal side, made up of six small ridges, almost similar in size and regularly spaced except ridge 4; ridge set 3 situated on ventral side, made up of seven small ridges, irregularly spaced with ridges 4’ and 5’ larger. Ridges of sets 2 and 3 oriented in same direction: from left to right on dorsal side and from right to left on ventral side.

3.3.1.4.2 Bursa (number of worms studied not specified; illustrated in [ 37]: Figs. 37 and 38). Figure 37: right lobe and dorsal lobe, orientation not specified. Figure 38: left lobe, orientation not specified; left ray 8 not illustrated. From the original written description [ 37]: bursa slightly dissymmetrical with right lobe larger and pattern of type 2-3.

3.3.2 Comments

Figures

Figure 3a. Montistrongylus Smales & Heinrich, 2010. Body sections. A–D’ Montistrongylus ingati Smales & Heinrich, 2010. A–B’ within proximal body. A male, B, B’ female. C–D’ at midbody. C male, D, D’ female. E–H’ Montistrongylus giluwensis Smales, 2011. E, F within proximal body. E male, F female. G–H’ at midbody. G, G’ male, H, H’ female. Sources: A, D redrawn from [45]; E–H redrawn from [33]. B’, D’, G’, H’ modified figures: B’ rotated ca. 75° counterclockwise with respect of the original. D’–H’ reinterpreted orientation of the axis (subfrontal). G’ reversed on its frontal axis then rotated 30° clockwise with respect to the original. H’ rotated ca. 10–20° counterclockwise with respect to the original.